40 results on '"Dinh, TS"'
Search Results
2. Erstellung evidenzbasierter Gesundheitsinformationen für den Einsatz in der Hausarztpraxis: Chancen und Herausforderungen der Zielgruppenbeteiligung
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Marbach-Breitrück, E, Mibs, M, Dinh, TS, Hanf, M, Schütze, D, Engler, J, Seelig, M, Marbach-Breitrück, E, Mibs, M, Dinh, TS, Hanf, M, Schütze, D, Engler, J, and Seelig, M
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- 2024
3. Informationssituation von älteren Patient:innen in der Hausarztpraxis - Erfahrungen zum Einsatz der Erhebungsinstrumente im Pilotprojekt HYPERION-TransCare
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Klein, AA, Dinh, TS, Hanf, M, Brosse, F, Petermann, J, Piller, S, Schulz-Rothe, S, Mergenthal, K, Engler, J, Seidling, HM, Klasing, S, Timmesfeld, N, Yousefi, B, van den Akker, M, Voigt, K, Klein, AA, Dinh, TS, Hanf, M, Brosse, F, Petermann, J, Piller, S, Schulz-Rothe, S, Mergenthal, K, Engler, J, Seidling, HM, Klasing, S, Timmesfeld, N, Yousefi, B, van den Akker, M, and Voigt, K
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- 2023
4. Polypharmacy in older multimorbid patients: Agreement between GP-reported and patient-reported drugs
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Schäfer, L, Paulitsch, M, Hanf, M, Dinh, TS, Klein, AA, Klasing, S, Seidling, HM, Voigt, K, van den Akker, M, Schäfer, L, Paulitsch, M, Hanf, M, Dinh, TS, Klein, AA, Klasing, S, Seidling, HM, Voigt, K, and van den Akker, M
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- 2023
5. Machbarkeit der Outcomemessungen der Pilotstudie HYPERION-TransCare zur Verbesserung des Informationsmanagements bei älteren Patient*innen mit Multimorbidität und Multimedikation in Hausarztpraxen
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Klein, AA, Dinh, TS, Hanf, M, Brosse, F, Petermann, J, Piller, S, Schulz-Rothe, S, Mergenthal, K, Engler, J, Seidling, H, Klasing, S, Timmesfeld, N, Yousefi, B, van den Akker, M, Voigt, K, Klein, AA, Dinh, TS, Hanf, M, Brosse, F, Petermann, J, Piller, S, Schulz-Rothe, S, Mergenthal, K, Engler, J, Seidling, H, Klasing, S, Timmesfeld, N, Yousefi, B, van den Akker, M, and Voigt, K
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- 2023
6. Digitale Workshops zur aktiven Beteiligung von Patient*innen und Versorger*innen an der Entwicklung einer Intervention zum Management von Polypharmazie: Ergebnisse einer mixed-methods Evaluation und methodische Schlussfolgerungen
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Engler, J, Brosse, F, Dinh, TS, Klein, A, Brückle, S, Petermann, J, Muth, C, Mergenthal, K, van den Akker, M, and Voigt, K
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ddc: 610 ,Medicine and health - Abstract
Hintergrund und Stand (inter)nationaler Forschung: Zu Beginn der Coronapandemie haben einige Forscher*innenteams den Einbezug von Patient*innen und anderen Stakeholdern in die Forschung aufgrund der Annahme, dass Patient*innen an digitalen Partizipationsformaten nicht interessiert sind [zum vollständigen Text gelangen Sie über die oben angegebene URL]
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- 2022
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7. Präventive Maßnahmen zur Vermeidung negativer Folgen für Menschen mit Multimorbidität im mittleren Alter
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Dinh, TS, Brünn, R, González-González, AI, and van den Akker, M
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ddc: 610 ,Medicine and health - Abstract
Hintergrund: Menschen mit Multimorbidität erfahren eine sehr komplexe Versorgung, die in weite Teile ihres Familien- und Freizeitlebens sowie in ihre Arbeitsrealität einwirkt. Obwohl das Phänomen der Multimorbidität häufig mit hohem Alter in Verbindung gebracht wird, ist die [zum vollständigen Text gelangen Sie über die oben angegebene URL]
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- 2022
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8. Everyday lives of middle-aged persons living with multimorbidity: a mixed-methods systematic review
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González-González, AI, Brünn, R, Nothacker, J, Nury, E, Schwarz, C, Dinh, TS, Brueckle, MS, Dieckelmann, M, Müller, BS, van den Akker, M, González-González, AI, Brünn, R, Nothacker, J, Nury, E, Schwarz, C, Dinh, TS, Brueckle, MS, Dieckelmann, M, Müller, BS, and van den Akker, M
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- 2022
9. Choosing wisely: unerwünschte Wirkungen bei der Verschreibung von psychotropen, sedierenden und anticholinergen Medikamenten und deren Zusammenhang mit bestimmten Patientenmerkmalen in der Hausarztpraxis
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Puzhko, S, Muth, C, Brueckle, MS, Dinh, TS, Dreischulte, T, van den Akker, M, Puzhko, S, Muth, C, Brueckle, MS, Dinh, TS, Dreischulte, T, and van den Akker, M
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- 2022
10. Quantifizierung des prädiktiven Wertes von Instrumenten zur Messung von anticholinerger Last und Symptomen zur Vorhersage von Stürzen bei älteren Patient:innen mit Multimedikation
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Dinh, TS, Meid, AD, Rudolf, H, Brückle, MS, González-González, AI, Bencheva, V, Gogolin, M, Snell, KIE, Elders, PJM, Thürmann, P, Donner-Banzhoff, N, Blom, JW, van den Akker, M, Gerlach, FM, Harder, S, Thiem, U, Glasziou, P, Haefeli, WE, Muth, C, Dinh, TS, Meid, AD, Rudolf, H, Brückle, MS, González-González, AI, Bencheva, V, Gogolin, M, Snell, KIE, Elders, PJM, Thürmann, P, Donner-Banzhoff, N, Blom, JW, van den Akker, M, Gerlach, FM, Harder, S, Thiem, U, Glasziou, P, Haefeli, WE, and Muth, C
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- 2022
11. Unerwünschte anticholinerge Arzneimittelwirkungen von Amitriptylin - ein systematisches Multi-Indikations-Review und Meta-Analyse
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Brueckle, MS, Thomas, E, Seide, S, Pilz, M, Gonza, AI, Dinh, TS, Gerlach, FM, Harder, S, Glasziou, P, Muth, C, Brueckle, MS, Thomas, E, Seide, S, Pilz, M, Gonza, AI, Dinh, TS, Gerlach, FM, Harder, S, Glasziou, P, and Muth, C
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- 2022
12. Multimedikation bei älteren Menschen an der Schnittstelle ambulanter und stationärer Versorgung – Studienprotokoll der Interventionsentwicklung der HYPERION-Studie
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Brueckle, MS, Dinh, TS, Klein, AA, Rietschel, L, Mergenthal, K, Engler, J, Schulz-Rothe, S, Brosse, F, Petermann, J, Voigt, K, and van den Akker, M
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ddc: 610 ,Medicine and health - Abstract
Hintergrund: Ältere Menschen mit Multimedikation und komplexen Versorgungsbedürfnissen stellen eine zentrale Herausforderung für das Gesundheitssystem dar. Insbesondere bei Krankenhauseinweisung und -entlassung entstehen Versorgungsprobleme durch mangelnde Informationskontinuität. [zum vollständigen Text gelangen Sie über die oben angegebene URL]
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- 2021
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13. Hausärztliche Leitlinie ‚Multimedikation‘ – Empfehlungen zum Umgang mit Multimedikation bei Erwachsenen und geriatrischen Patient*innen (S3-LL, AWMF-Register-Nr.: 053 – 043)
