60 results on '"Kaushik Guha"'
Search Results
2. Real‐world evidence in a national health service: results of the UK CardioMEMS HF System Post‐Market Study
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Martin R. Cowie, Andrew Flett, Peter Cowburn, Paul Foley, Badrinathan Chandrasekaran, Ian Loke, Chris Critoph, Roy S. Gardner, Kaushik Guha, Tim R. Betts, Gerry Carr‐White, Amir Zaidi, Hoong Sern Lim, Carl Hayward, Ashish Patwala, Dominic Rogers, Stephen Pettit, Carlo Gazzola, John Henderson, and Philip B. Adamson
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CardioMEMS™ HF System ,Clinical trial results ,UK ,Haemodynamic monitoring ,Heart failure ,Pulmonary artery pressure ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Abstract Aims The CardioMEMS HF System Post‐Market Study (COAST) was designed to evaluate the safety, effectiveness, and feasibility of haemodynamic‐guided heart failure (HF) management using a small sensor implanted in the pulmonary artery of New York Heart Association (NYHA) Class III HF patients in the UK, Europe, and Australia. Methods and results COAST is a prospective, international, multicentre, open‐label clinical study (NCT02954341). The primary clinical endpoint compares annualized HF hospitalization rates after 1 year of haemodynamic‐guided management vs. the year prior to sensor implantation in patients with NYHA Class III symptoms and a previous HF hospitalization. The primary safety endpoints assess freedom from device/system‐related complications and pressure sensor failure after 2 years. Results from the first 100 patients implanted at 14 out of the 15 participating centres in the UK are reported here. At baseline, all patients were in NYHA Class III, 70% were male, mean age was 69 ± 12 years, and 39% had an aetiology of ischaemic cardiomyopathy. The annualized HF hospitalization rate after 12 months was 82% lower [95% confidence interval 72–88%] than the previous 12 months (0.27 vs. 1.52 events/patient‐year, respectively, P
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- 2022
- Full Text
- View/download PDF
3. NICE diagnostic heart failure pathway: screening referrals identifies patients better served by community‐based management
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Geraint Morton, Helena Bolam, Zaid Hirmiz, Raj Chahal, Kaushik Guha, and Paul R. Kalra
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Heart failure ,NICE ,NHS Long Term Plan ,Advice and Guidance ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Abstract Aims Evaluate whether UK National Institute for Health & Care Excellence (NICE) chronic heart failure (HF) guidelines can be safely and effectively refined through specialist referral management. Methods and results All referrals to a UK centre 1/3/2019–30/5/2019 and 1/6/2020–31/7/2020 were reviewed by HF specialists. Patients were triaged to specialist assessment in HF clinic, according to the NICE HF diagnostic pathway [urgency based on N‐terminal pro brain natriuretic peptide (NTproBNP) levels], or the referrer given remote Advice & Guidance (A&G), to aid primary care management. Standardized triage criteria for recommending primary care management were (i) presentation inconsistent with HF, (ii) competing comorbidity/frailty meant specialist assessment in clinic not in patient's best interests, (iii) recent assessment for same condition, or (iv) patient had known HF. Following triage patients managed in the primary care were categorized as low or high risk of adverse outcomes. Outcome measures were 90 day all‐cause and HF hospital admission and mortality rates. Four hundred and eighty‐six patients had the median age of 80 (74–86) years, and 253 (52%) were male. Two hundred and six (42%) had NTproBNP > 2000 pg/mL. Primary care management was recommended for 128 patients (26%): 105 (22%) A&G alone and 23 input from community HF nurse specialists. Primary care management was recommended due to the following: presentation inconsistent with HF 53 (42%), more important competing comorbidity/frailty 35 (27%), recent assessment 17 (13%), and known HF 23 (18%). Patients managed in primary care had higher rates of all‐cause hospitalization (30% vs. 19%; P = 0.018) and death (7% vs. 2%; P = 0.0054) than those seen in HF clinic. Of those managed in primary care, 50 (39%) were determined to be at low risk and 78 (61%) at high risk. High‐risk patients were older (87 vs. 80 years; P = 0.0026), had much higher NTproBNP (2666 vs. 697 pg/mL; P
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- 2021
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4. Correction: Clinical profile and prognostic factors of alcoholic cardiomyopathy in tribal and non-tribal population
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Alex Hobson, Paul R Kalra, Kalaivani Mahadevan, Elena Cowan, Navneet Kalsi, Helena Bolam, Geraint Morton, Kaushik Guha, Peter A Brennan, and Richard Arnett
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Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Published
- 2020
- Full Text
- View/download PDF
5. Distractions in the cardiac catheterisation laboratory: impact for cardiologists and patient safety
