150 results on '"Keller DI"'
Search Results
2. Elevated high-sensitivity troponin T levels are associated with adverse cardiac remodelling and myocardial fibrosis in hypertrophic cardiomyopathy
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Hasler, S, primary, Manka, R, additional, Greutmann, M, additional, Gämperli, O, additional, Schmied, C, additional, Tanner, FC, additional, Biaggi, P, additional, Lüscher, TF, additional, Keller, DI, additional, and Gruner, C, additional
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- 2016
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3. Physical activity behaviour in patients with metabolic syndrome
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Murer, M, primary, Schmied, C, additional, Battegay, E, additional, and Keller, DI, additional
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- 2012
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4. De novo heterozygous desmoplakin mutations leading to Naxos-Carvajal disease
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Keller, DI, primary, Stepowski, D, additional, Balmer, C, additional, Simon, F, additional, Guenthard, J, additional, Bauer, F, additional, Itin, P, additional, David, N, additional, Drouin-Garraud, V, additional, and Fressart, V, additional
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- 2012
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5. Cardiac pre-competiton screening in Swiss athletes - Current situation in competitive athletes and short-time assessment of an exemplary local screening program
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Schmied, C, primary, Notz, S, additional, Cribari, M, additional, Gähwiler, R, additional, Keller, DI, additional, and Lüscher, TF, additional
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- 2012
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6. Rolling stones
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Seiler, RC, primary, Blume, I, additional, Brunner, A, additional, and Keller, DI, additional
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- 2011
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7. Emergency physician intershift handover - can a dINAMO checklist speed it up and improve quality?
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Rüdiger-Stürchler, M, primary, Keller, DI, additional, and Bingisser, R, additional
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- 2010
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8. Synkope einer jungen Sportlerin nicht immer harmlos
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Stephan, FP, primary, Koller, MT, additional, Conen, A, additional, Sticherling, C, additional, Bingisser, R, additional, Nickel, C, additional, and Keller, DI, additional
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- 2010
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9. Wer braucht einen implantierbaren Cardioverter-Defibrillator (ICD)?
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Blank, R, primary, Schär, B, additional, Keller, DI, additional, Sticherling, C, additional, and Osswald, S, additional
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- 2008
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10. Qui a besoin dun cardioverter-défibrillateur-implantable (ICD)?
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Blank, R, primary, Schär, B, additional, Keller, DI, additional, Sticherling, C, additional, and Osswald, S, additional
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- 2008
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11. FIFA Women's World Cup 2011: pre-competition medical assessment of female referees and assistant referees.
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Keller DI, Bizzini M, Feddermann N, Junge A, Dvorak J, Keller, Dagmar I, Bizzini, Mario, Feddermann, Nina, Junge, Astrid, and Dvorak, Jiri
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Background: Precompetition screening was implemented for male referees during the 2010 Fédération Internationale de Football Association (FIFA) Word Cup. In contrast, female football referees have been neglected in this respect although they experience similar physical work loads compared to male referees.Methods: The standardised football-specific pre-competition medical assessment (PCMA) was performed in 51 referees and assistant referees selected for the 2011 FIFA Women's World Cup.Results: Family history for sudden cardiac death (SCD) was positive in four referees (7.8%), but cardiac examinations did not reveal any pathological findings. Training-unrelated ECG changes were identified in three referees (5.9%), all without correlates in echocardiography or clinical examination. Most common echocardiography findings (66.6%, n=34) were asymptomatic tricuspid and mitral regurgitations.Conclusions: During the present screening, no elite female referee was identified being at risk for SCD, and no referee had to be excluded from participating in the 2011 FIFA Women's World Cup. [ABSTRACT FROM AUTHOR]- Published
- 2013
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12. External validation of the 0/1h-algorithm and derivation of a 0/2h-algorithm using a new point-of-care Hs-cTnI assay.
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Koechlin L, Boeddinghaus J, Lopez-Ayala P, Wildi K, Nestelberger T, Wussler D, Guzman Tacla CA, Holder T, Muench-Gerber T, Glaeser J, Sanchez AY, Miró Ò, Martin-Sanchez FJ, Kawecki D, Buergler F, Buser A, Huré G, Giménez MR, Keller DI, Christ M, and Mueller C
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- Humans, Female, Middle Aged, Point-of-Care Systems, Prospective Studies, Biomarkers, Troponin I, Algorithms, Troponin T, Non-ST Elevated Myocardial Infarction diagnosis, Myocardial Infarction diagnosis, ST Elevation Myocardial Infarction
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Background: The high-sensitivity cardiac troponin (hs-cTn) I point-of-care (POC) hs-cTnI-PATHFAST assay has recently become clinically available., Methods: We aimed to externally validate the hs-cTnI-PATHFAST 0/1h-algorithm recently developed for the early diagnosis of non-ST-segment-elevation myocardial infarction (NSTEMI) and derive and validate a 0/2-algorithm in patients presenting to the emergency department with acute chest discomfort included in a multicenter diagnostic study. Two independent cardiologists centrally adjudicated the final diagnoses using all the clinical and study-specific information available including serial measurements of hs-cTnI-Architect., Results: Among 1,532 patients (median age 60 years, 33% [n = 501] women), NSTEMI was the final diagnosis in 13%. External validation of the hs-cTnI-PATHFAST 0/1h-algorithm showed very high negative predictive value (NPV; 100% [95%CI, 99.5%-100%]) and sensitivity 100% (95%CI, 98.2%-100%) for rule-out of NSTEMI. Positive predictive value (PPV) and specificity for rule-in of NSTEMI were high (74.9% [95%CI, 68.3%-80.5%] and 96.4% [95%CI, 95.2%-97.3%], respectively). Among 1,207 patients (median age 61 years, 32% [n = 391] women) available for the derivation (n = 848) and validation (n = 359) of the hs-cTnI-PATHFAST 0/2h-algorithm, a 0h-concentration <3 ng/L or a 0h-concentration <4 ng/L with a 2h-delta <4ng/L ruled-out NSTEMI in 52% of patients with a NPV of 100% (95%CI, 98-100) and sensitivity of 100% (95%CI, 92.9%-100%) in the validation cohort. A 0h-concentration ≥90ng/L or a 2h-delta ≥ 55ng/L ruled-in 38 patients (11%): PPV 81.6% (95%CI, 66.6-90.8), specificity 97.7% (95%CI, 95.4-98.9%)., Conclusions: The POC hs-cTnI-PATHFAST assay allows rapid and effective rule-out and rule-in of NSTEMI using both a 0/1h- and a 0/2h-algorithm with high NPV/sensitivity for rule-out and high PPV/specificity for rule-in., Clinical Trial Registration: NCT00470587., (Copyright © 2023 The Author(s). Published by Elsevier Inc. All rights reserved.)
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- 2024
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13. Additional Value From Free-Text Diagnoses in Electronic Health Records: Hybrid Dictionary and Machine Learning Classification Study.
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Mehra T, Wekhof T, and Keller DI
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Background: Physicians are hesitant to forgo the opportunity of entering unstructured clinical notes for structured data entry in electronic health records. Does free text increase informational value in comparison with structured data?, Objective: This study aims to compare information from unstructured text-based chief complaints harvested and processed by a natural language processing (NLP) algorithm with clinician-entered structured diagnoses in terms of their potential utility for automated improvement of patient workflows., Methods: Electronic health records of 293,298 patient visits at the emergency department of a Swiss university hospital from January 2014 to October 2021 were analyzed. Using emergency department overcrowding as a case in point, we compared supervised NLP-based keyword dictionaries of symptom clusters from unstructured clinical notes and clinician-entered chief complaints from a structured drop-down menu with the following 2 outcomes: hospitalization and high Emergency Severity Index (ESI) score., Results: Of 12 symptom clusters, the NLP cluster was substantial in predicting hospitalization in 11 (92%) clusters; 8 (67%) clusters remained significant even after controlling for the cluster of clinician-determined chief complaints in the model. All 12 NLP symptom clusters were significant in predicting a low ESI score, of which 9 (75%) remained significant when controlling for clinician-determined chief complaints. The correlation between NLP clusters and chief complaints was low (r=-0.04 to 0.6), indicating complementarity of information., Conclusions: The NLP-derived features and clinicians' knowledge were complementary in explaining patient outcome heterogeneity. They can provide an efficient approach to patient flow management, for example, in an emergency medicine setting. We further demonstrated the feasibility of creating extensive and precise keyword dictionaries with NLP by medical experts without requiring programming knowledge. Using the dictionary, we could classify short and unstructured clinical texts into diagnostic categories defined by the clinician., (©Tarun Mehra, Tobias Wekhof, Dagmar Iris Keller. Originally published in JMIR Medical Informatics (https://medinform.jmir.org), 17.01.2024.)
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- 2024
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14. Validation of the ICEBERG emergency room screening tool for early identification of older patients with geriatric consultation needs.
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Bischoff-Ferrari HA, Gagesch M, Tsai DH, Richter C, Lanz P, Sidler P, Can U, Keller DI, Minder M, von Rickenbach B, Yildirim-Aman A, Geiling K, and Freystaetter G
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Background: The growing number of older and oldest-old patients often present in the emergency room (ER) with undiagnosed geriatric syndromes posing them at high risk for complications in acute care., Objective: To develop and validate an ER screening tool (ICEBERG) to capture 9 geriatric domains of risk in older patients., Design Setting and Participants: For construct validity we performed a chart-based study in 129 ER patients age 70 years and older admitted to acute geriatric care (pilot 1). For criterion validity we performed a prospective study in 288 ER patients age 70 years and older admitted to acute care (pilot 2)., Exposure: In both validation steps, the exposure was ICEBERG test performance below and above the median score (10, range 0-30)., Outcome Measures and Analysis: In pilot 1, we compared the exposure with results of nine tests of the Comprehensive Geriatric Assessment (CGA). In pilot 2, we compared the exposure assessed in the ER to following length of hospital stay (LOS), one-on-one nursing care needs, in-hospital mortality, 30-day re-admission rate, and discharge to a nursing home., Main Results: Mean age was 82.9 years (SD 6.7; n = 129) in pilot 1, and 81.5 years (SD 7.0; n = 288) in pilot 2. In pilot 1, scoring ≥10 was associated with significantly worse performance in 8 of 9 of the individual CGA tests. In pilot 2, scoring ≥10 resulted in longer average LOS (median 7 days, IQR 4, 11 vs. 6 days, IQR 3, 8) and higher nursing care needs (median 1,838 min, IQR 901, 4,267 vs. median 1,393 min, IQR 743, 2,390). Scoring ≥10 also increased the odds of one-on-one nursing care 2.9-fold (OR 2.86, 95%CI 1.17-6.98), and the odds of discharge to a nursing home 3.7-fold (OR 3.70, 95%CI 1.74-7.85). Further, scoring ≥10 was associated with higher in-hospital mortality and re-hospitalization rates, however not reaching statistical significance. Average time to complete the ICEBERG tool was 4.3 min (SD 1.3)., Conclusion: Our validation studies support construct validity of the ICEBERG tool with the CGA, and criterion validity with several clinical indicators in acute care., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Bischoff-Ferrari, Gagesch, Tsai, Richter, Lanz, Sidler, Can, Keller, Minder, von Rickenbach, Yildirim-Aman, Geiling and Freystaetter.)