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Brueckle, MS, Dinh, TS, Harder, S, Fessler, J, Seffrin, J, Vetter, G, Graafen, S, Grenz, S, Beyer, M, Braun, M, Meissl, S, Reincke, S, Schubert, I, and Muth, C
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ddc: 610 ,Medicine and health - Abstract
Hintergrund: 2013 erschien die erste evidenzbasierte Leitlinie (AWMF-S2e-Niveau) „Multimedikation“. Im Rahmen der vorgesehenen Aktualisierung wurde zugleich ein Upgrade auf AWMF S3 Niveau geplant und im Rahmen des EVITA-Projekts (Evidenzbasiertes Multimedikations-Programm mit Implementierung [zum vollständigen Text gelangen Sie über die oben angegebene URL]
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- 2021
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14. Medikamentenbezogener Informationsfluss bei Krankenhauseinweisungen und -entlassungen – Schwierigkeiten und Lösungsansätze aus Sicht von Beteiligten
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Klein, AA, Dinh, TS, Rietschel, L, Brueckle, MS, Brosse, F, Petermann, J, Schulz-Rothe, S, Mergenthal, K, Engler, J, van den Akker, M, and Voigt, K
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ddc: 610 ,Medicine and health - Abstract
Hintergrund: An der Schnittstelle zwischen ambulanter und stationärer Versorgung kommt es vor allem bei Patient*innen mit komplexen Versorgungsbedürfnissen häufig zu einer unzureichenden Informationskontinuität bzgl. der Medikation. Dies kann zu vermeidbaren Schwierigkeiten [zum vollständigen Text gelangen Sie über die oben angegebene URL]
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- 2021
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15. End-of-life care preferences of older patients with multimorbidity: a mixed-methods systematic review
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Gonzalez-Gonzalez, AI, Schmucker, C, Nothacker, J, Nury, E, Dinh, TS, Brueckle, MS, Blom, JW, Röttger, K, Wegwarth, O, Hoffmann, T, Gerlach, FM, Straus, S, van den Akker, M, Meerpohl, JJ, and Muth, C
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ddc: 610 ,610 Medical sciences ,Medicine - Abstract
Background/research question: The unpredictable disease trajectories of older patients with multimorbidity require earlier patient-clinician communication regarding preferences for end-of-life (EoL) care. To offer support to clinicians and assist this patient population, we aimed to conduct a mixed-methods[for full text, please go to the a.m. URL], Who cares? – EbM und Transformation im Gesundheitswesen; 22. Jahrestagung des Deutschen Netzwerks Evidenzbasierte Medizin
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- 2021
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16. Are Anticholinergic Symptoms a Risk Factor for Falls in Older General Practice Patients With Polypharmacy? Study Protocol for the Development and Validation of a Prognostic Model
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Dinh, TS, González-González, AI, Meid, AD, Snell, KIE, Rudolf, H, Brueckle, M-S, Blom, JW, Thiem, U, Trampisch, H-J, Elders, PJM, Donner-Banzhoff, N, Gerlach, FM, Harder, S, van den Akker, M, Glasziou, PP, Haefeli, WE, Muth, C, General practice, APH - Health Behaviors & Chronic Diseases, and ACS - Diabetes & metabolism
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RM ,EXTERNAL VALIDATION ,DRUG BURDEN INDEX ,anticholinergic burden ,PEOPLE ,Methods ,Pharmacology (medical) ,ddc:610 ,Pharmacology & Pharmacy ,LOAD ,polypharmacy ,accidental falls [MeSH] ,SCALE ,ASSOCIATIONS ,Pharmacology ,general practice ,OUTCOMES ,Science & Technology ,MEDICATIONS ,ADULTS ,multimorbidity [MeSH] ,INJURIOUS FALLS ,prediction model ,prognosis research ,aged [MesH] ,Life Sciences & Biomedicine - Abstract
Background: Cumulative anticholinergic exposure, also known as anticholinergic burden, is associated with a variety of adverse outcomes. However, studies show that anticholinergic effects tend to be underestimated by prescribers, and anticholinergics are the most frequently prescribed potentially inappropriate medication in older patients. The grading systems and drugs included in existing scales to quantify anticholinergic burden differ considerably and do not adequately account for patients’ susceptibility to medications. Furthermore, their ability to link anticholinergic burden with adverse outcomes such as falls is unclear. This study aims to develop a prognostic model that predicts falls in older general practice patients, to assess the performance of several anticholinergic burden scales, and to quantify the added predictive value of anticholinergic symptoms in this context. Methods: Data from two cluster-randomized controlled trials investigating medication optimization in older general practice patients in Germany will be used. One trial (RIME, n = 1,197) will be used for the model development and the other trial (PRIMUM, n = 502) will be used to externally validate the model. A priori, candidate predictors will be selected based on a literature search, predictor availability, and clinical reasoning. Candidate predictors will include socio-demographics (e.g. age, sex), morbidity (e.g. single conditions), medication (e.g. polypharmacy, anticholinergic burden as defined by scales), and well-being (e.g. quality of life, physical function). A prognostic model including sociodemographic and lifestyle-related factors, as well as variables on morbidity, medication, health status, and well-being, will be developed, whereby the prognostic value of extending the model to include additional patient-reported symptoms will be also assessed. Logistic regression will be used for the binary outcome, which will be defined as “no falls” vs. “≥1 fall” within six months of baseline, as reported in patient interviews. Discussion: As the ability of different anticholinergic burden scales to predict falls in older patients is unclear, this study may provide insights into their relative importance as well as into the overall contribution of anticholinergic symptoms and other patient characteristics. The results may support general practitioners in their clinical decision-making and in prescribing fewer medications with anticholinergic properties.
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- 2021
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17. Wie kann ein Versorgungsprogramm für hausärztliche Patient*innen mit Multimedikation entwickelt und im deutschen Versorgungskontext implementiert werden? Ergebnisse einer qualitativen Stakeholder-Analyse
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Dinh, TS, Brückle, MS, González-González, AI, Marschall, U, Gerlach, FM, van den Akker, M, Muth, C, Dinh, TS, Brückle, MS, González-González, AI, Marschall, U, Gerlach, FM, van den Akker, M, and Muth, C
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- 2021
18. Everyday lives of middle-aged persons living with multimorbidity: protocol of a mixed-methods systematic review.
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González-González, AI, Brünn, R, Nothacker, J, Dinh, TS, Brueckle, MS, Dieckelmann, M, Müller, B, van den Akker, M, González-González, AI, Brünn, R, Nothacker, J, Dinh, TS, Brueckle, MS, Dieckelmann, M, Müller, B, and van den Akker, M
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- 2021
19. Polypharmacy in Older Patients with Multimorbidity: The Agreement Between Patient and General Practitioner-Reported Drugs Observed in a Pilot cRCT.