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Alex Hobson, Paul R Kalra, Kalaivani Mahadevan, Elena Cowan, Navneet Kalsi, Helena Bolam, Geraint Morton, Kaushik Guha, Peter A Brennan, and Richard Arnett
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Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Objective To understand human factors (HF) contributing to disturbances during invasive cardiac procedures, including frequency and nature of distractions, and assessment of operator workload.Methods Single centre prospective observational evaluation of 194 cardiac procedures in three adult cardiac catheterisation laboratories over 6 weeks. A proforma including frequency, nature, magnitude and level of procedural risk at the time of each distraction/interruption was completed for each case. The primary operator completed a National Aeronautical and Space Administration (NASA) task load questionnaire rating mental/physical effort, level of frustration, time-urgency, and overall effort and performance.Results 264 distractions occurred in 106 (55%) out of 194 procedures observed; 80% were not relevant to the case being undertaken; 14% were urgent including discussions of potential ST-elevation myocardial infarction requiring emergency angioplasty. In procedures where distractions were observed, frequency per case ranged from 1 to 16 (mean 2.5, SD ±2.2); 43 were documented during high-risk stages of the procedure. Operator rating of NASA task load parameters demonstrated higher levels of mental and physical workload and effort during cases in which distractions occurred.Conclusions In this first description of HF in adult cardiac catheter laboratories, we found that fewer than half of all procedures were completed without interruption/distraction. The majority were unnecessary and without relation to the case or list. We propose the introduction of a ‘sterile cockpit’ environment within catheter laboratories, as adapted from aviation and used in surgical operating theatres, to minimise non-emergent interruptions and disturbances, to improve operator conditions and overall patient safety.
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- 2020
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6. The prognostic significance of serum sodium in a population undergoing cardiac resynchronisation therapy
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Kaushik Guha, Jens Spießhöfer, Adam Hartley, Simon Pearse, Philip Y. Xiu, and Rakesh Sharma
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Heart failure ,Cardiac resynchronisation therapy (CRT) ,Hyponatremia ,Surgery ,RD1-811 ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Purpose: To determine the prognostic implications of changes towards hyponatremia at varying time-points in the treatment of patients undergoing cardiac resynchronisation therapy (CRT). Methods: A retrospective series of 249 patients was studied from 2002 to 2013. The population was categorized on the basis of serum sodium profile at baseline, at 1 month and at 6 month follow up visits following successful CRT implantation. The composite endpoint was all-cause mortality and heart failure hospitalisation (defined by the need for intravenous diuretic therapy) following CRT implantation. Results: A total of 249 patients (67.8 ± 12.5 years; NYHA class III/IV 75; LVEF 27.2 ± 8.8%) were followed up for a median of 5.5 years. Hyponatremia at baseline, 1 month or 6 months follow up did not predict the composite endpoint. 26% of patients showed hyponatremia at baseline prior to CRT implantation, while it was present in 19.9% of patients 1 month (p = 0.003) and in 16% (p 7.0 mmol/l) (HR 1.61 [1.05–2.46], p = 0.03) at baseline were associated with an increased risk of unplanned heart failure hospitalisation and all-cause mortality after CRT implantation. Conclusions: A change towards hyponatremia when observed 6 months after CRT implantation may predict a worse clinical outcome. Additionally, renal impairment and higher diuretic doses are associated with an increased risk of mortality in the population analysed.
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- 2017
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7. A rare case of extensive biventricular cardiac sarcoidosis with reversible torrential tricuspid regurgitation
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Joseph Okafor, Alessia Azzu, Raheel Ahmed, Barbara Cassimon, Kshama Wechalekar, Athol Wells, Vasileios Kouranos, A. John Baksi, Rakesh Sharma, Kaushik Guha, and Rajdeep Khattar
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Radiology, Nuclear Medicine and imaging ,Cardiology and Cardiovascular Medicine - Abstract
Reversal of torrential tricuspid regurgitation is rarely seen. We describe a case in which effective immunosuppression alongside conventional heart failure therapies lead to reversibility of torrential tricuspid regurgitation in a patient with cardiac sarcoidosis. We also discuss the diagnostic challenge in distinguishing cardiac sarcoidosis from other myocardial diseases in a patient presenting with biventricular failure.