- Published
- 2023
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15. Combining glucose and high-sensitivity cardiac troponin in the early diagnosis of acute myocardial infarction.
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Yufera-Sanchez A, Lopez-Ayala P, Nestelberger T, Wildi K, Boeddinghaus J, Koechlin L, Rubini Gimenez M, Sakiz H, Bima P, Miro O, Martín-Sánchez FJ, Christ M, Keller DI, Gualandro DM, Kawecki D, Rentsch K, Buser A, and Mueller C
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- Humans, Early Diagnosis, Glucose, Troponin, Non-ST Elevated Myocardial Infarction, Myocardial Infarction
- Abstract
Glucose is a universally available inexpensive biomarker, which is increased as part of the physiological stress response to acute myocardial infarction (AMI) and may therefore help in its early diagnosis. To test this hypothesis, glucose, high-sensitivity cardiac troponin (hs-cTn) T, and hs-cTnI were measured in consecutive patients presenting with acute chest discomfort to the emergency department (ED) and enrolled in a large international diagnostic study (NCT00470587). Two independent cardiologists centrally adjudicated the final diagnosis using all clinical data, including serial hs-cTnT measurements, cardiac imaging and clinical follow-up. The primary diagnostic endpoint was index non-ST-segment elevation MI (NSTEMI). Prognostic endpoints were all-cause death, and cardiovascular (CV) death or future AMI, all within 730-days. Among 5639 eligible patients, NSTEMI was the adjudicated final diagnosis in 1051 (18.6%) patients. Diagnostic accuracy quantified using the area under the receiver-operating characteristics curve (AUC) for the combination of glucose with hs-cTnT and glucose with hs-cTnI was very high, but not higher versus that of hs-cTn alone (glucose/hs-cTnT 0.930 [95% CI 0.922-0.937] versus hs-cTnT 0.929 [95% CI 0.922-0.937]; glucose/hs-cTnI 0.944 [95% CI 0.937-0.951] versus hs-cTnI 0.944 [95% CI 0.937-0.951]). In early-presenters, a dual-marker strategy (glucose < 7 mmol/L and hs-cTnT < 5/hs-cTnI < 4 ng/L) provided very high and comparable sensitivity to slightly lower hs-cTn concentrations (cTnT/I < 4/3 ng/L) alone, and possibly even higher efficacy. Glucose was an independent predictor of 730-days endpoints. Our results showed that a dual marker strategy of glucose and hs-cTn did not increase the diagnostic accuracy when used continuously. However, a cutoff approach combining glucose and hs-cTn may provide diagnostic utility for patients presenting ≤ 3 h after onset of symptoms, also providing important prognostic information., (© 2023. Springer Nature Limited.)
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- 2023
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16. Hyperacute T Wave in the Early Diagnosis of Acute Myocardial Infarction.
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Koechlin L, Strebel I, Zimmermann T, Nestelberger T, Walter J, Lopez-Ayala P, Boeddinghaus J, Shrestha S, Arslani K, Stefanelli S, Reuthebuch B, Wussler D, Ratmann PD, Christ M, Badertscher P, Wildi K, Giménez MR, Gualandro DM, Miró Ò, Fuenzalida C, Martin-Sanchez FJ, Kawecki D, Bürgler F, Keller DI, Abächerli R, Reuthebuch O, Eckstein FS, Twerenbold R, Reichlin T, and Mueller C
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- Humans, Prospective Studies, Sensitivity and Specificity, Arrhythmias, Cardiac, Electrocardiography, Early Diagnosis, Myocardial Infarction diagnosis
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Study Objective: The diagnostic performance of T-wave amplitudes for the detection of myocardial infarction is largely unknown. We aimed to address this knowledge gap., Methods: T-wave amplitudes were automatically measured in 12-lead ECGs of patients presenting with acute chest discomfort to the emergency department within a prospective diagnostic multicenter study. The final diagnosis was centrally adjudicated by 2 independent cardiologists. Patients with left ventricular hypertrophy, complete left bundle branch block, or paced ventricular depolarization were excluded. The performance for lead-specific 95th-percentile thresholds were reported as likelihood ratios (lr), specificity, and sensitivity., Results: Myocardial infarction was the final diagnosis in 445 (18%) of 2457 patients. In most leads, T-wave amplitudes tended to be greater in patients without myocardial infarction than those with myocardial infarction, and T-wave amplitude exceeding the 95th percentile had positive and negative lr close to 1 or with confidence intervals (CIs) crossing 1. The exceptions were leads III, aVR, and V1, which had positive lrs of 3.8 (95% CI, 2.7 to 5.3), 4.3 (95% CI, 3.1 to 6.0) and 2.0 (95% CI, 1.4 to 2.9), respectively. These leads normally have inverted T waves, so T-wave amplitude exceeding the 95th percentile reflects upright rather than increased-amplitude hyperacute T waves., Conclusion: Hyperacute T waves, when defined as increased T-wave amplitude exceeding the 95th percentile, did not provide useful information in diagnosing myocardial infarction in this sample., (Copyright © 2022 American College of Emergency Physicians. Published by Elsevier Inc. All rights reserved.)
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- 2023
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17. Enoxaparin for outpatients with COVID-19: 90-day results from the randomised, open-label, parallel-group, multinational, phase III OVID trial.
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Voci D, Götschi A, Held U, Bingisser R, Colucci G, Duerschmied D, Fumagalli RM, Gerber B, Hasse B, Keller DI, Konstantinides SV, Mach F, Rampini SK, Righini M, Robert-Ebadi H, Rosemann T, Roth-Zetzsche S, Sebastian T, Simon NR, Spirk D, Stortecky S, Vaisnora L, Kucher N, and Barco S
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- Adult, Humans, Female, Middle Aged, Male, Enoxaparin therapeutic use, SARS-CoV-2, Outpatients, Anticoagulants therapeutic use, Treatment Outcome, COVID-19, Cardiovascular Diseases drug therapy
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Introduction: The benefits of early thromboprophylaxis in symptomatic COVID-19 outpatients remain unclear. We present the 90-day results from the randomised, open-label, parallel-group, investigator-initiated, multinational OVID phase III trial., Methods: Outpatients aged 50 years or older with acute symptomatic COVID-19 were randomised to receive enoxaparin 40 mg for 14 days once daily vs. standard of care (no thromboprophylaxis). The primary outcome was the composite of untoward hospitalisation and all-cause death within 30 days from randomisation. Secondary outcomes included arterial and venous major cardiovascular events, as well as the primary outcome within 90 days from randomisation. The study was prematurely terminated based on statistical criteria after the predefined interim analysis of 30-day data, which has been previously published. In the present analysis, we present the final, 90-day data from OVID and we additionally investigate the impact of thromboprophylaxis on the resolution of symptoms., Results: Of the 472 patients included in the intention-to-treat population, 234 were randomised to receive enoxaparin and 238 no thromboprophylaxis. The median age was 57 (Q1-Q3: 53-62) years and 217 (46 %) were women. The 90-day primary outcome occurred in 11 (4.7 %) patients of the enoxaparin arm and in 11 (4.6 %) controls (adjusted relative risk 1.00; 95 % CI: 0.44-2.25): 3 events per group occurred after day 30. The 90-day incidence of cardiovascular events was 0.9 % in the enoxaparin arm vs. 1.7 % in controls (relative risk 0.51; 95 % CI: 0.09-2.75). Individual symptoms improved progressively within 90 days with no difference between groups. At 90 days, 42 (17.9 %) patients in the enoxaparin arm and 40 (16.8 %) controls had persistent respiratory symptoms., Conclusions: In adult community patients with COVID-19, early thromboprophylaxis with enoxaparin did not improve the course of COVID-19 neither in terms of hospitalisation and death nor considering COVID-19-related symptoms., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Bernhard Gerber reports non-financial support and funding for an accredited continuing medical education programme from Axonlab, and Thermo Fisher Scientific; personal fees and funding for an accredited continuing medical education programme from Alnylam, Pfizer, and Sanofi; funding for an accredited continuing medical education programme from Bayer, Bristol Myers Squibb, Daiichi-Sankyo, Takeda, Octapharma, SOBI, Janssen, Novo Nordisk, Mitsubishi Pfizer, Tanabe Pharma, outside the submitted work. Stavros V. Konstantinides reports grants or contracts from Bayer AG; consulting fees from Bayer, Daiichi Sankyo, and Boston Scientific; and payment or honoraria from Bayer, INARI Medical, MSD, Pfizer, and Bristol-Myers Squibb. Stefan Stortecky reports research grants from Edwards Lifesciences to the institution, research grants from Medtronic to the institution, research grants from Boston Scientific to the institution, research grants from Abbott to the institution, personal fees from Boston Scientific, from Teleflex, from BTG –Boston Scientific outside the submitted work. Helia Robert-Ebadi reports speaker honoraria from Daichi-Sankyo, and Bayer. David Spirk reports employment by Sanofi-Aventis Switzerland. Daniel Duerschmied reports research support from German Research Foundation, CytoSorbents, Haemonetic; consulting and speaker's fees from Bayer Healthcare, Daiichi Sankyo, LEO Pharma, AstraZeneca, Boston Scientific, and BMS–Pfizer. Nils Kucher reports institutional research grants from Concept Medical, Bard, Bentley, Boston Scientific, INARI, Sanofi, and Bayer; and personal fees from Concept Medical, Bayer, Boston Scientific, and INARI. Stefano Barco reports institutional research grants from Concept Medical, Bard, Bentley, Boston Scientific, INARI, Sanofi, and Bayer; and personal fees from Concept Medical, Bayer, Boston Scientific, and INARI. All other authors do not report any conflicts of interest., (Copyright © 2022 The Authors. Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2023
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18. Performance of the American Heart Association/American College of Cardiology/Heart Rhythm Society versus European Society of Cardiology guideline criteria for hospital admission of patients with syncope.