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Schäfer L, Paulitsch M, Hanf M, Dinh TS, Klein AA, Klasing S, Seidling H, Voigt K, and van den Akker M
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- Humans, Aged, Male, Female, Pilot Projects, Aged, 80 and over, Polypharmacy, Multimorbidity, General Practitioners
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Polypharmacy (≥5 drugs) increases the risk of discrepancies between patient- and general practitioner (GP)-reported drugs, leading to adverse outcomes. This explorative analysis assesses the agreement between patient- and GP-reported drugs under the influence of a paper-based patient portfolio in a pilot cluster randomized controlled trial (cRCT). Complete data were available for 68 patients aged 65 or older (26 were female), with multimorbidity, polypharmacy, and at least one hospitalization in the past year. Agreement was assessed for drug name and strength level. Differences between the intervention and control group (IG/CG) and comparisons between two time points (six-month interval) stratified according to gender were analyzed using Wilcoxon and Mann-Whitney U tests (α = 5%). To evaluate the reasons for discrepancies, the agreement of active pharmaceutical ingredients (APIs) and anatomical therapeutic chemical (ATC) groups was analyzed. At baseline, the agreement was 72.1% for the IG and 73.9% for the CG. Inclusion of the reported drug strength reduced the agreement in both groups (IG 66.7%, CG 60.0%). Agreement for the IG decreased statistically significantly after six months (-5.4%). ATC groups B, C, and H had the highest agreement, while N, R, and Z had the lowest. Large discrepancies in the drugs reported, due to the APIs and the corresponding ATC group, were observed.
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- 2024
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20. Informational continuity of medication management in transitions of care: Qualitative interviews with stakeholders from the HYPERION-TransCare study.
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Dinh TS, Hanf M, Klein AA, Brueckle MS, Rietschel L, Petermann J, Brosse F, Schulz-Rothe S, Klasing S, Muth C, Seidling H, Engler J, Mergenthal K, Voigt K, and van den Akker M
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- Humans, Health Personnel, Communication, Attitude of Health Personnel, Qualitative Research, Medication Therapy Management, Hospitalization
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Background: The transition of patients between inpatient and outpatient care can lead to adverse events and medication-related problems due to medication and communication errors, such as medication discontinuation, the frequency of (re-)hospitalizations, and increased morbidity and mortality. Older patients with multimorbidity and polypharmacy are particularly at high risk during transitions of care. Previous research highlighted the need for interventions to improve transitions of care in order to support information continuity, coordination, and communication. The HYPERION-TransCare project aims to improve the continuity of medication management for older patients during transitions of care., Methods and Findings: Using a qualitative design, 32 expert interviews were conducted to explore the perspectives of key stakeholders, which included healthcare professionals, patients and one informal caregiver, on transitions of care. Interviews were conducted between October 2020 and January 2021, transcribed verbatim and analyzed using content analysis. We narratively summarized four main topics (stakeholders' tasks, challenges, ideas for solutions and best practice examples, and patient-related factors) and mapped them in a patient journey map. Lacking or incomplete information on patients' medication and health conditions, inappropriate communication and collaboration between healthcare providers within and across settings, and insufficient digital support limit the continuity of medication management., Conclusions: The study confirms that medication management during transitions of care is a complex process that can be compromised by a variety of factors. Legal requirements and standardized processes are urgently needed to ensure adequate exchange of information and organization of medication management before, during and after hospital admissions. Despite the numerous barriers identified, the findings indicate that involved healthcare professionals from both the inpatient and outpatient care settings have a common understanding., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2024 Dinh et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
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- 2024
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21. How do middle-aged patients and their healthcare providers manage multimorbidity? Results of a qualitative study.
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Dinh TS, Brünn R, Schwarz C, Brueckle MS, Dieckelmann M, González González AI, and van den Akker M
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- Middle Aged, Humans, Outpatients, Qualitative Research, Health Personnel, Activities of Daily Living, Multimorbidity
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Background: It is particularly difficult for healthcare providers to deliver optimal medical care to multimorbid middle-aged persons because patients' professional activities, family lives, and other everyday responsibilities hinder them from making necessary lifestyle changes. Our aim was to find out how patients and healthcare providers view and manage the problems of dealing with multimorbidity in middle age., Methods and Findings: This qualitative study consisted of three steps. First, we conducted semi-structured in-depth interviews with 15 purposively sampled middle-aged persons living with multimorbidity to explore the experiences of care in the context of their leisure time, family lives, and work. Second, further individual interviews were carried out to find out the views of 14 healthcare providers. Third, the results of the interviews with patients and healthcare providers were presented to and discussed with four healthcare providers at an interprofessional workshop. Interview data was coded using an inductive-deductive approach and analyzed using content analysis. While patients reflected on challenges in several life domains, healthcare providers differentiated between levels of challenges. Both shared recommendations for better care including i) helping patients cope, ii) providing relief in activities of daily living, iii) continuity of care, iv) interprofessional cooperation, v) health promotion/prevention, vi) expansion of health services and vii) general system-level changes. Furthermore, the healthcare provider workshop highlighted the importance of increasing patient-centeredness, reducing complexity through a care coordinator and promoting interprofessional cooperation/networking., Conclusions: To further improve the care of patients living with multimorbidity, barriers to managing multiple chronic conditions and facilitators to navigating complex care scenarios should be explored not only for people beyond working age, but for individuals in their mid-life specifically., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2023 Dinh et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
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- 2023
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22. Implementation and evaluation of a complex intervention to improve information availability at the interface between inpatient and outpatient care in older patients with multimorbidity and polypharmacy (HYPERION-TransCare) - study protocol for a pilot and feasibility cluster-randomized controlled trial in general practice in Germany.
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Klein AA, Petermann J, Brosse F, Piller S, Kramer M, Hanf M, Dinh TS, Schulz-Rothe S, Engler J, Mergenthal K, Seidling HM, Klasing S, Timmesfeld N, van den Akker M, and Voigt K
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Background: Despite attempts to improve the cross-sectoral flow of information, difficulties remain in routine healthcare. The resulting negative impact on continuity of care is often associated with poor health outcomes, especially in older patients. Our intervention aims to increase information availability with respect to medications and health conditions at the interface between inpatient and outpatient care and to contribute towards improving the quality of care in older patients. This pilot study focuses on feasibility and implementability., Methods: The idea of the complex intervention has been developed in a previous study. This intervention will be tested in a prospective, multicenter, cluster-randomized (via web tool), controlled pilot trial with two parallel study arms (intervention and control group). The pilot study will be conducted in 20 general practices in Hesse and Saxony (Germany) and include 200 patients (≥ 65 years of age with multimorbidity and polypharmacy) recruited by the practices. Practice staff and patients will be blinded. We will use qualitative and quantitative methods to assess the feasibility and implementability of the intervention and the study design in a process evaluation covering topics ranging from expectations to experiences. In addition, the feasibility of proposed outcome parameters for the future definitive trial will be explored. The composite endpoint will include health-related patient outcomes (hospitalization, falls, and mortality using, e.g., the FIMA questionnaire), and we will assess information on medications (SIMS questionnaire), symptoms and side effects of the medication (pro-CTCAE questionnaire), and health literacy (HLQ questionnaire). Data will be collected at study begin (baseline) and after 6 months. Furthermore, the study will include surveys and interviews with patients, general practitioners, and healthcare assistants., Discussion: The intervention was developed using a participatory approach involving stakeholders and patients. It aims to empower general practice teams as they provide patient-centered care and play a key role in the coordination and continuity of care. We aim to encourage patients to adopt an active role in their health care. Overall, we want to increase the availability of health-related information for patients and healthcare providers. The results of the pilot study will be used in the design and implementation of the future definitive trial., Trial Registration: The study was registered in DRKS-German Clinical Trials Register: registration number DRKS00027649 (date: 19 January 2022). Date and version identifier 10.07.2023; Version 1.3., (© 2023. BioMed Central Ltd., part of Springer Nature.)