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- 2023
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8. Dapagliflozin versus metolazone in heart failure resistant to loop diuretics
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Su Ern Yeoh, Joanna Osmanska, Mark C Petrie, Katriona J M Brooksbank, Andrew L Clark, Kieran F Docherty, Paul W X Foley, Kaushik Guha, Crawford A Halliday, Pardeep S Jhund, Paul R Kalra, Gemma McKinley, Ninian N Lang, Matthew M Y Lee, Alex McConnachie, James J McDermott, Elke Platz, Peter Sartipy, Alison Seed, Bethany Stanley, Robin A P Weir, Paul Welsh, John J V McMurray, and Ross T Campbell
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Cardiology and Cardiovascular Medicine - Abstract
Background and Aims To examine the decongestive effect of the sodium-glucose cotransporter 2 inhibitor dapagliflozin compared to the thiazide-like diuretic metolazone in patients hospitalized for heart failure and resistant to treatment with intravenous furosemide. Methods A multi-centre, open-label, randomized, active-comparator trial. Patients were randomized to dapagliflozin 10 mg once daily or metolazone 5-10 mg once daily for a 3-day treatment period, with follow-up for primary and secondary endpoints until day 5 (96 hours). The primary endpoint was diuretic effect, assessed by change in weight (kg). Secondary endpoints included change in pulmonary congestion (lung ultrasound), loop diuretic efficiency (weight change per 40 mg of furosemide), and a volume assessment score. Results 61 patients were randomized. The mean (±standard deviation) cumulative dose of furosemide at 96 hours was 976 (±492) mg in the dapagliflozin group and 704 (±428) mg in patients assigned to metolazone. The mean (±standard deviation) decrease in weight at 96 hours was 3.0 (2.5) kg with dapagliflozin compared to 3.6 (2.0) kg with metolazone [mean difference 0.65, 95% confidence interval (CI) -0.12,1.41 kg; p=0.11]. Loop diuretic efficiency was less with dapagliflozin than with metolazone [mean 0.15 (0.12) versus 0.25 (0.19); difference -0.08, 95% CI -0.17,0.01 kg; p=0.10]. Changes in pulmonary congestion and volume assessment score were similar between treatments. Decreases in plasma sodium and potassium and increases in urea and creatinine were smaller with dapagliflozin than with metolazone. Serious adverse events were similar between treatments. Conclusion In patients with heart failure and loop diuretic resistance, dapagliflozin was not more effective at relieving congestion than metolazone. Patients assigned to dapagliflozin received a larger cumulative dose of furosemide but experienced less biochemical upset than those assigned to metolazone. ClinicalTrials.gov Identifier NCT04860011
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- 2023
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9. NICE diagnostic heart failure pathway: screening referrals identifies patients better served by community‐based management
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Paul R. Kalra, Kaushik Guha, Geraint Morton, Helena Bolam, Zaid Hirmiz, and Raj Chahal
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Male ,medicine.medical_specialty ,Short Communication ,Short Communications ,Nice ,Heart failure ,Pro-Brain Natriuretic Peptide ,NICE ,Advice and Guidance ,Patient experience ,medicine ,Humans ,Diseases of the circulatory (Cardiovascular) system ,NHS Long Term Plan ,Referral and Consultation ,computer.programming_language ,High rate ,Aged, 80 and over ,Specialist referral ,business.industry ,medicine.disease ,Comorbidity ,Hospitalization ,RC666-701 ,Emergency medicine ,Critical Pathways ,Cardiology and Cardiovascular Medicine ,business ,Very high risk ,computer - Abstract
Aims Evaluate whether UK National Institute for Health & Care Excellence (NICE) chronic heart failure (HF) guidelines can be safely and effectively refined through specialist referral management. Methods and results All referrals to a UK centre 1/3/2019–30/5/2019 and 1/6/2020–31/7/2020 were reviewed by HF specialists. Patients were triaged to specialist assessment in HF clinic, according to the NICE HF diagnostic pathway [urgency based on N‐terminal pro brain natriuretic peptide (NTproBNP) levels], or the referrer given remote Advice & Guidance (A&G), to aid primary care management. Standardized triage criteria for recommending primary care management were (i) presentation inconsistent with HF, (ii) competing comorbidity/frailty meant specialist assessment in clinic not in patient's best interests, (iii) recent assessment for same condition, or (iv) patient had known HF. Following triage patients managed in the primary care were categorized as low or high risk of adverse outcomes. Outcome measures were 90 day all‐cause and HF hospital admission and mortality rates. Four hundred and eighty‐six patients had the median age of 80 (74–86) years, and 253 (52%) were male. Two hundred and six (42%) had NTproBNP > 2000 pg/mL. Primary care management was recommended for 128 patients (26%): 105 (22%) A&G alone and 23 input from community HF nurse specialists. Primary care management was recommended due to the following: presentation inconsistent with HF 53 (42%), more important competing comorbidity/frailty 35 (27%), recent assessment 17 (13%), and known HF 23 (18%). Patients managed in primary care had higher rates of all‐cause hospitalization (30% vs. 19%; P = 0.018) and death (7% vs. 2%; P = 0.0054) than those seen in HF clinic. Of those managed in primary care, 50 (39%) were determined to be at low risk and 78 (61%) at high risk. High‐risk patients were older (87 vs. 80 years; P = 0.0026), had much higher NTproBNP (2666 vs. 697 pg/mL; P
- Published
- 2021
10. 13 Myocardial fibrosis entropy is associated with life-threatening arrhythmia in non-ischaemic cardiomyopathy
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Daniel J Hammersley, Hassan A Zaidi, Richard E Jones, Suzan Hatipoglu, Emmanuel Androulakis, Lukas Mach, Amrit S Lota, Upasana Tayal, Zohya Khalique, Antonio De Marvao, Resham Baruah, Kaushik Guha, Dudley J Pennell, Brian P Halliday, Martin J Bishop, and Sanjay K Prasad
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- 2023
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11. Irreversible Cabozantinib-induced left ventricular systolic dysfunction, a potentially novel observation
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Callum Verran and Kaushik Guha
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Pharmacology ,Infectious Diseases ,Oncology ,Pharmacology (medical) - Abstract
The case report describes the presentation of incident heart failure with reduced ejection fraction, following Cabozantinib chemotherapy. In contrast to previous cases, despite maximal medical therapy for this gentleman it became irreversible and contributed to his death. Hence the case illustrates the potential cardiotoxicity of Cabozantinib and reinforces the need for co-ordinated multi-disciplinary team care for such patients. Within existing cardio-oncology infrastructure, it may mean that such patients require enhanced echocardiographic surveillance.