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du Fay de Lavallaz J, Zimmermann T, Badertscher P, Lopez-Ayala P, Nestelberger T, Miró Ò, Salgado E, Zaytseva X, Gafner MS, Christ M, Cullen L, Than M, Martin-Sanchez FJ, Di Somma S, Peacock WF, Keller DI, Costabel JP, Sigal A, Puelacher C, Wussler D, Koechlin L, Strebel I, Schuler S, Manka R, Bilici M, Lohrmann J, Kühne M, Breidthardt T, Clark CL, Probst M, Gibson TA, Weiss RE, Sun BC, and Mueller C
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- Aged, Hospitalization, Hospitals, Humans, Syncope diagnosis, Syncope therapy, United States epidemiology, American Heart Association, Cardiology
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Background: Current American College of Cardiology/American Heart Association/Heart Rhythm Society (ACC/AHA/HRS) and European Society of Cardiology (ESC) guidelines recommend different strategies to avoid low-yield admissions in patients with syncope., Objective: The purpose of this study was to directly compare the safety and efficacy of applying admission criteria of both guidelines to patients presenting with syncope to the emergency department in 2 multicenter studies., Methods: The international BASEL IX (BAsel Syncope EvaLuation) study (median age 71 years) and the U.S. SRS (Improving Syncope Risk Stratification in Older Adults) study (median age 72 years) were investigated. Primary endpoints were sensitivity/specificity for the adjudicated diagnosis of cardiac syncope (BASEL IX only) and 30-day major adverse cardiovascular events (30d-MACE)., Results: Among 2560 patients in the BASEL IX and 2085 in SRS studies, ACC/AHA/HRS and ESC criteria recommended admission for a comparable number of patients in BASEL IX (27% vs 28%), but ACC/AHA/HRS criteria less often in SRS (19% vs 32%; P <.01). Recommendations were discordant in ∼25% of patients. In BASEL IX, sensitivity for cardiac syncope and 30d-MACE among patients without admission criteria was comparable for ACC/AHA/HRS and ESC criteria (64% vs 65%, P = .86; and 67% vs 71%, P = .15, respectively). In SRS, sensitivity for 30d-MACE was lower with ACC/AHA/HRS (54%) vs ESC criteria (88%; P <.001). Similarly, specificity for cardiac syncope and 30d-MACE in BASEL IX was comparable for both guidelines, but in SRS the ACC/AHA/HRS guidelines showed a higher specificity for 30d-MACE than the ESC guidelines., Conclusion: ACC/AHA/HRS and ESC guidelines showed disagreement regarding admission for 1 in 4 patients and had only modest sensitivity, all indicating possible opportunities for improvements., (Copyright © 2022 Heart Rhythm Society. Published by Elsevier Inc. All rights reserved.)
- Published
- 2022
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19. Destructive osteomyelitis involving Parvimonas micra and Campylobacter rectus .
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Aranowicz A, van den Brandt SL, Slankamenac K, and Keller DI
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- Abscess drug therapy, Anti-Bacterial Agents therapeutic use, Campylobacter rectus, Female, Firmicutes, Humans, Peptostreptococcus, Chronic Periodontitis drug therapy, Osteomyelitis diagnosis, Osteomyelitis drug therapy
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We present a rare case of destructive osteomyelitis of the sternum caused by Parvimonas micra and Campylobacter rectus A previously healthy female patient in her 40s presented to the emergency department due to a spontaneous rupture of an abscess located to the chest wall. Imaging confirmed abscess formation with osteomyelitis of the sternum. Emergent surgical debridement was performed, blood and bone cultures were taken and the patient received antibiotic treatment. Cultures of the bone and deep tissue revealed infection with Parvimonas micra and Campylobacter rectus , both being members of the oral flora and associated with chronic periodontitis. Receiving targeted antibiotic treatment, our patient made a quick recovery. After treatment of the osteomyelitis, our patient was referred to the dentist where chronic periodontitis could be confirmed. Invasive infections with Parvimonas micra and Campylobacter rectus are rare. Investigation of a dental origin is crucial to prevent recurrent infections., Competing Interests: Competing interests: None declared., (© BMJ Publishing Group Limited 2022. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)
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- 2022
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20. Clinical effect of obesity on N-terminal pro-B-type natriuretic peptide cut-off concentrations for the diagnosis of acute heart failure.
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Kozhuharov N, Martin J, Wussler D, Lopez-Ayala P, Belkin M, Strebel I, Flores D, Diebold M, Shrestha S, Nowak A, Gualandro DM, Michou E, Zimmermann T, Rentsch K, von Eckardstein A, Keller DI, Breidthardt T, and Mueller C
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- Acute Disease, Aged, Biomarkers, Humans, Middle Aged, Obesity complications, Obesity diagnosis, Peptide Fragments, Prospective Studies, Heart Failure diagnosis, Natriuretic Peptide, Brain
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Aims: Obese patients have lower natriuretic peptide concentrations. We hypothesized that adjusting the concentration of N-terminal pro-B-type natriuretic peptide (NT-proBNP) for obesity could further increase its clinical utility in the early diagnosis of acute heart failure (AHF)., Methods and Results: This hypothesis was tested in a prospective diagnostic study enrolling unselected patients presenting to the emergency department with acute dyspnoea. Two independent cardiologists/internists centrally adjudicated the final diagnosis using all individual patient information including cardiac imaging. NT-proBNP plasma concentrations were applied: first, using currently recommended cut-offs; second, using cut-offs lowered by 33% with body mass index (BMI) of 30-34.9 kg/m
2 and by 50% with BMI ≥ 35 kg/m2 . Among 2038 patients, 509 (25%) were obese, of which 271 (53%) had AHF. The diagnostic accuracy of NT-proBNP as quantified by the area under the receiver-operating characteristic curve was lower in obese versus non-obese patients (0.890 vs. 0.938). For rapid AHF rule-out in obese patients, the currently recommended cut-off of 300 pg/ml achieved a sensitivity of 96.7% (95% confidence interval [CI] 93.8-98.2%), ruling out 29% of patients and missing 9 AHF patients. For rapid AHF rule-in, the age-dependent cut-off concentrations (age <50 years: 450 pg/ml; age 50-75 years: 900 pg/ml; age >75 years: 1800 pg/ml) achieved a specificity of 84.9% (95% CI 79.8-88.9%). Proportionally lowering the currently recommended cut-offs by BMI increased sensitivity to 98.2% (95% CI 95.8-99.2%), missing 5 AHF patients; reduced the proportion of AHF patients remaining in the 'gray zone' (48% vs. 26%; p = 0.002), achieving a specificity of 76.5% (95% CI 70.7-81.4%)., Conclusions: Adjusting NT-proBNP concentrations for obesity seems to further increase its clinical utility in the early diagnosis of AHF., (© 2022 The Authors. European Journal of Heart Failure published by John Wiley & Sons Ltd on behalf of European Society of Cardiology.)- Published
- 2022
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21. Diagnosis of acute heart failure in CT pulmonary angiography: feasibility and accuracy.
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Vittoria de Martini I, Kobe AR, Roeren C, Manka R, Euler A, Keller DI, Ruschitzka F, Alkadhi H, and Eberhard M
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- Aged, Aged, 80 and over, Angiography methods, Computed Tomography Angiography, Feasibility Studies, Humans, Middle Aged, Retrospective Studies, Sensitivity and Specificity, Tomography, X-Ray Computed methods, Heart Failure diagnostic imaging, Pulmonary Embolism diagnostic imaging
- Abstract
Objectives: To evaluate the feasibility and accuracy of diagnosing acute heart failure (HF) with CT pulmonary angiography (CTPA) in emergency department patients., Methods: In this retrospective single-center study, we evaluated 150 emergency department patients (mean age 65 ± 17 years) undergoing CTPA with a fixed scan (100 kVp) and contrast media protocol (60 mL, 4 mL/s) who had no pulmonary embolism (PE). Patients were subdivided into training cohort (n = 100) and test cohort (n = 50). Three independent, blinded readers measured the attenuation in the right ventricle (RV) and left ventricle (LV) on axial images. The ratio (HU
ratio ) and difference (HUdiff ) between RV and LV attenuation were calculated. Diagnosis of acute HF was made on the basis of clinical, laboratory, and echocardiography data. Optimal thresholds, sensitivity, and specificity were calculated using the area under the curve (AUC) from receiver operating characteristics analysis., Results: Fifty-nine of the 150 patients (40%) were diagnosed with acute HF. Attenuation measurements showed an almost perfect interobserver agreement (intraclass correlation coefficient: 0.986, 95%CI: 0.980-0.991). NT-pro BNP exhibited moderate correlations with HUratio (r = 0.50, p < 0.001) and HUdiff (r = 0.50, p < 0.001). In the training cohort, HUratio (AUC: 0.89, 95%CI: 0.82-0.95) and HUdiff (AUC: 0.88, 95%CI: 0.81-0.95) showed a very good performance to diagnose HF. Optimal cutoff values were 1.42 for HUratio (sensitivity 93%; specificity 75%) and 113 for HUdiff (sensitivity 93%; specificity 73%). Applying these thresholds to the test cohort yielded a sensitivity of 89% and 89% and a specificity of 69% and 63% for HUratio and HUdiff , respectively., Conclusion: In emergency department patients undergoing CTPA and showing no PE, both HUratio and HUdiff have a high sensitivity for diagnosing acute HF., Key Points: • Heart failure is a common differential diagnosis in patients undergoing CT pulmonary angiography. • In emergency department patients undergoing CT pulmonary angiography and showing no pulmonary embolism, attenuation differences of the left and right ventricle have a high sensitivity for diagnosing acute heart failure., (© 2022. The Author(s).)- Published
- 2022
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22. Is There a Role for Topical Swallowed Steroids upon Emergency Room Admission for Suspected Food Bolus Obstruction in Eosinophilic Esophagitis?
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Schreiner P, Greuter T, Tatu A, Keller DI, Straumann A, and Biedermann L
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- Deglutition, Emergency Service, Hospital, Enteritis, Eosinophilia, Female, Gastritis, Humans, Male, Middle Aged, Steroids therapeutic use, Deglutition Disorders diagnosis, Deglutition Disorders drug therapy, Deglutition Disorders etiology, Eosinophilic Esophagitis complications, Eosinophilic Esophagitis diagnosis, Eosinophilic Esophagitis drug therapy
- Abstract
Since most pharmacological treatments in case of esophageal food impaction (EFI) are unsuccessful, an endoscopy is usually required to resolve EFI. We present the first results of a budesonide orodispersible tablet (BOT) as a medical treatment option before endoscopy. We evaluated all patients with a suspected EFI to receive BOT before emergent endoscopy at a tertiary hospital between March 2019 and June 2020. A total of eight patients received BOT before endoscopy. Mean age was 50.1 years and 87.5% were male. In 38% (3/8) of patients the EFI resolved without endoscopic intervention. No adverse events occurred. After endoscopy, a diagnosis of EoE was established in 75%. This case series demonstrate the potential of BOT as medical rescue therapy in case of EFI., (© 2021. The Author(s).)
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- 2022
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23. Acute on Chronic Thromboembolic Pulmonary Hypertension: Case Series and Review of Management.
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Opitz I, Patella M, Lauk O, Inci I, Bettex D, Horisberger T, Schüpbach R, Keller DI, Frauenfelder T, Kucher N, Granton J, Pfammatter T, de Perrot M, and Ulrich S
- Abstract
Chronic thromboembolic pulmonary hypertension (CTEPH) is a distinct form of precapillary pulmonary hypertension classified as group 4 by the World Symposium on Pulmonary Hypertension (WSPH) and should be excluded during an episode of acute pulmonary embolism (PE). Patients presenting to emergency departments with sudden onset of signs and symptoms of acute PE may already have a pre-existing CTEPH condition decompensated by the new PE episode. Identifying an underlying and undiagnosed CTEPH during acute PE, while challenging, is an important consideration as it will alter the patients' acute and long-term management. Differential diagnosis and evaluation require an interdisciplinary expert team. Analysis of the clinical condition, the CT angiogram, and the hemodynamic situation are important considerations; patients with CTEPH usually have significantly higher sPAP at the time of index PE, which is unusual and unattainable in the context of acute PE and a naïve right ventricle. The imaging may reveal signs of chronic disease such as right ventricle hypertrophy bronchial collaterals and atypical morphology of the thrombus. There is no standard for the management of acute on chronic CTEPH. Herein, we provide a diagnostic and management algorithm informed by several case descriptions and a review of the literature.