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- 2023
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23. Amitriptyline's anticholinergic adverse drug reactions-A systematic multiple-indication review and meta-analysis.
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Brueckle MS, Thomas ET, Seide SE, Pilz M, Gonzalez-Gonzalez AI, Dinh TS, Gerlach FM, Harder S, Glasziou PP, and Muth C
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- Adult, Aged, Humans, Amitriptyline therapeutic use, Cholinergic Antagonists
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Background: Half the US population uses drugs with anticholinergic properties. Their potential harms may outweigh their benefits. Amitriptyline is among the most frequently prescribed anticholinergic medicinal products, is used for multiple indications, and rated as strongly anticholinergic. Our objective was to explore and quantify (anticholinergic) adverse drug reactions (ADRs) in patients taking amitriptyline vs. placebo in randomized controlled trials (RCTs) involving adults and healthy individuals., Methods: We searched electronic databases from their inception until 09/2022, and clinical trial registries from their inception until 09/2022. We also performed manual reference searches. Two independent reviewers selected RCTs with ≥100 participants of ≥18 years, that compared amitriptyline (taken orally) versus placebo for all indications. No language restrictions were applied. One reviewer extracted study data, ADRs, and assessed study quality, which two others verified. The primary outcome was frequency of anticholinergic ADRs as a binary outcome (absolute number of patients with/without anticholinergic ADRs) in amitriptyline vs. placebo groups., Results: Twenty-three RCTs (mean dosage 5mg to 300mg amitriptyline/day) and 4217 patients (mean age 40.3 years) were included. The most frequently reported anticholinergic ADRs were dry mouth, drowsiness, somnolence, sedation, fatigue, constitutional, and unspecific anticholinergic ADRs. Random-effects meta-analyses showed anticholinergic ADRs had a higher odd's ratio for amitriptyline versus placebo (OR = 7.41; [95% CI, 4.54 to 12.12]). Non-anticholinergic ADRs were as frequent for amitriptyline as placebo. Meta-regression analysis showed anticholinergic ADRs were not dose-dependent., Discussion: The large OR in our analysis shows that ADRs indicative of anticholinergic activities can be attributed to amitriptyline. The low average age of participants in our study may limit the generalizability of the frequency of anticholinergic ADRs in older patients. A lack of dose-dependency may reflect limited reporting of the daily dosage when the ADRs occurred. The exclusion of small studies (<100 participants) decreased heterogeneity between studies, but may also have reduced our ability to detect rare events. Future studies should focus on older people, as they are more susceptible to anticholinergic ADRs., Registration: PROSPERO: CRD42020111970., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2023 Brueckle et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
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- 2023
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24. Anticholinergic burden measures, symptoms, and fall-associated risk in older adults with polypharmacy: Development and validation of a prognostic model.
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Dinh TS, Meid AD, Rudolf H, Brueckle MS, González-González AI, Bencheva V, Gogolin M, Snell KIE, Elders PJM, Thuermann PA, Donner-Banzhoff N, Blom JW, van den Akker M, Gerlach FM, Harder S, Thiem U, Glasziou PP, Haefeli WE, and Muth C
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- Humans, Aged, Prognosis, Polypharmacy, Vertigo, Dizziness chemically induced, Cholinergic Antagonists adverse effects
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Background: Anticholinergic burden has been associated with adverse outcomes such as falls. To date, no gold standard measure has been identified to assess anticholinergic burden, and no conclusion has been drawn on which of the different measure algorithms best predicts falls in older patients from general practice. This study compared the ability of five measures of anticholinergic burden to predict falls. To account for patients' individual susceptibility to medications, the added predictive value of typical anticholinergic symptoms was further quantified in this context., Methods and Findings: To predict falls, models were developed and validated based on logistic regression models created using data from two German cluster-randomized controlled trials. The outcome was defined as "≥ 1 fall" vs. "no fall" within a 6-month follow-up period. Data from the RIME study (n = 1,197) were used in model development, and from PRIMUM (n = 502) for external validation. The models were developed step-wise in order to quantify the predictive ability of anticholinergic burden measures, and anticholinergic symptoms. In the development set, 1,015 patients had complete data and 188 (18.5%) experienced ≥ 1 fall within the 6-month follow-up period. The overall predictive value of the five anticholinergic measures was limited, with neither the employed anticholinergic variable (binary / count / burden), nor dose-dependent or dose-independent measures differing significantly in their ability to predict falls. The highest c-statistic was obtained using the German Anticholinergic Burden Score (0.73), whereby the optimism-corrected c-statistic was 0.71 after interval validation using bootstrapping and 0.63 in the external validation. Previous falls and dizziness / vertigo had the strongest prognostic value in all models., Conclusions: The ability of anticholinergic burden measures to predict falls does not appear to differ significantly, and the added value they contribute to risk classification in fall-prediction models is limited. Previous falls and dizziness / vertigo contributed most to model performance., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2023 Dinh et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
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- 2023
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25. Digital participatory workshops with patients and health professionals to develop an intervention for the management of polypharmacy: results from a mixed-methods evaluation and methodological conclusions.
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Engler J, Brosse F, Dinh TS, Klein AA, Brueckle MS, Petermann J, Muth C, Mergenthal K, van den Akker M, and Voigt K
- Abstract
Background: In the COVID-19 pandemic, numerous researchers postponed their patient and public involvement (PPI) activities. This was mainly due to assumptions on patients' willingness and skills to participate digitally. In fact, digital PPI workshops differ from in-person meetings as some forms of non-verbal cues and body language may be missing and technical barriers may exist. Within our project HYPERION-TransCare we adapted our PPI workshop series for intervention development to a digital format and assessed whether these digital workshops were feasible for patients, health care professionals and researchers., Methods: We used a digital meeting tool that included communication via audio, video and chat. Discussions were documented simultaneously on a digital white board. Technical support was provided via phone and chat during the workshops and with a technical introduction workshop in advance. The workshop evaluation encompassed observation protocols, participants' feedback via chat after each workshop on their chance to speak and the usability of the digital tools, and telephone interviews on patients' and health professionals' experiences after the end of the workshop series., Results: Observation protocols showed an active role of moderators in verbally encouraging every participant to get involved. Technical challenges occurred, but were in most cases immediately addressed and solved. Participants median rating of their chance to speak and the usability of the digital tool was "very good". In the evaluation interviews participants reported a change of perspective and mutual understanding as a main benefit from the PPI workshops and described the atmosphere as inclusive and on equal footing. Benefits of the digital format such as overcoming geographical distance, saving time and combining workshop participation with professional or childcare obligations were reported. Technical support was stressed as a pre-condition for getting actively involved in digital PPI., Conclusions: Digital formats using different didactic and documentation techniques, accompanied by technical support, can foster active patient and public involvement. The advantages of digital PPI formats such as geographical flexibility and saving time for participants as well as the opportunity to prepare and hold workshops in geographically stretched research teams persists beyond the pandemic and may in some cases outweigh the advantages of in-person communication., (© 2022. The Author(s).)
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- 2022
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26. Stakeholder Perspectives on the Development and Implementation of a Polypharmacy Management Program in Germany: Results of a Qualitative Study.
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Dinh TS, Brueckle MS, González-González AI, Witte J, van den Akker M, Gerlach FM, Muth C, and On Behalf Of The Evita Study Group
- Abstract
Structured management programs have been developed for single diseases but rarely for patients with multiple medications. We conducted a qualitative study to investigate the views of stakeholders on the development and implementation of a polypharmacy management program in Germany. Overall, we interviewed ten experts in the fields of health policy and clinical practice. Using content analysis, we identified inclusion criteria for the selection of suitable patients, the individual elements that should make up such a program, healthcare providers and stakeholders that should be involved, and factors that may support or hinder the program's implementation. All stakeholders were well aware of polypharmacy-related risks and challenges, as well as the urgent need for change. Intervention strategies should address all levels of care and include all concerned patients, caregivers, healthcare providers and stakeholders, and involved parties should agree on a joint approach.
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- 2022
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27. Development of an intervention to improve informational continuity of care in older patients with polypharmacy at the interface between general practice and hospital care: protocol for a participatory qualitative study in Germany.
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Brueckle MS, Dinh TS, Klein AA, Rietschel L, Petermann J, Brosse F, Schulz-Rothe S, Gonzalez-Gonzalez AI, Kramer M, Engler J, Mergenthal K, Muth C, Voigt K, and van den Akker M
- Subjects
- Aged, Hospitals, Humans, Patient Discharge, Pilot Projects, General Practice, Polypharmacy
- Abstract
Introduction: Older patients with multimorbidity, polypharmacy and related complex care needs represent a growing proportion of the population and a challenge for healthcare systems. Particularly in transitional care (hospital admission and hospital discharge), medical errors, inappropriate treatment, patient concerns and lack of confidence in healthcare are major problems that may arise from a lack of information continuity. The aim of this study is to develop an intervention to improve informational continuity of care at the interface between general practice and hospital care., Methods and Analysis: A qualitative approach will be used to develop our participatory intervention. Overall, 32 semistructured interviews with relevant stakeholders will be conducted and analysed. The stakeholders will include healthcare professionals from the outpatient setting (general practitioners, healthcare assistants, ambulatory care nurses) and the inpatient setting (clinical doctors, nurses, pharmacists, clinical information scientists) as well as patients and informal caregivers. At a series of workshops based on the results of the stakeholder analyses, we aim to develop a participatory intervention that will then be implemented in a subsequent pilot study. The same stakeholder groups will be invited for participation in the workshops., Ethics and Dissemination: Ethical approval for this study was waived by the Ethics Committee of Goethe University Frankfurt because of the nature of the proposed study. Written informed consent will be obtained from all study participants prior to participation. Results will be tested in a pilot study and disseminated at (inter)national conferences and via publication in peer-reviewed journals., Trial Registation Number: Clinical Trials Register: registration number DRKS00027649., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 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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28. Progression of liver fibrosis and associated factors among chronic hepatitis B patients at a general hospital in Northern Vietnam.
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Luu NM, Nguyen TKT, Vu TT, Dinh TS, Luu NH, Do TTT, Nguyen VS, Ha TBV, Nguyen DC, Tran TH, Phung TTH, Duong XP, Khuong QL, Nguyen TTT, Saw YM, Hoang TNA, and Nguyen TN
- Subjects
- Aspartate Aminotransferases, Bayes Theorem, Biomarkers, Hospitals, General, Humans, Liver Cirrhosis epidemiology, Longitudinal Studies, Platelet Count, Retrospective Studies, Severity of Illness Index, Vietnam epidemiology, Hepatitis B, Chronic diagnosis, Hepatitis B, Chronic drug therapy, Hepatitis B, Chronic epidemiology
- Abstract
Evaluation of liver fibrosis is necessary to make the therapeutic decision and assess the prognosis of CHB patients. The current study aimed to describe the progression and identify some influencing factors in patients with chronic hepatitis B at a General Hospital in Northern Vietnam. The longitudinal study included 55 eligible subjects diagnosed Hepatitis-B-virus. Dependent variable was the aspartate aminotransferase/platelet ratio index and we collected some demographic variables and disease related and behaviour variables. Bayesian Model Averaging was used to select variables into model. Mixed-effect linear models were used to evaluate the change of the aspartate aminotransferase/platelet ratio index over time and identify related factors. the aspartate aminotransferase/platelet ratio index differences between examinations, age of participants, working status were statistically significant. This pattern indicated that the average the aspartate aminotransferase/platelet ratio index of the population decreased by 0.005 (95% CI=-0.009; -0.001) after each patient's visit, and increased by 0.013 if the patient's age increased by 1 year (95% CI=0.005; 0.0219). For non-working patients, the aspartate aminotransferase/platelet ratio index was lower, coefficient was -0.054 (95% CI=-0.108; 0.001). Other variables such as gender, education level, time for disease detection, drinking tea, alcohol consumption, forgetting to take medicine and the aspartate aminotransferase/platelet ratio index were not significantly different. The study showed that the majority of study subjects had average the aspartate aminotransferase/platelet ratio index, and were relatively well controlled and treated during the study. Age and working status are factors that influence the the aspartate aminotransferase/platelet ratio index., Competing Interests: The authors declare that there is no conflict of interest regarding the publication of this paper.
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- 2022
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29. Evidence-Based Decision Support for a Structured Care Program on Polypharmacy in Multimorbidity: A Guideline Upgrade Based on a Realist Synthesis.
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Dinh TS, Brueckle MS, González-González AI, Fessler J, Marschall U, Schubert-Zsilavesz M, Gerlach FM, Harder S, van den Akker M, Schubert I, Muth C, and The Evita Study Group
- Abstract
Evidence-based clinical guidelines generally consider single conditions, and rarely multimorbidity. We developed an evidence-based guideline for a structured care program to manage polypharmacy in multimorbidity by using a realist synthesis to update the German polypharmacy guideline including the following five methods: formal prioritization in focus groups; systematic guideline review of evidence-based multimorbidity/polypharmacy guidelines; evidence search/synthesis and recommendation development; multidisciplinary consent of recommendations; feasibility test of updated guideline. We identified the need for a better description of the target group, decision support, prioritization of medication, consideration of patient preferences and anticholinergic properties, and of healthcare interfaces. We conducted a systematic guideline review of eight guidelines and extracted and synthesized recommendations using the Ariadne principles. We also included 48 systematic reviews. We formulated and agreed upon 34 recommendations for the revised guideline. During the feasibility test, guideline use enabled 57% of GPs to identify problems, leading to medication changes in 49% and self-assessed improvement in 56% of patients. Although 58% of GPs felt that it was too long, 92% recommended it. Polypharmacy should be systematically reviewed at least annually. Patients, family members, and healthcare professionals should monitor and adjust it using prospective process validation, taking into account patient preferences and agreed treatment goals.