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- 2022
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24. A 0/1h-algorithm using cardiac myosin-binding protein C for early diagnosis of myocardial infarction.
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Kaier TE, Twerenbold R, Lopez-Ayala P, Nestelberger T, Boeddinghaus J, Alaour B, Huber IM, Zhi Y, Koechlin L, Wussler D, Wildi K, Shrestha S, Strebel I, Miro O, Martín-Sánchez JF, Christ M, Kawecki D, Keller DI, Rubini Gimenez M, Marber M, and Mueller C
- Subjects
- Algorithms, Biomarkers, Carrier Proteins, Early Diagnosis, Humans, Prospective Studies, Troponin T, Myocardial Infarction diagnosis, Non-ST Elevated Myocardial Infarction diagnosis
- Abstract
Aims: Cardiac myosin-binding protein C (cMyC) demonstrated high diagnostic accuracy for the early detection of non-ST-elevation myocardial infarction (NSTEMI). Its dynamic release kinetics may enable a 0/1h-decision algorithm that is even more effective than the ESC hs-cTnT/I 0/1 h rule-in/rule-out algorithm., Methods and Results: In a prospective international diagnostic study enrolling patients presenting with suspected NSTEMI to the emergency department, cMyC was measured at presentation and after 1 h in a blinded fashion. Modelled on the ESC hs-cTnT/I 0/1h-algorithms, we derived a 0/1h-cMyC-algorithm. Final diagnosis of NSTEMI was centrally adjudicated according to the 4th Universal Definition of Myocardial Infarction. Among 1495 patients, the prevalence of NSTEMI was 17%. The optimal derived 0/1h-algorithm ruled-out NSTEMI with cMyC 0 h concentration below 10 ng/L (irrespective of chest pain onset) or 0 h cMyC concentrations below 18 ng/L and 0/1 h increase <4 ng/L. Rule-in occurred with 0 h cMyC concentrations of at least 140 ng/L or 0/1 h increase ≥15 ng/L. In the validation cohort (n = 663), the 0/1h-cMyC-algorithm classified 347 patients (52.3%) as 'rule-out', 122 (18.4%) as 'rule-in', and 194 (29.3%) as 'observe'. Negative predictive value for NSTEMI was 99.6% [95% confidence interval (CI) 98.9-100%]; positive predictive value 71.1% (95% CI 63.1-79%). Direct comparison with the ESC hs-cTnT/I 0/1h-algorithms demonstrated comparable safety and even higher triage efficacy using the 0h-sample alone (48.1% vs. 21.2% for ESC hs-cTnT-0/1 h and 29.9% for ESC hs-cTnI-0/1 h; P < 0.001)., Conclusion: The cMyC 0/1h-algorithm provided excellent safety and identified a greater proportion of patients suitable for direct rule-out or rule-in based on a single measurement than the ESC 0/1h-algorithm using hs-cTnT/I., Trial Registration: ClinicalTrials.gov number, NCT00470587., (© The Author(s) 2022. Published by Oxford University Press on behalf of the European Society of Cardiology.)
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- 2022
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25. International Validation of the Canadian Syncope Risk Score : A Cohort Study.
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Zimmermann T, du Fay de Lavallaz J, Nestelberger T, Gualandro DM, Lopez-Ayala P, Badertscher P, Widmer V, Shrestha S, Strebel I, Glarner N, Diebold M, Miró Ò, Christ M, Cullen L, Than M, Martin-Sanchez FJ, Di Somma S, Peacock WF, Keller DI, Bilici M, Costabel JP, Kühne M, Breidthardt T, Thiruganasambandamoorthy V, Mueller C, Belkin M, Leu K, Lohrmann J, Boeddinghaus J, Twerenbold R, Koechlin L, Walter JE, Amrein M, Wussler D, Freese M, Puelacher C, Kawecki D, Morawiec B, Salgado E, Martinez-Nadal G, Inostroza CIF, Mandrión JB, Poepping I, Rentsch K, von Eckardstein A, Buser A, Greenslade J, Reichlin T, and Bürgler F
- Subjects
- Aged, Canada, Cohort Studies, Humans, Prospective Studies, Risk Assessment, Risk Factors, Emergency Service, Hospital, Syncope diagnosis, Syncope therapy
- Abstract
Background: The Canadian Syncope Risk Score (CSRS) was developed to predict 30-day serious outcomes not evident during emergency department (ED) evaluation., Objective: To externally validate the CSRS and compare it with another validated score, the Osservatorio Epidemiologico della Sincope nel Lazio (OESIL) score., Design: Prospective cohort study., Setting: Large, international, multicenter study recruiting patients in EDs in 8 countries on 3 continents., Participants: Patients with syncope aged 40 years or older presenting to the ED within 12 hours of syncope., Measurements: Composite outcome of serious clinical plus procedural events (primary outcome) and the primary composite outcome excluding procedural interventions (secondary outcome)., Results: Among 2283 patients with a mean age of 68 years, the primary composite outcome occurred in 7.2%, and the composite outcome excluding procedural interventions occurred in 3.1% at 30 days. Prognostic performance of the CSRS was good for both 30-day composite outcomes and better compared with the OESIL score (area under the receiver-operating characteristic curve [AUC], 0.85 [95% CI, 0.83 to 0.88] vs. 0.74 [CI, 0.71 to 0.78] and 0.80 [CI, 0.75 to 0.84] vs. 0.69 [CI, 0.64 to 0.75], respectively). Safety of triage, as measured by the frequency of the primary composite outcome in the low-risk group, was higher using the CSRS (19 of 1388 [0.6%]) versus the OESIL score (17 of 1104 [1.5%]). A simplified model including only the clinician classification of syncope (cardiac syncope, vasovagal syncope, or other) variable at ED discharge-a component of the CSRS-achieved similar discrimination as the CSRS (AUC, 0.83 [CI, 0.80 to 0.87] for the primary composite outcome)., Limitation: Unable to disentangle the influence of other CSRS components on clinician classification of syncope at ED discharge., Conclusion: This international external validation of the CSRS showed good performance in identifying patients at low risk for serious outcomes outside of Canada and superior performance compared with the OESIL score. However, clinician classification of syncope at ED discharge seems to explain much of the performance of the CSRS in this study. The clinical utility of the CSRS remains uncertain., Primary Funding Source: Swiss National Science Foundation & Swiss Heart Foundation.
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- 2022
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26. Characteristics and Outcomes of Type 2 Myocardial Infarction.
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Coscia T, Nestelberger T, Boeddinghaus J, Lopez-Ayala P, Koechlin L, Miró Ò, Keller DI, Strebel I, Yufera Sanchez A, Okamura B, Wussler D, Shrestha S, Hausknecht K, Martín-Sánchez FJ, Christ M, Kawecki D, Twerenbold R, Wildi K, Rubini Gimenez M, and Mueller C
- Subjects
- Humans, Risk Factors, Myocardial Infarction therapy
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- 2022
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27. Incidence, clinical presentation, management, and outcome of acute pericarditis and myopericarditis.
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Prepoudis A, Koechlin L, Nestelberger T, Boeddinghaus J, Lopez-Ayala P, Wussler D, Zimmermann T, Rubini Giménez M, Strebel I, Puelacher C, Shrestha S, Keller DI, Christ M, Gualandro DM, Twerenbold R, Martinez-Nadal G, Lopez-Barbeito B, Miro O, and Mueller C
- Subjects
- Chest Pain diagnosis, Chest Pain epidemiology, Chest Pain etiology, Female, Humans, Incidence, Male, Middle Aged, Myocarditis diagnosis, Myocarditis epidemiology, Myocarditis therapy, Non-ST Elevated Myocardial Infarction, Pericarditis diagnosis, Pericarditis epidemiology, Pericarditis therapy
- Abstract
Aims: Little is known about the epidemiology, clinical presentation, management, and outcome of acute pericarditis and myopericarditis., Methods and Results: The final diagnoses of acute pericarditis, myopericarditis, and non-ST-segment elevation myocardial infarction (NSTEMI) of patients presenting to seven emergency departments in Switzerland with acute chest pain were centrally adjudicated by two independent cardiologists using all information including serial measurements of high-sensitivity cardiac troponin T. The overall incidence of pericarditis and myopericarditis was estimated relative to the established incidence of NSTEMI. Current management and long-term outcome of both conditions were also assessed. Among 2533 chest pain patients, the incidence of pericarditis, myopericarditis, and NSTEMI were 1.9% (n = 48), 1.1% (n = 29), and 21.6% (n = 548), respectively. Accordingly, the estimated incidence of pericarditis and myopericarditis in Switzerland was 10.1 [95% confidence interval (95% CI) 9.3-10.9] and 6.1 (95% CI 5.6-6.7) cases per 100 000 population per year, respectively, vs. 115.0 (95% CI 112.3-117.6) cases per 100 000 population per year for NSTEMI. Pericarditis (85% male, median age 46 years) and myopericarditis (62% male, median age 56 years) had male predominance, and commonly (50% and 97%, respectively) resulted in hospitalization. No patient with pericarditis or myopericarditis died or had life-threatening arrhythmias within 30 days [incidence 0% (95% CI 0.0-4.8%)]. Compared with NSTEMI, the 2-year all-cause mortality adjusted hazard ratio of pericarditis and myopericarditis was 0.40 (95% CI 0.05-2.96), being 0.59 (95% CI 0.40-0.88) for non-cardiac causes of chest pain., Conclusion: Pericarditis and myopericarditis are substantially less common than NSTEMI and have an excellent short- and long-term outcome., Clinical Trial Registration: ClinicalTrial.gov, number NCT00470587, https://clinicaltrials.gov/ct2/show/NCT00470587., (Published on behalf of the European Society of Cardiology. All rights reserved. © The Author(s) 2021. For permissions, please email: journals.permissions@oup.com.)
- Published
- 2022
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28. Willingness to donate organs - an anonymised survey in the emergency department.
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Slankamenac K, Temperli E, and Keller DI
- Subjects
- Emergency Service, Hospital, Health Knowledge, Attitudes, Practice, Humans, Prospective Studies, Surveys and Questionnaires, Tissue Donors, Tissue and Organ Procurement
- Abstract
Background: In Switzerland, 519 patients received an organ in 2020. In total, 2124 patients were on the donor organ waiting list in 2020. There are many more people who need an organ than people willing to donate one. Therefore, 43 organs had to be imported from outside of Switzerland and this number was still not sufficient. This disproportion of patients needing an organ and available donor organs is the subject of ongoing discussion. A solution to this problem might be provided by a popular initiative proposing that every single resident of Switzerland should be an organ donor, unless a person explicitly rejects organ donation. We surveyed the patients in a single tertiary care emergency department (ED) to determine whether they had an organ donor card or were registered in the Swiss National Organ Donor Registry (NODR), the frequency of willingness to donate organs and which factors were associated with being an organ donor., Methods: In a prospective anonymised survey during July 2019, we enrolled patients who visited a Swiss tertiary care ED, during one week from 8:00 to 18:00, two weeks from 14:00 to 23:00 and one week from 23:00 to 8:00. The patients completed a written, standardised and self-administrated questionnaire during the waiting time in the ED. Descriptive, uni- and multivariable logistic regression analysis were performed., Results: We enrolled 307 ED patients, of whom 62 (20.2%) were donor card holders or were registered in the Swiss NODR. Of these, 53 (85.5%) would be willing to donate organs. The remaining nine (14.5%) were not willed to donate an organ; the reasons for this were very heterogeneous. In contrast, the two leading reasons for willingness to donate organs were: to help after death (94.3%) and to free relatives from the task of making the decision (43.4%). From the 245 (79.8%) participants who did not have an organ donor card or were not registered, 84 respondents (34.3%) lacked knowledge of this topic, 65 (26.5%) had not yet thought about the topic and 51 (20.8%) had not yet had time to take care of this issue. Blood donation (odds ratio [OR] 2.1, 95% confidence interval [CI] 1.1-3.9; p = 0.018) or receiving a transplant in the past (OR 6.1, 95% CI 1.3-29.1; p = 0.023) and having a university degree (OR 1.8, 95% CI 1.0-3.2; p = 0.049) were factors associated with being an organ donor card holder., Conclusions: Only one in five ED patients had a fully completed organ donor card or were registered in the Swiss NODR. Of these, the great majority were willing to donate organs. Most of the ED patients who did not have an organ donor card or were not registered in the NODR lacked knowledge and information about the topic, had not yet thought about it or had not had time to deal with this issue. Factors such as a positive history of blood donation, organ transplantation in the past or having a university degree were associated with having an organ donor card. In order to increase the willingness to donate organs in the future, it is of immense importance to provide better information and more details and knowledge about this important topic.
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- 2022
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29. Mindfulness predicts less depression, anxiety, and social impairment in emergency care personnel: A longitudinal study.
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Westphal M, Wall M, Corbeil T, Keller DI, Brodmann-Maeder M, Ehlert U, Exadaktylos A, Bingisser R, and Kleim B
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- Adult, Emergency Medical Services, Female, Follow-Up Studies, Humans, Longitudinal Studies, Male, Occupational Stress, Social Support, Surveys and Questionnaires, Workplace, Anxiety pathology, Depression pathology, Health Personnel psychology, Mindfulness methods
- Abstract
Medical personnel working in emergency rooms (ER) are at increased risk of mental health problems and suicidality. There is increasing evidence that mindfulness-based interventions can improve burnout and other mental health outcomes in health care providers. In contrast, few longitudinal prospective studies have examined protective functions of dispositional mindfulness in this population. The objective of this study was to examine whether mindfulness prospectively predicts anxiety, depression, and social impairment in a sample of emergency care professionals. The authors administered online surveys to ER personnel prior to work in ER, and at 3 and 6 months follow up. Participants were 190 ER personnel (73% residents, 16% medical students, 11% nurses). Linear mixed effects regression was used to model longitudinal 3-month and 6-month follow up of depression, anxiety, and social impairment. Predictors included time-varying contemporaneous work stressors, perceived social support at work and life events, and baseline dispositional mindfulness, demographics, and workplace characteristics. Mindfulness indexed when starting ER work predicted less depression, anxiety, and social impairment 6 months later. Mindfulness remained a strong predictor of mental health outcomes after controlling for time-varying stressful events in emergency care, negative life events, and social support at work. Mindfulness moderated the adverse impact of poor social support at work on depression. To our knowledge, this is the first longitudinal study to show that mindfulness prospectively and robustly predicts anxiety, depression, and social impairment. Results support the role of mindfulness as a potential resilience factor in at-risk health care providers., Competing Interests: The authors have declared that no competing interests exist.
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- 2021
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30. Performance of the ESC 0/2h-algorithm using high-sensitivity cardiac troponin I in the early diagnosis of myocardial infarction.
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Koechlin L, Boeddinghaus J, Nestelberger T, Lopez-Ayala P, Wussler D, Shrestha S, Resa T, Wildi K, Bakula A, Frey S, Miró Ò, Martin-Sanchez FJ, Strebel I, Gualandro DM, Eckstein FS, Reuthebuch O, Keller DI, Twerenbold R, Giménez MR, and Mueller C
- Subjects
- Biomarkers blood, Early Diagnosis, Humans, Predictive Value of Tests, Prospective Studies, Reproducibility of Results, Algorithms, Myocardial Infarction blood, Myocardial Infarction diagnosis, Troponin I blood
- Abstract
The 2020 guidelines of the European Society of Cardiology (ESC) recommend a novel ESC 0/2h-algorithm as the preferred alternative to the ESC 0/1h-algorithm in the early triage for rule-out and/or rule-in of Non-ST-segment-elevation myocardial infarction (NSTEMI). The aim was to prospectively validate the performance of the ESC 0/2h-algorithm using the high-sensitivity cardiac troponin I (hs-cTnI) assay (ARCHITECT) in an international, multicenter diagnostic study enrolling patients presenting with acute chest discomfort to the emergency department., (Copyright © 2021 Elsevier Inc. All rights reserved.)
- Published
- 2021
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31. Clinical presentation of patients with prior coronary artery bypass grafting and suspected acute myocardial infarction.
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Koechlin L, Boeddinghaus J, Nestelberger T, Miró Ò, Fuenzalida C, Martinez-Nadal G, López B, Wussler D, Walter J, Zimmermann T, Troester V, Lopez-Ayala P, Baumgartner B, Ratmann PD, Diebold M, Prepoudis A, Huber J, Christ M, Wildi K, Rubini Giménez M, Strebel I, Gualandro DM, Martin-Sanchez FJ, Kawecki D, Keller DI, Reuthebuch O, Eckstein FS, Reichlin T, Twerenbold R, and Mueller C
- Subjects
- Angina, Unstable, Chest Pain, Electrocardiography, Humans, Coronary Artery Bypass, Myocardial Infarction diagnosis, Myocardial Infarction epidemiology
- Abstract
Aims: Diagnosis of acute myocardial infarction (AMI) can be challenging in patients with prior coronary artery bypass grafting (CABG)., Methods and Results: Final diagnoses were adjudicated by two independent cardiologists using the universal definition of AMI among patients presenting to the emergency department (ED) with suspected AMI. Diagnostic accuracy of 34 chest pain characteristics (CPCs) and four electrocardiogram (ECG) signatures stratified according to the presence or absence of prior CABG were prospectively quantified. Among 4015 patients (no prior CABG: n = 3686; prior CABG: n = 329), prevalence of AMI and unstable angina were higher in patients with prior CABG (35% vs. 18%; 26% vs. 8%; both P < 0.001). Three CPCs (9%) and two electrocardiographic findings (50%) showed a different diagnostic performance (interaction P < 0.05) with loss of diagnostic value in patients with prior CABG. The diagnostic accuracy as quantified by the area under the curve (AUC) of the integrated clinical judgement was moderate to good in patients with prior CABG, and significantly lower compared to patients without prior CABG [AUC 0.80 (95% confidence interval (CI) 0.75-0.84) vs. AUC 0.87 (95% CI 0.86-0.89); P = 0.004]. Time to discharge from the ED was significantly longer in patients with prior CABG [359 (215-525) min vs. 300 (192-435) min; P < 0.001]. Key findings were confirmed in a large independent external validation cohort (n = 13 653)., Conclusions: Patients with prior CABG presenting with suspected AMI have a high prevalence of AMI and unstable angina and lower diagnostic accuracy of CPCs and the ECG, possibly justifying liberal use of early coronary angiography in these vulnerable patients., Clinicaltrials.gov Registry: Number NCT00470587., (Published on behalf of the European Society of Cardiology. All rights reserved. © The Author(s) 2020. For permissions, please email: journals.permissions@oup.com.)
- Published
- 2021
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32. Novel Criteria for the Observe-Zone of the ESC 0/1h-hs-cTnT Algorithm.
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Lopez-Ayala P, Nestelberger T, Boeddinghaus J, Koechlin L, Ratmann PD, Strebel I, Gehrke J, Meier S, Walter J, Rubini Gimenez M, Mutschler E, Miró Ò, López-Barbeito B, Martín-Sánchez FJ, Rodríguez-Adrada E, Keller DI, Newby LK, Twerenbold R, Giannitsis E, Lindahl B, and Mueller C
- Subjects
- Cardiac Imaging Techniques methods, Cardiology methods, Data Collection, Diagnostic Tests, Routine adverse effects, Heart physiopathology, Humans, Myocardial Infarction physiopathology, Algorithms, Cardiovascular System physiopathology, Myocardial Infarction therapy, ST Elevation Myocardial Infarction therapy
- Abstract
Background: The non-ST-segment-elevation myocardial infarction (NSTEMI) guidelines of the European Society of Cardiology (ESC) recommend a 3h cardiac troponin determination in patients triaged to the observe-zone of the ESC 0/1h-algorithm; however, no specific cutoff for further triage is endorsed. Recently, a specific cutoff for 0/3h high-sensitivity cardiac troponin T (hs-cTnT) change (7 ng/L) was proposed, warranting external validation., Methods: Patients presenting with acute chest discomfort to the emergency department were prospectively enrolled into an international multicenter diagnostic study. Final diagnoses were centrally adjudicated by 2 independent cardiologists applying the fourth universal definition of myocardial infarction, on the basis of complete cardiac workup, cardiac imaging, and serial hs-cTnT. Hs-cTnT concentrations were measured at presentation, after 1 hour, and after 3 hours. The objective was to externally validate the proposed cutoff, and if necessary, derive and internally as well as externally validate novel 0/3h-criteria for the observe-zone of the ESC 0/1h-hs-cTnT-algorithm in an independent multicenter cohort., Results: Among 2076 eligible patients, application of the ESC 0/1h-hs-cTnT-algorithm triaged 1512 patients (72.8%) to either rule out or rule in NSTEMI, leaving 564 patients (27.2%) in the observe-zone (adjudicated NSTEMI prevalence, 120/564 patients, 21.3%). The suggested 0/3h-hs-cTnT-change of <7 ng/L triaged 517 patients (91.7%) toward rule-out, resulting in a sensitivity of 33.3% (95% CI, 25.5-42.2), missing 80 patients with NSTEMI, and ≥7 ng/L triaged 47 patients toward rule-in (8.3%), resulting in a specificity of 98.4% (95% CI, 96.8-99.2). Novel derived 0/3h-criteria for the observe-zone patients ruled out NSTEMI with a 3h hs-cTnT concentration <15 ng/L and a 0/3h-hs-cTnT absolute change <4 ng/L, triaging 138 patients (25%) toward rule-out, resulting in a sensitivity of 99.2% (95% CI, 96.0-99.9), missing 1 patient with NSTEMI. A 0/3h-hs-cTnT absolute change ≥6 ng/L triaged 63 patients (11.2%) toward rule-in, resulting in a specificity of 98% (95% CI, 96.2-98.9) Thereby, the novel 0/3h-criteria reduced the number of patients in the observe zone by 36%s and the number of type 1 myocardial infarction by 50%. Findings were confirmed in both internal and external validation., Conclusions: A combination of a 3h-hs-cTnT concentration (<15 ng/L) and a 0/3h absolute change (<4 ng/L) is necessary to safely rule out NSTEMI in patients remaining in the observe-zone of the ESC 0/1h-hs-cTnT-algorithm. Registration: URL: https://clinicaltrials.gov; Unique identifier: NCT00470587.