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- 2022
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30. Everyday lives of middle-aged persons living with multimorbidity: protocol of a mixed-methods systematic review.
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Gonzalez-Gonzalez AI, Brünn R, Nothacker J, Dinh TS, Brueckle MS, Dieckelmann M, Müller BS, and van den Akker M
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- Bias, Chronic Disease, Humans, Middle Aged, Qualitative Research, Research Design, Review Literature as Topic, Systematic Reviews as Topic, Delivery of Health Care, Multimorbidity
- Abstract
Introduction: Multimorbidity is the simultaneous occurrence of several (chronic) diseases. Persons living with multimorbidity not only have complex care needs, but the burden of care often has a negative impact on their family lives, leisure time and professional activities. The aim of this project is to systematically review the literature to assess how multimorbidity affects the everyday lives of middle-aged persons, and to find out what abilities and resources help in the development of coping strategies to overcome the challenges of living with it., Methods and Analysis: We will systematically search for studies reporting on the everyday life experiences of middle-aged persons (30-60 years) with multimorbidity (≥2 chronic conditions) in MEDLINE, CINAHL, PsycINFO, Social Sciences Citation Index, Social Sciences Citation Index Expanded, PSYNDEX and The Cochrane Library from inception. We will include all primary studies that use quantitative, qualitative and mixed methodologies, irrespective of publication date/study setting.Two independent reviewers will screen titles/abstracts/full texts, extract data from the selected studies and present evidence in terms of study/population characteristics, data collection method and the phenomenon of interest, that is, everyday life experiences of middle-aged persons with multimorbidity. Risk of bias will be independently assessed by two reviewers using the Mixed Methods Appraisal Tool. We will use a convergent integrated approach on qualitative/quantitative studies, whereby information will be synthesised narratively and, if possible, quantitatively., Ethics and Dissemination: Ethical approval is not required due to the nature of the proposed systematic review. Results from this research will be disseminated at relevant (inter)national conferences and via publication in peer-reviewed journals., Prospero Registration Number: CRD42021226699., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 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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31. Everyday Lives of Middle-Aged Persons with Multimorbidity: A Mixed Methods Systematic Review.
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González-González AI, Brünn R, Nothacker J, Schwarz C, Nury E, Dinh TS, Brueckle MS, Dieckelmann M, Müller BS, and van den Akker M
- Subjects
- Bias, Delivery of Health Care, Health Personnel, Humans, Middle Aged, Adaptation, Psychological, Multimorbidity
- Abstract
The healthcare burden of patients with multimorbidity may negatively affect their family lives, leisure time and professional activities. This mixed methods systematic review synthesizes studies to assess how multimorbidity affects the everyday lives of middle-aged persons, and identifies skills and resources that may help them overcome that burden. Two independent reviewers screened title/abstracts/full texts in seven databases, extracted data and used the Mixed Methods Appraisal Tool (MMAT) to assess risk of bias (RoB). We synthesized findings from 44 studies (49,519 patients) narratively and, where possible, quantitatively. Over half the studies provided insufficient information to assess representativeness or response bias. Two studies assessed global functioning, 15 examined physical functioning, 18 psychosocial functioning and 28 work functioning. Nineteen studies explored skills and resources that help people cope with multimorbidity. Middle-aged persons with multimorbidity have greater impairment in global, physical and psychosocial functioning, as well as lower employment rates and work productivity, than those without. Certain skills and resources help them cope with their everyday lives. To provide holistic and dynamic health care plans that meet the needs of middle-aged persons, health professionals need greater understanding of the experience of coping with multimorbidity and the associated healthcare burden.
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- 2021
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32. Effectiveness of the application of an electronic medication management support system in patients with polypharmacy in general practice: a study protocol of cluster-randomised controlled trial (AdAM).
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Müller BS, Klaaßen-Mielke R, Gonzalez-Gonzalez AI, Grandt D, Hammerschmidt R, Köberlein-Neu J, Kellermann-Mühlhoff P, Trampisch HJ, Beckmann T, Düvel L, Surmann B, Flaig B, Ihle P, Söling S, Grandt S, Dinh TS, Piotrowski A, Meyer I, Karbach U, Harder S, Perera R, Glasziou P, Pfaff H, Greiner W, Gerlach FM, Timmesfeld N, and Muth C
- Subjects
- Electronics, Humans, Medication Therapy Management, Potentially Inappropriate Medication List, Randomized Controlled Trials as Topic, General Practice, Polypharmacy
- Abstract
Introduction: Clinically complex patients often require multiple medications. Polypharmacy is associated with inappropriate prescriptions, which may lead to negative outcomes. Few effective tools are available to help physicians optimise patient medication. This study assesses whether an electronic medication management support system (eMMa) reduces hospitalisation and mortality and improves prescription quality/safety in patients with polypharmacy., Methods and Analysis: Planned design: pragmatic, parallel cluster-randomised controlled trial; general practices as randomisation unit; patients as analysis unit. As practice recruitment was poor, we included additional data to our primary endpoint analysis for practices and quarters from October 2017 to March 2021. Since randomisation was performed in waves, final study design corresponds to a stepped-wedge design with open cohort and step-length of one quarter., Scope: general practices, Westphalia-Lippe (Germany), caring for BARMER health fund-covered patients., Population: patients (≥18 years) with polypharmacy (≥5 prescriptions)., Sample Size: initially, 32 patients from each of 539 practices were required for each study arm (17 200 patients/arm), but only 688 practices were randomised after 2 years of recruitment. Design change ensures that 80% power is nonetheless achieved., Intervention: complex intervention eMMa., Follow-Up: at least five quarters/cluster (practice). recruitment: practices recruited/randomised at different times; after follow-up, control group practices may access eMMa., Outcomes: primary endpoint is all-cause mortality and hospitalisation; secondary endpoints are number of potentially inappropriate medications, cause-specific hospitalisation preceded by high-risk prescribing and medication underuse., Statistical Analysis: primary and secondary outcomes are measured quarterly at patient level. A generalised linear mixed-effect model and repeated patient measurements are used to consider patient clusters within practices. Time and intervention group are considered fixed factors; variation between practices and patients is fitted as random effects. Intention-to-treat principle is used to analyse primary and key secondary endpoints., Ethics and Dissemination: Trial approved by Ethics Commission of North-Rhine Medical Association. Results will be disseminated through workshops, peer-reviewed publications, local and international conferences., Trial Registration: NCT03430336. ClinicalTrials.gov (https://clinicaltrials.gov/ct2/show/NCT03430336)., Competing Interests: Competing interests: BSM, RK-M, AIG-G, RH, JK-N, PK-M, NT, TB, LD, BS, BF, PI, SS, TSD, AP, IM, UK, HP, WG, FMG, HJT, CM report grants from the German Federal Joint Committee during the conduct of the study. DG reports grants from BARMER during the conduct of the study and family member works for and holds shares of IT company involved in the project. SG works for and holds shares of IT company involved in the project. SH, RP, PG declare that they have no competing interests., (© Author(s) (or their employer(s)) 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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33. Predicting hospital admissions from individual patient data (IPD): an applied example to explore key elements driving external validity.