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- 2021
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33. Early standardized clinical judgement for syncope diagnosis in the emergency department.
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du Fay de Lavallaz J, Badertscher P, Zimmermann T, Nestelberger T, Walter J, Strebel I, Coelho C, Miró Ò, Salgado E, Christ M, Geigy N, Cullen L, Than M, Javier Martin-Sanchez F, Di Somma S, Frank Peacock W, Morawiec B, Wussler D, Keller DI, Gualandro D, Michou E, Kühne M, Lohrmann J, Reichlin T, and Mueller C
- Subjects
- Biomarkers, Early Diagnosis, Emergency Service, Hospital, Humans, Natriuretic Peptide, Brain, Prospective Studies, Troponin I, Clinical Reasoning, Syncope diagnosis, Syncope etiology
- Abstract
Background: The diagnosis of cardiac syncope remains a challenge in the emergency department (ED)., Objective: Assessing the diagnostic accuracy of the early standardized clinical judgement (ESCJ) including a standardized syncope-specific case report form (CRF) in comparison with a recommended multivariable diagnostic score., Methods: In a prospective international observational multicentre study, diagnostic accuracy for cardiac syncope of ESCJ by the ED physician amongst patients ≥ 40 years presenting with syncope to the ED was directly compared with that of the Evaluation of Guidelines in Syncope Study (EGSYS) diagnostic score. Cardiac syncope was centrally adjudicated independently of the ESCJ or conducted workup by two ED specialists based on all information available up to 1-year follow-up. Secondary aims included direct comparison with high-sensitivity cardiac troponin I (hs-cTnI) and B-type natriuretic peptide (BNP) concentrations and a Lasso regression to identify variables contributing most to ESCJ., Results: Cardiac syncope was adjudicated in 252/1494 patients (15.2%). The diagnostic accuracy of ESCJ for cardiac syncope as quantified by the area under the curve (AUC) was 0.87 (95% CI: 0.84-0.89), and higher compared with the EGSYS diagnostic score (0.73 (95% CI: 0.70-0.76)), hs-cTnI (0.77 (95% CI: 0.73-0.80)) and BNP (0.77 (95% CI: 0.74-0.80)), all P < 0.001. Both biomarkers (alone or in combination) on top of the ESCJ significantly improved diagnostic accuracy., Conclusion: ESCJ including a standardized syncope-specific CRF has very high diagnostic accuracy and outperforms the EGSYS score, hs-cTnI and BNP., (© 2021 Association for Publication of The Journal of Internal Medicine.)
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- 2021
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34. Reduced Relative Sensitivity of the Elecsys SARS-CoV-2 Antigen Assay in Saliva Compared to Nasopharyngeal Swabs.
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Audigé A, Böni J, Schreiber PW, Scheier T, Buonomano R, Rudiger A, Braun DL, Eich G, Keller DI, Hasse B, Berger C, Günthard HF, Manrique A, Trkola A, and Huber M
- Abstract
Early identification and isolation of SARS-CoV-2-infected individuals is central to contain the COVID-19 pandemic. Nasopharyngeal swabs (NPS) serve as a specimen for detection by RT-PCR and rapid antigen screening tests. Saliva has been confirmed as a reliable alternative specimen for RT-PCR and has been shown to be valuable for diagnosing children and in repetitive mass testing due to its non-invasive collection. Combining the advantages of saliva with those of antigen tests would be highly attractive to further increase test capacities. Here, we evaluated the performance of the Elecsys SARS-CoV-2 Antigen assay (Roche) in RT-PCR-positive paired NPS and saliva samples (N = 87) and unpaired NPS (N = 100) with confirmed SARS-CoV-2 infection (Roche cobas SARS-CoV-2 IVD test). We observed a high positive percent agreement (PPA) of the antigen assay with RT-PCR in NPS, reaching 87.2% across the entire cohort, whereas the overall PPA for saliva was insufficient (40.2%). At Ct values ≤ 28, PPA were 100% and 91.2% for NPS and saliva, respectively. At lower viral loads, the sensitivity loss of the antigen assay in saliva was striking. At Ct values ≤ 35, the PPA for NPS remained satisfactory (91.5%), whereas the PPA for saliva dropped to 46.6%. In conclusion, saliva cannot be recommended as a reliable alternative to NPS for testing with the Elecsys Anti-SARS-CoV-2 Antigen assay. As saliva is successfully used broadly in combination with RT-PCR testing, it is critical to create awareness that suitability for RT-PCR cannot be translated to implementation in antigen assays without thorough evaluation of each individual test system.
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- 2021
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35. Cardiovascular Biomarkers in the Early Discrimination of Type 2 Myocardial Infarction.
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Nestelberger T, Boeddinghaus J, Lopez-Ayala P, Kaier TE, Marber M, Gysin V, Koechlin L, Sanchez AY, Giménez MR, Wussler D, Walter JE, Strebel I, Zimmermann T, Glarner N, Miró Ò, Martin-Sanchez FJ, Zehnder T, Twerenbold R, Keller DI, and Mueller C
- Subjects
- Aged, Biomarkers, Female, Humans, Male, Middle Aged, Myocardial Infarction blood, Myocardial Infarction etiology, Myocardial Infarction physiopathology, Plaque, Atherosclerotic complications, Prospective Studies, Rupture, Spontaneous, Troponin I blood, Troponin T blood, Myocardial Infarction diagnosis
- Abstract
Importance: Rapid and accurate noninvasive discrimination of type 2 myocardial infarction (T2MI), which is because of a supply-demand mismatch, from type 1 myocardial infarction (T1MI), which arises via plaque rupture, is essential, because treatment differs substantially. Unfortunately, this is a major unmet clinical need, because even high-sensitivity cardiac troponin (hs-cTn) measurement provides only modest accuracy., Objective: To test the hypothesis that novel cardiovascular biomarkers quantifying different pathophysiological pathways involved in T2MI and/or T1MI may aid physicians in the rapid discrimination of T2MI vs T1MI., Design, Setting, and Participants: This international, multicenter prospective diagnostic study was conducted in 12 emergency departments in 5 countries (Switzerland, Spain, Italy, Poland, and the Czech Republic) with patients presenting with acute chest discomfort to the emergency departments. The study quantified the discrimination of hs-cTn T, hs-cTn I, and 17 novel cardiovascular biomarkers measured in subsets of consecutively enrolled patients against a reference standard (final diagnosis), centrally adjudicated by 2 independent cardiologists according to the fourth universal definition of MI, using all information, including cardiac imaging and serial measurements of hs-cTnT or hs-cTnI., Results: Among 5887 patients, 1106 (18.8%) had an adjudicated final diagnosis of MI; of these, 860 patients (77.8%) had T1MI, and 246 patients (22.2%) had T2MI. Patients with T2MI vs those with T1MI had lower concentrations of biomarkers quantifying cardiomyocyte injury hs-cTnT (median [interquartile range (IQR)], 30 (17-55) ng/L vs 58 (28-150) ng/L), hs-cTnI (median [IQR], 23 [10-83] ng/L vs 115 [28-576] ng/L; P < .001), and cardiac myosin-binding protein C (at presentation: median [IQR], 76 [38-189] ng/L vs 257 [75-876] ng/L; P < .001) but higher concentrations of biomarkers quantifying endothelial dysfunction, microvascular dysfunction, and/or hemodynamic stress (median [IQR] values: C-terminal proendothelin 1, 97 [75-134] pmol/L vs 68 [55-91] pmol/L; midregional proadrenomedullin, 0.97 [0.67-1.51] pmol/L vs 0.72 [0.53-0.99] pmol/L; midregional pro-A-type natriuretic peptide, 378 [207-491] pmol/L vs 152 [90-247] pmol/L; and growth differentiation factor 15, 2.26 [1.44-4.35] vs 1.56 [1.02-2.19] ng/L; all P < .001). Discrimination for these biomarkers, as quantified by the area under the receiver operating characteristics curve, was modest (hs-cTnT, 0.67 [95% CI, 0.64-0.71]; hs-cTn I, 0.71 [95% CI, 0.67-0.74]; cardiac myosin-binding protein C, 0.67 [95% CI, 0.61-0.73]; C-terminal proendothelin 1, 0.73 [95% CI, 0.63-0.83]; midregional proadrenomedullin, 0.66 [95% CI, 0.60-0.73]; midregional pro-A-type natriuretic peptide, 0.77 [95% CI, 0.68-0.87]; and growth differentiation factor 15, 0.68 [95% CI, 0.58-0.79])., Conclusions and Relevance: In this study, biomarkers quantifying myocardial injury, endothelial dysfunction, microvascular dysfunction, and/or hemodynamic stress provided modest discrimination in early, noninvasive diagnosis of T2MI.
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- 2021
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36. Early kinetics of cardiac troponin in suspected acute myocardial infarction.
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Rubini Giménez M, Wildi K, Wussler D, Koechlin L, Boeddinghaus J, Nestelberger T, Badertscher P, Sedlmayer R, Puelacher C, Zimmermann T, du Fay de Lavallaz J, Lopez-Ayala P, Leu K, Rentsch K, Miró Ò, López B, Martín-Sánchez FJ, Bustamante J, Kawecki D, Parenica J, Lohrmann J, Kloos W, Buser A, Keller DI, Reichlin T, Twerenbold R, and Mueller C
- Subjects
- Biomarkers, Humans, Kinetics, Prospective Studies, Troponin I, Myocardial Infarction diagnosis, Troponin T
- Abstract
Introduction and Objectives: Release kinetics of high-sensitivity cardiac troponin (hs-cTn) T and I in patients with acute myocardial infarction (AMI) are incompletely understood. We aimed to assess whether hs-cTnT/I release in early AMI is near linear., Methods: In a prospective diagnostic multicenter study the acute release of hs-cTnT and hs-cTnI within 1 and 2hours from presentation to the emergency department was quantified using 3 hs-cTnT/I assays in patients with suspected AMI. The primary endpoint was correlation between hs-cTn changes from presentation to 1 hour vs changes from presentation to 2hours, among all AMI patients and different prespecified subgroups. The final diagnosis was adjudicated by 2 independent cardiologists, based on serial hs-cTnT from the serial study blood samples and additional locally measured hs-cTn values., Results: Among 2437 patients with complete hs-cTnT data, AMI was the adjudicated diagnosis in 376 patients (15%). For hs-cTnT, the correlation coefficient between 0- to 1-hour change and 0- to 2 hour change was 0.931 (95%CI, 0.916-0.944), P <.001. Similar findings were obtained with hs-cTnI (Architect) with correlation coefficients between 0- to 1-hour change and 0- to 2 hour change of 0.969 and hs-cTnI (Centaur) of 0.934 (P <.001 for both). Findings were consistent among type 1 and type 2 AMI and in the subgroup of patients presenting very early after chest pain onset., Conclusions: Patients presenting with early AMI showed a near linear release of hs-cTnT and hs-cTnI. This near linearity provides the pathophysiological basis for rapid diagnostic algorithms using 0- to 1-hour changes as surrogates for 0- to 2 hour or 0- to 3 hour changes. Registered at ClinicalTrials.gov (Identifier: NCT00470587)., (Copyright © 2020 Sociedad Española de Cardiología. Published by Elsevier España, S.L.U. All rights reserved.)
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- 2021
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37. Erysipelothrix rhusiopathiae infection by geese to human transmission.
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Meier SM, Kottwitz J, Keller DI, and Albini S
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- Animals, Female, Geese, Humans, Middle Aged, Zoonoses, Erysipelothrix, Erysipelothrix Infections diagnosis
- Abstract
Erysipelothrix rhusiopathiae transmission to human is often occupation-related, but in most cases, a detailed case history is missing. This case report is based on an interdisciplinary approach and includes a thorough medical record. A 58-year-old laboratory technician working on geese necropsy cut open her glove at a rib fragment of a goose and subsequently noticed a slowly progressive, reddish skin alteration in the particular region of the hand. Bacteriological investigations on the geese revealed septicaemia due to E. rhusiopathiae and therefore substantiated the diagnosis of the patient. The infectious agent could not be cultured from the patient; however, antibiotic susceptibility testing was performed using the goose isolate. An entire follow-up until full recovery of the patient was conducted. Zoonotic infections possibly have a significant impact on certain occupations. This case report analyses a rare but important zoonotic infection to create awareness of this in physicians caring for human patients., Competing Interests: Competing interests: None declared., (© BMJ Publishing Group Limited 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)
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- 2021
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38. External Validation of the No Objective Testing Rules in Acute Chest Pain.
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Ratmann PD, Boeddinghaus J, Nestelberger T, Lopez-Ayala P, Koechlin L, Wildi K, Miro O, Martín-Sánchez FJ, Christ M, Twerenbold R, Rubini Gimenez M, Keller DI, and Mueller C
- Subjects
- Chest Pain blood, Female, Humans, Male, Middle Aged, Pilot Projects, Acute Pain diagnosis, Chest Pain diagnosis, Electrocardiography methods, Emergency Service, Hospital, Troponin blood
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- 2021
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39. Cardiac myosin-binding protein C in the diagnosis and risk stratification of acute heart failure.
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Kozhuharov N, Wussler D, Kaier T, Strebel I, Shrestha S, Flores D, Nowak A, Sabti Z, Nestelberger T, Zimmermann T, Walter J, Belkin M, Michou E, Lopez Ayala P, Gualandro DM, Keller DI, Goudev A, Breidthardt T, Mueller C, and Marber M
- Subjects
- Biomarkers, Carrier Proteins, DNA-Binding Proteins, Humans, Natriuretic Peptide, Brain, Natriuretic Peptide, C-Type, Peptide Fragments, Prognosis, Prospective Studies, Risk Assessment, Stroke Volume, Transcription Factors, Troponin T, Ventricular Function, Left, Heart Failure
- Abstract
Aims: Cardiac myosin-binding protein C (cMyC) seems to be even more sensitive in the quantification of cardiomyocyte injury vs. high-sensitivity cardiac troponin, and may therefore have diagnostic and prognostic utility., Methods and Results: In a prospective multicentre diagnostic study, cMyC, high-sensitivity cardiac troponin T (hs-cTnT), and N-terminal pro-B-type natriuretic peptide (NT-proBNP) plasma concentrations were measured in blinded fashion in patients presenting to the emergency department with acute dyspnoea. Two independent cardiologists centrally adjudicated the final diagnosis. Diagnostic accuracy for acute heart failure (AHF) was quantified by the area under the receiver operating characteristic curve (AUC). All-cause mortality within 360 days was the prognostic endpoint. Among 1083 patients eligible for diagnostic analysis, 51% had AHF. cMyC concentrations at presentation were higher among AHF patients vs. patients with other final diagnoses [72 (interquartile range, IQR 39-156) vs. 22 ng/L (IQR 12-42), P < 0.001)]. cMyC's AUC was high [0.81, 95% confidence interval (CI) 0.78-0.83], higher than hs-cTnT's (0.79, 95% CI 0.76-0.82, P = 0.081) and lower than NT-proBNP's (0.91, 95% CI 0.89-0.93, P < 0.001). Among 794 AHF patients eligible for prognostic analysis, 28% died within 360 days; cMyC plasma concentrations above the median indicated increased risk of death (hazard ratio 2.19, 95% CI 1.66-2.89; P < 0.001). cMyC's prognostic accuracy was comparable with NT-proBNP's and hs-cTnT's. cMyC did not independently predict all-cause mortality when used in validated multivariable regression models. In novel multivariable regression models including medication, age, left ventricular ejection fraction, and discharge creatinine, cMyC remained an independent predictor of death and had no interactions with medical therapies at discharge., Conclusion: Cardiac myosin-binding protein C may aid physicians in the rapid triage of patients with suspected AHF., (© 2021 European Society of Cardiology.)
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- 2021
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40. External validation of the clinical chemistry score.
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Wildi K, Boeddinghaus J, Nestelberger T, Haaf P, Koechlin L, Ayala Lopez P, Walter J, Badertscher P, Ratmann PD, Miró Ò, Martin-Sanchez FJ, Muzyk P, Kaeslin M, RubiniGiménez M, M Gualandro D, Buergler F, Keller DI, Christ M, Twerenbold R, and Mueller C
- Subjects
- Adult, Aged, Aged, 80 and over, Disease-Free Survival, Female, Humans, Male, Middle Aged, Prospective Studies, Survival Rate, Myocardial Infarction blood, Myocardial Infarction mortality, Troponin C blood
- Abstract
Background: Combining high-sensitivity cardiac troponin (hs-cTn) with estimated glomerular filtration rate and glucose within the Clinical Chemistry Score (CCS) could help in the assessment of patients with suspected acute myocardial infarction (AMI)., Methods: In patients presenting with suspected AMI to the emergency department, we aimed to externally validate the performance of the CCS in a prospective international multicenter study and to directly compare the diagnostic and prognostic performance of the CCS with hs-cTnT and hs-cTnI baseline levels alone using a single cut-off approach. The diagnostic endpoint was diagnostic accuracy for AMI as centrally adjudicated by two independent cardiologists including cardiac imaging and serial hs-cTnT/I measurements. The prognostic endpoint was 30-day AMI or death., Results: AMI was the final diagnosis in 620/3827 patients (16.2%) adjudicated with hs-cTnT and 599 patients (15.7%) adjudicated with hs-cTnI. The CCS resulted in high diagnostic accuracy for AMI and prognostic accuracy for 30-days AMI/death as quantified by the area under the receiver-operating characteristic curve (AUC), using hs-cTnT 0.90 (95%CI 0.89-0.91) and 0.89 (95%CI 0.88-0.90), using hs-cTnI 0.91 (95%Cl 0.90-0.92) and 0.90 (95%CI 0.89-0.91) respectively. E.g. a CCS of 0 points resulted in a sensitivity of 99.8% (95%CI 99.1-100%) for rule-out of index AMI and 99.5% (95%CI 98.5-100%) for AMI/death at 30 days for hs-cTnT and 99.8% (95%CI 98.9-100%) and 99.6% (95%CI 98.6-100%) using hs-cTnI. Overall, the single hs-cTnT/I measurement approach provided comparable diagnostic (sensitivity 99.5-99.7%) and prognostic (sensitivity 98.9-99.5%) performance versus the CCS., Interpretation: The CCS provided high diagnostic and prognostic performance also in this independent large validation cohort. A single hs-cTnT/I measurement approach for rule-out MI yielded similar estimates., (Copyright © 2021 The Canadian Society of Clinical Chemists. Published by Elsevier Inc. All rights reserved.)
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- 2021
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41. [Saddle Bruise From Mountainbiking - Just a Trifle?]
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Eube Pusch N, Lütschg J, Döschner C, and Keller DI
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- Humans, Retrospective Studies, Risk Factors, Contusions diagnosis, Contusions etiology, Fasciitis, Necrotizing, Soft Tissue Infections
- Abstract
Saddle Bruise From Mountainbiking - Just a Trifle? Abstract. Using the term of behavioral psychology, this review with case report illustrates how a necrotisizing fasciitis following a blunt soft tissue trauma got misinterpreted as pulmonary embolism. In addition to the most important red flags we describe the typical course of disease and provide relevant tools to differentiate upatient between minor ailments and this life-threatening disease on first presentation of the patient.
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- 2021
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42. Editorial: Emergency in Psychiatry-The Various Facets of Behavioral Emergencies, Crises, and Suicidality.
- Author
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Hennings JM, Keller DI, Slankamenac K, and Wetter TC
- Abstract
Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
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- 2021
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43. High Efficacy of Saliva in Detecting SARS-CoV-2 by RT-PCR in Adults and Children.
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Huber M, Schreiber PW, Scheier T, Audigé A, Buonomano R, Rudiger A, Braun DL, Eich G, Keller DI, Hasse B, Böni J, Berger C, Günthard HF, Manrique A, and Trkola A
- Abstract
Rising demands for repetitive SARS-CoV-2 screens and mass testing necessitate additional test strategies. Saliva may serve as an alternative to nasopharyngeal swab (NPS) as its collection is simple, non-invasive and amenable for mass- and home testing, but its rigorous validation, particularly in children, is missing. We conducted a large-scale head-to-head comparison of SARS-CoV-2 detection by RT-PCR in saliva and NPS of 1270 adults and children reporting to outpatient test centers and an emergency unit. In total, 273 individuals were tested positive for SARS-CoV-2 in either NPS or saliva. SARS-CoV-2 RT-PCR results in the two specimens showed a high agreement (overall percent agreement = 97.8%). Despite lower viral loads in the saliva of both adults and children, detection of SARS-CoV-2 in saliva fared well compared to NPS (positive percent agreement = 92.5%). Importantly, in children, SARS-CoV-2 infections were more often detected in saliva than NPS (positive predictive value = 84.8%), underlining that NPS sampling in children can be challenging. The comprehensive parallel analysis reported here establishes saliva as a generally reliable specimen for the detection of SARS-CoV-2, with particular advantages for testing children, that is readily applicable to increase and facilitate repetitive and mass testing in adults and children.
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- 2021
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44. Diagnostic Performance of the European Society of Cardiology 0/1-h Algorithms in Late Presenters.