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Meid AD, Gonzalez-Gonzalez AI, Dinh TS, Blom J, van den Akker M, Elders P, Thiem U, Küllenberg de Gaudry D, Swart KMA, Rudolf H, Bosch-Lenders D, Trampisch HJ, Meerpohl JJ, Gerlach FM, Flaig B, Kom G, Snell KIE, Perera R, Haefeli WE, Glasziou P, and Muth C
- Subjects
- Hospitals, Humans, Probability, Prognosis, Hospitalization, Quality of Life
- Abstract
Objective: To explore factors that potentially impact external validation performance while developing and validating a prognostic model for hospital admissions (HAs) in complex older general practice patients., Study Design and Setting: Using individual participant data from four cluster-randomised trials conducted in the Netherlands and Germany, we used logistic regression to develop a prognostic model to predict all-cause HAs within a 6-month follow-up period. A stratified intercept was used to account for heterogeneity in baseline risk between the studies. The model was validated both internally and by using internal-external cross-validation (IECV)., Results: Prior HAs, physical components of the health-related quality of life comorbidity index, and medication-related variables were used in the final model. While achieving moderate discriminatory performance, internal bootstrap validation revealed a pronounced risk of overfitting. The results of the IECV, in which calibration was highly variable even after accounting for between-study heterogeneity, agreed with this finding. Heterogeneity was equally reflected in differing baseline risk, predictor effects and absolute risk predictions., Conclusions: Predictor effect heterogeneity and differing baseline risk can explain the limited external performance of HA prediction models. With such drivers known, model adjustments in external validation settings (eg, intercept recalibration, complete updating) can be applied more purposefully., Trial Registration Number: PROSPERO id: CRD42018088129., Competing Interests: Competing interests: None declared., (© Author(s) (or their employer(s)) 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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34. Unmet Need for Emergency Medical Services in Hanoi, Vietnam.
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Hoang BH, Mai TH, Dinh TS, Nguyen T, Dang TA, Le VC, Luong QC, and Nakahara S
- Abstract
Low- and middle-income countries urgently need to improve emergency medical services (EMSs) as a component of their healthcare systems. Here, we detailed EMS resources and their provision in Hanoi, Vietnam, and discussed necessary policies to upgrade EMSs. Between 2013 and 2018, EMS resources, measured as provider-to-population and ambulance-to-population ratios, decreased, whereas service provision, measured as the number of patients transported by ambulance per population, increased. EMS resources and their provision in Hanoi are far below the standards of high-income countries or figures in neighboring Asian countries. Therefore, it is imperative to upgrade health policies for the appropriate allocation of healthcare resources to EMSs and hospital services., Competing Interests: None, (Copyright © Japan Medical Association.)
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- 2021
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35. End-of-Life Care Preferences of Older Patients with Multimorbidity: A Mixed Methods Systematic Review.
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González-González AI, Schmucker C, Nothacker J, Nury E, Dinh TS, Brueckle MS, Blom JW, van den Akker M, Röttger K, Wegwarth O, Hoffmann T, Gerlach FM, Straus SE, Meerpohl JJ, and Muth C
- Abstract
Unpredictable disease trajectories make early clarification of end-of-life (EoL) care preferences in older patients with multimorbidity advisable. This mixed methods systematic review synthesizes studies and assesses such preferences. Two independent reviewers screened title/abstracts/full texts in seven databases, extracted data and used the Mixed Methods Appraisal Tool to assess risk of bias (RoB). We synthesized findings from 22 studies (3243 patients) narratively and, where possible, quantitatively. Nineteen studies assessed willingness to receive life-sustaining treatments (LSTs), six, the preferred place of care, and eight, preferences regarding shared decision-making processes. When unspecified, 21% of patients in four studies preferred any LST option. In three studies, fewer patients chose LST when faced with death and deteriorating health, and more when treatment promised life extension. In 13 studies, 67% and 48% of patients respectively were willing to receive cardiopulmonary resuscitation and mechanical ventilation, but willingness decreased with deteriorating health. Further, 52% of patients from three studies wished to die at home. Seven studies showed that unless incapacitated, most patients prefer to decide on their EoL care themselves. High non-response rates meant RoB was high in most studies. Knowledge of EoL care preferences of older patients with multimorbidity increases the chance such care will be provided.
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- 2020
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36. From sensitization to adoption? A qualitative study of the implementation of a digitally supported intervention for clinical decision making in polypharmacy.
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Söling S, Köberlein-Neu J, Müller BS, Dinh TS, Muth C, Pfaff H, and Karbach U
- Subjects
- Clinical Decision-Making, Humans, Primary Health Care, Qualitative Research, General Practitioners, Polypharmacy
- Abstract
Objective: Formative evaluation of the implementation process for a digitally supported intervention in polypharmacy in Germany. Qualitative research was conducted within a cluster randomized controlled trial (C-RCT). It focused on understanding how the intervention influences behavior-related outcomes in the prescription and medication review process., Methods/setting: Twenty-seven general practitioners (GPs) were included in the study in the two groups of the C-RCT, the intervention, and the wait list control group. Behavior-related outcomes were investigated using three-step data analysis (content analytic approach, documentary method, and design of a model of implementation pathways)., Results: Content analysis showed that physicians were more intensely aware of polypharmacy-related risks, described positive learning effects of the digital technology on their prescribing behavior, and perceived a change in communication with patients and pharmacists. Conversely, they felt uncertain about their own responsibility when prescribing. Three main dimensions were discovered which influenced adoption behavior: (1) the physicians' interpretation of the relevance of pharmaceutical knowledge provided by the intervention in changing decision-making situations in polypharmacy; (2) their medical code of ethics for clinical decision making in the context of progressing digitalization; and (3) their concepts of evidence-based medicine on the basis of professional experiences with polypharmacy in primary care settings. In our sample, both simple and complex pathways from sensitization to adoption were observed. The resulting model on adoption behavior includes a paradigmatic description of different pathways and a visualization of different observed levels and applied methodological approaches. We assumed that the GP habitus can weaken or strengthen interventional effects towards intervention uptake. This formative evaluation strategy is beneficial for the identification of behavior-related implementation barriers and facilitators., Conclusion: Our analyses of the adoption behavior of a digitally supported intervention in polypharmacy revealed both simple and complex pathways from awareness to adoption, which may impact the implementation of the intervention and therefore, its effectiveness. Future consideration of adoption behavior in the planning and evaluation of digitally supported interventions may enhance uptake and support the interpretation of effects., Trial Registration: NCT03430336 , 12 February 2018.
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- 2020
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37. An automated alarm system for food safety by using electronic invoices.