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Boeddinghaus J, Nestelberger T, Lopez-Ayala P, Koechlin L, Buechi M, Miro O, Keller DI, Gimenez MR, Twerenbold R, and Mueller C
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- Aged, Europe epidemiology, Female, Humans, Male, Middle Aged, Non-ST Elevated Myocardial Infarction physiopathology, Algorithms, Cardiology standards, Non-ST Elevated Myocardial Infarction diagnosis, Non-ST Elevated Myocardial Infarction epidemiology, Societies, Medical standards
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- 2021
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45. [CME/Answers: Elevated Creatine Kinase as a Diagnostic Parameter of Rhabdomyolysis].
- Author
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Hadzalic H, Herzog A, and Keller DI
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- Creatine Kinase, Diagnosis, Differential, Humans, Physical Examination, Acute Kidney Injury diagnosis, Rhabdomyolysis diagnosis, Rhabdomyolysis etiology
- Abstract
CME/Answers: Elevated Creatine Kinase as a Diagnostic Parameter of Rhabdomyolysis Abstract. Elevated CK values with or without symptoms require clarification in order to rule out possible secondary complications. Adequate hydrogenation, discontinuation of possibly triggering drugs and noxious agents, and close laboratory controls are decisive for the outcome. Acute rhabdomyolysis can have various causes, which can generally be classified as traumatic or atraumatic. In case of recurrent occurrence, genetic or autoimmunological diseases must also be excluded. In addition to a detailed anamnesis, physical examination, laboratory and urine tests, a variety of diagnostic methods are available, which should be used selectively. The aim of this work is to address possible clarification strategies, causes and differential diagnoses of an increase in creatine kinase and rhabdomyolysis. We illustrate these with a case.
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- 2021
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46. Extracorporeal life support as bridge to recovery in yew poisoning: case reports and literature review.
- Author
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Hermes-Laufer J, Meyer M, Rudiger A, Henze J, Enselmann K, Kupferschmidt H, Müller D, Herzog A, Bettex D, Keller DI, Krüger B, and Engeler J
- Subjects
- Adult, Arrhythmias, Cardiac, Female, Humans, Middle Aged, Shock, Cardiogenic diagnosis, Shock, Cardiogenic etiology, Shock, Cardiogenic therapy, Treatment Outcome, Extracorporeal Membrane Oxygenation, Plant Poisoning
- Abstract
Aims: This short communication aims to review the treatment of cardiogenic shock in patients with yew poisoning based on two case reports from our institution, focusing on the use of extracorporeal life support (ECLS)., Methods and Results: We report two cases of Taxus baccata poisoning treated with ECLS at our institution and review the literature based on a search in PubMed and Google Scholar on the topic of yew poisoning and ECLS. All cases were combined for analysis of demographics, ECLS therapy, and outcome. Case 1: A 35-year-old woman developed polymorphic ventricular tachycardia followed by cardiovascular arrest 5 h after orally ingesting a handful of yew needles. Successful resuscitation required ECLS for 72 h due to ongoing cardiac arrhythmias and cardiogenic shock. The patient left the hospital without neurological sequelae after 10 days. Case 2: A 30-year-old woman developed refractory cardiac arrhythmias and circulatory arrest. Resuscitation included ECLS for 71 h. T. baccata needles found by gastroscopy confirmed the diagnosis. The patient had no neurologic deficits and was transferred to psychiatry after 11 days., Review of the Literature: Nine case reports were found and analysed along with our two cases. Five out of the 11 (45%) patients were female. Median (range) age was 28 (19-46) years. T. baccata needles were ingested with a suicidal intention in all patients. Median (range) duration of ECLS was 70 h (24-120 h). Eight (73%) patients had full neurological recovery., Conclusions: Yew poisoning is a differential diagnosis in young psychiatric patients presenting with polymorphic ventricular tachycardia and cardiogenic shock. A characteristic cardiac contraction pattern in echocardiography may present a diagnostic clue. The early use of ECLS is a valuable bridge to recovery in most of these patients., (2020 The Authors. ESC Heart Failure published by John Wiley & Sons Ltd on behalf of the European Society of Cardiology.)
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- 2021
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47. Association of Previous Myocardial Infarction and Time to Presentation With Suspected Acute Myocardial Infarction.
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Troester V, Strebel I, Nestelberger T, Boeddinghaus J, Rubini Gimenez M, Lopez-Ayala P, Koechlin L, Glarner N, Prepoudis A, Miró Ò, Martin-Sanchez FJ, Kawecki D, Keller DI, Twerenbold R, and Mueller C
- Subjects
- Adult, Biomarkers blood, Early Medical Intervention methods, Early Medical Intervention standards, Europe epidemiology, Female, Health Knowledge, Attitudes, Practice, Help-Seeking Behavior, Humans, Male, Medical History Taking methods, Myocardial Revascularization methods, Myocardial Revascularization statistics & numerical data, Chest Pain blood, Chest Pain diagnosis, Chest Pain etiology, Chest Pain psychology, Delayed Diagnosis prevention & control, Myocardial Infarction blood, Myocardial Infarction diagnosis, Myocardial Infarction physiopathology, Myocardial Infarction psychology, Patient Education as Topic methods, Time-to-Treatment standards, Troponin I blood
- Published
- 2021
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48. Incidence, characteristics, determinants, and prognostic impact of recurrent syncope.
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Zimmermann T, du Fay de Lavallaz J, Nestelberger T, Gualandro DM, Strebel I, Badertscher P, Lopez-Ayala P, Widmer V, Freese M, Miró Ò, Christ M, Cullen L, Than M, Martin-Sanchez FJ, Di Somma S, Peacock WF, Keller DI, Boeddinghaus J, Twerenbold R, Wussler D, Koechlin L, Walter JE, Bürgler F, Geigy N, Kühne M, Reichlin T, Lohrmann J, and Mueller C
- Subjects
- Female, Humans, Incidence, Male, Prognosis, Proportional Hazards Models, Emergency Service, Hospital, Syncope diagnosis, Syncope epidemiology
- Abstract
Aims: The aim of this study is to characterize recurrent syncope, including sex-specific aspects, and its impact on death and major adverse cardiovascular events (MACE)., Methods and Results: We characterized recurrent syncope in a large international multicentre study, enrolling patients ≥40 years presenting to the emergency department (ED) with a syncopal event within the last 12 h. Syncope aetiology was centrally adjudicated by two independent cardiologists using all information becoming available during syncope work-up and long-term follow-up. Overall, 1790 patients were eligible for this analysis. Incidence of recurrent syncope was 20% [95% confidence interval (CI) 18-22%] within the first 24 months. Patients with an adjudicated final diagnosis of cardiac syncope (hazard ratio (HR) 1.50, 95% CI 1.11-2.01) or syncope with an unknown aetiology even after central adjudication (HR 2.11, 95% CI 1.54-2.89) had an increased risk for syncope recurrence. Least Absolute Shrinkage and Selection Operator regression fit on all patient information available early in the ED identified >3 previous episodes of syncope as the only independent predictor for recurrent syncope (HR 2.13, 95% CI 1.64-2.75). Recurrent syncope carried an increased risk for death (HR 1.87, 95% CI 1.26-2.77) and MACE (HR 2.69, 95% CI 2.02-3.59) over 24 months of follow-up, however, with a time-dependent effect. These findings were confirmed in a sensitivity analysis excluding patients with syncope recurrence or MACE before or during ED evaluation., Conclusion: Recurrence rates of syncope are substantial and vary depending on syncope aetiology. Importantly, recurrent syncope carries a time-dependent increased risk for death and MACE., Trial Registration: BAsel Syncope EvaLuation (BASEL IX, ClinicalTrials.gov registry number NCT01548352)., (Published on behalf of the European Society of Cardiology. All rights reserved. © The Author(s) 2020. For permissions, please email: journals.permissions@oup.com.)
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- 2020
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49. Diagnostic and prognostic value of ST-segment deviation scores in suspected acute myocardial infarction.
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Grimm K, Twerenbold R, Abaecherli R, Boeddinghaus J, Nestelberger T, Koechlin L, Troester V, Bourtzou A, Keller DI, Geigy N, Kozhuharov N, Wussler D, Wildi K, Hillinger P, Rubini Giménez M, Strebel I, Badertscher P, Puelacher C, du Fay de Lavallaz J, Osswald L, Morawiec B, Kawecki D, Miró Ò, Kühne M, Reichlin T, and Mueller C
- Subjects
- Aged, Disease Progression, Female, Follow-Up Studies, Humans, Male, Middle Aged, Prognosis, Prospective Studies, ROC Curve, ST Elevation Myocardial Infarction diagnosis, Electrocardiography, ST Elevation Myocardial Infarction physiopathology
- Abstract
Background: Recent advances in digital electrocardiography technology allow evaluating ST-segment deviations in all 12 leads as quantitative variables and calculating summed ST-segment deviation scores. The diagnostic and prognostic utility of summed ST-segment deviation scores is largely unknown., Methods: We aimed to explore the diagnostic and prognostic utility of the conventional and the modified ST-segment deviation score (Better Analysis of ST-segment Elevations and Depressions in a 12- Lead-ECG-Score (BASEL-Score): sum of elevations in the augmented voltage right - lead (aVR) plus absolute, unsigned ST-segment depressions in the remaining leads) in patients presenting with suspected non-ST-segment elevation myocardial infarction. The diagnostic endpoint was non-ST-segment elevation myocardial infarction, adjudicated by two independent cardiologists. Prognostic endpoint was mortality during two-year follow up., Results: Among 1330 patients, non-ST-segment elevation myocardial infarction was present in 200 (15%) patients. Diagnostic accuracy for non-ST-segment elevation myocardial infarction as quantified by the area under the receiver-operating-characteristics curve was significantly higher for the BASEL-Score (0.73; 95% confidence interval 0.69-0.77) as compared to the conventional ST-segment deviation score (0.53; 95% confidence interval 0.49-0.57, p <0.001). The BASEL-Score provided additional independent diagnostic value to dichotomous electrocardiogram variables (ST-segment depression, T-inversion, both p <0.001) and to high-sensitivity cardiac troponin ( p <0.001) as well as clinical judgment at 90 min ( p <0.001). Similarly, only the BASEL-Score proved to be an independent predictor of two year mortality., Conclusions: The modified ST-segment deviation score BASEL-Score focusing on ST-segment elevation in aVR and ST-segment depressions in the remaining leads provides incremental diagnostic and prognostic information.
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- 2020
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50. Effect of a Proposed Modification of the Type 1 and Type 2 Myocardial Infarction Definition on Incidence and Prognosis.
- Author
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Schoepfer H, Nestelberger T, Boeddinghaus J, Twerenbold R, Lopez-Ayala P, Koechlin L, Wussler D, Zimmermann T, Miro O, Martín-Sánchez JF, Christ M, Keller DI, Rubini Gimenez M, and Mueller C
- Subjects
- Female, Humans, Incidence, Male, Myocardial Infarction diagnosis, Prognosis, Internationality, Myocardial Infarction classification, Myocardial Infarction epidemiology
- Published
- 2020
- Full Text
- View/download PDF
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