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Chang WT, Yeh YP, Wu HY, Lin YF, Dinh TS, and Lian IB
- Subjects
- Automation, Data Mining, Machine Learning, Oils, Electronics, Food Safety
- Abstract
Background: Invoices had been used in food product traceability, however, none have addressed the automated alarm system for food safety by utilizing electronic invoice big data. In this paper, we present an alarm system for edible oil manufacture that can prevent a food safety crisis rather than trace problematic sources post-crisis., Materials and Methods: Using nearly 100 million labeled e-invoices from the 2013‒2014 of 595 edible oil manufacturers provided by Ministry of Finance, we applied text-mining, statistical and machine learning techniques to "train" the system for two functions: (1) to sieve edible oil-related e-invoices of manufacturers who may also produce other merchandise and (2) to identify suspicious edible oil manufacture based on irrational transactions from the e-invoices sieved., Results: The system was able to (1) accurately sieve the correct invoices with sensitivity >95% and specificity >98% via text classification and (2) identify problematic manufacturers with 100% accuracy via Random Forest machine learning method, as well as with sensitivity >70% and specificity >99% through simple decision-tree method., Conclusion: E-invoice has bright future on the application of food safety. It can not only be used for product traceability, but also prevention of adverse events by flag suspicious manufacturers. Compulsory usage of e-invoice for food producing can increase the accuracy of this alarm system., Competing Interests: The authors have declared that no competing interests exist.
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- 2020
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38. Study Design for the 2016 Baseline Survey of a Health System Strengthening Project in Quoc Oai District, Hanoi, Vietnam.
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Hoang VM, Oh J, Nguyen BN, Dat LM, Lee JK, Tran TGH, Nguyen VH, Lee SP, Bang KS, Cho Y, Kim SY, Lee HY, Le QC, Choi N, Dinh TS, and Luu NH
- Subjects
- Cross-Sectional Studies, Databases, Factual, Humans, Surveys and Questionnaires, Vietnam, Delivery of Health Care
- Abstract
Background: In order to provide essential scientific evidence on the population's health status and social health determinants as well as the current capacity of the health care system in Vietnam to health policy makers and managers, Vietnam Ministry of Health, Hanoi University of Public Health, Hanoi Medical University, and Ho Chi Minh University of Medicine and Pharmacy collaborated with Seoul National University (Korea) and conducted a health system survey in the Quoc Oai district (of Hanoi capital) that represented northern rural Vietnam., Methods: The study design was a cross-sectional study. The survey covered different topics (more than 200 questions) and was administered in three separate questionnaires: 1) Basic information of all household members; 2) Household characteristics; and 3) Individual characteristics. Socio-demographic characteristics among the households and individuals were collected from 2,400 households sampled by multi-stage cluster sampling method: more than 200 questions., Results: The household size of Quoc Oai was larger than the national average and there was no significant difference in gender composition. In addition, the proportions of pre-elderly, age 55-64, and elderly group (65 years old and over) were higher than the national population statistics. In this context, demographic transition has begun in Quoc Oai., Conclusion: This study design description provides the basic information about a baseline survey of a future prospective cohort (as a part of a collaborative project on strengthening the health system in Vietnam) to the prospective data user of this survey., Competing Interests: Disclosure: The authors have no potential conflict of interest to disclose.
- Published
- 2019
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39. Defective mitochondrial respiration, altered dNTP pools and reduced AP endonuclease 1 activity in peripheral blood mononuclear cells of Alzheimer's disease patients.
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Maynard S, Hejl AM, Dinh TS, Keijzers G, Hansen ÅM, Desler C, Moreno-Villanueva M, Bürkle A, Rasmussen LJ, Waldemar G, and Bohr VA
- Subjects
- Age Factors, Aged, Biomarkers metabolism, Case-Control Studies, Cell Respiration, Cognition, Energy Metabolism, Female, Humans, Leukocytes, Mononuclear metabolism, Male, Middle Aged, Nucleotides metabolism, Sex Factors, Adenosine Triphosphate metabolism, Alzheimer Disease metabolism, DNA Breaks, DNA-(Apurinic or Apyrimidinic Site) Lyase metabolism, Mitochondria metabolism
- Abstract
Aims: Accurate biomarkers for early diagnosis of Alzheimer's disease (AD) are badly needed. Recent reports suggest that dysfunctional mitochondria and DNA damage are associated with AD development. In this report, we measured various cellular parameters, related to mitochondrial bioenergetics and DNA damage, in peripheral blood mononuclear cells (PBMCs) of AD and control participants, for biomarker discovery., Methods: PBMCs were isolated from 53 patients with AD of mild to moderate degree and 30 age-matched healthy controls. Tests were performed on the PBMCs from as many of these participants as possible. We measured glycolysis and mitochondrial respiration fluxes using the Seahorse Bioscience flux analyzer, mitochondrial ROS production using flow cytometry, dNTP levels by way of a DNA polymerization assay, DNA strand breaks using the Fluorometric detection of Alkaline DNA Unwinding (FADU) assay, and APE1 incision activity (in cell lysates) on a DNA substrate containing an AP site (to estimate DNA repair efficiency)., Results: In the PBMCs of AD patients, we found reduced basal mitochondrial oxygen consumption, reduced proton leak, higher dATP level, and lower AP endonuclease 1 activity, depending on adjustments for gender and/or age., Conclusions: This study reveals impaired mitochondrial respiration, altered dNTP pools and reduced DNA repair activity in PBMCs of AD patients, thus suggesting that these biochemical activities may be useful as biomarkers for AD.
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- 2015
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40. Molecular dynamics investigations of ozone on an ab initio potential energy surface with the utilization of pattern-recognition neural network for accurate determination of product formation.
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Le HM, Dinh TS, and Le HV
- Subjects
- Quantum Theory, Surface Properties, Molecular Dynamics Simulation, Neural Networks, Computer, Ozone chemistry
- Abstract
The singlet-triplet transformation and molecular dissociation of ozone (O(3)) gas is investigated by performing quasi-classical molecular dynamics (MD) simulations on an ab initio potential energy surface (PES) with visible and near-infrared excitations. MP4(SDQ) level of theory with the 6-311g(2d,2p) basis set is executed for three different electronic spin states (singlet, triplet, and quintet). In order to simplify the potential energy function, an approximation is adopted by ignoring the spin-orbit coupling and allowing the molecule to switch favorably and instantaneously to the spin state that is more energetically stable (lowest in energy among the three spin states). This assumption has previously been utilized to study the SiO(2) system as reported by Agrawal et al. (J. Chem. Phys. 2006, 124 (13), 134306). The use of such assumption in this study probably makes the upper limits of computed rate coefficients the true rate coefficients. The global PES for ozone is constructed by fitting 5906 ab initio data points using a 60-neuron two-layer feed-forward neural network. The mean-absolute error and root-mean-squared error of this fit are 0.0446 eV (1.03 kcal/mol) and 0.0756 eV (1.74 kcal/mol), respectively, which reveal very good fitting accuracy. The parameter coefficients of the global PES are reported in this paper. In order to identify the spin state with high confidence, we propose the use of a pattern-recognition neural network, which is trained to predict the spin state of a given configuration (with a prediction accuracy being 95.6% on a set of testing data points). To enhance the prediction effectiveness, a buffer series of five points are validated to confirm the spin state during the MD process to gain better confidence. Quasi-classical MD simulations from 1.2 to 2.4 eV of total internal energy (including zero-point energy) result in rate coefficients of singlet-triplet transformation in the range of 0.027 ps(-1) to 1.21 ps(-1). Also, we find very low dissociation probability up to 2.4 eV of internal energy during the investigating period (5 ps), which suggests that dissociation does not occur directly from the singlet ground-state, but it involves the excited triplet-state as an intermediate step and requires more reaction time to occur.
- Published
- 2011
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