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- 2022
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12. Characteristics and outcomes of patients with suspected heart failure referred in line with National Institute for Health and Care Excellence guidance
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Alice Zheng, Paul Haydock, Paul R. Kalra, P J Cowburn, Kaushik Guha, Lukas Mach, Robert D Adam, AS Flett, Geraint Morton, and Elena Cowan
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Male ,Time Factors ,Nice ,030204 cardiovascular system & hematology ,State Medicine ,0302 clinical medicine ,Natriuretic Peptide, Brain ,heart failure with reduced ejection fraction ,030212 general & internal medicine ,quality and outcomes of care ,Referral and Consultation ,computer.programming_language ,Aged, 80 and over ,education.field_of_study ,Ejection fraction ,Academies and Institutes ,Prognosis ,Up-Regulation ,Hospitalization ,Echocardiography ,Practice Guidelines as Topic ,Female ,Cardiology and Cardiovascular Medicine ,Algorithms ,heart failure with preserved ejection fraction ,medicine.medical_specialty ,Waiting Lists ,Population ,Time-to-Treatment ,Secondary care ,03 medical and health sciences ,Predictive Value of Tests ,medicine ,Humans ,education ,Suspected heart failure ,Heart Failure and Cardiomyopathies ,Aged ,Retrospective Studies ,Heart Failure ,business.industry ,Stroke Volume ,medicine.disease ,Peptide Fragments ,United Kingdom ,Heart failure ,Emergency medicine ,Observational study ,Heart failure with preserved ejection fraction ,business ,computer ,Biomarkers - Abstract
ObjectiveTo describe the population, heart failure (HF) diagnosis rate, and 1-year hospitalisation and mortality of patients with suspected HF and elevated N-terminal pro B-type natriuretic peptide (NTproBNP) investigated according to UK National Institute for Health and Care Excellence (NICE) guidelines.MethodsNICE recommends patients with suspected HF, based on clinical presentation and elevated NTproBNP, are referred for specialist assessment and echocardiography. Patients should be seen within 2 weeks when NTproBNP is >2000 pg/mL (2-week pathway: 2WP) or within 6 weeks when NTproBNP is 400–2000 pg/mL (6-week pathway: 6WP). This is a retrospective, multicentre, observational study of consecutive patients with suspected HF referred from primary care between 2014 and 2016 to dedicated secondary care HF clinics based on the NICE 2WP and 6WP. Data were obtained from hospital records and episode statistics. Mortality and hospitalisation rates were calculated 1 year from NTproBNP measurement.Results1271 patients (median age 80; IQR 73–85) were assessed, 680 (53%) of whom were female. 667 (53%) were referred on the 2WP and 604 (47%) on the 6WP. 698 (55%) were diagnosed with HF (369 HF with reduced ejection fraction) and 566 (45%) as not HF (NHF). 1-year mortality was 10% (n=129) and hospitalisation was 33% (n=413). Patients on the 2WP had higher mortality and hospitalisation rates than those on the 6WP, 14% vs 6% (pConclusionsOutcomes using the NICE approach of short waiting time targets for specialist assessment of patients with suspected HF and raised NTproBNP are not known. The model identifies an elderly population a high proportion of whom have HF. Irrespective of diagnosis, patients have high rates of adverse outcomes. These contemporary real-world data provide a platform for discussions with patients and shaping HF services.
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- 2020
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13. Unmasking of sinoatrial disease with ticagrelor post percutaneous coronary intervention
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Chitsa Seyani, Kaushik Guha, and Brijesh Anantharam
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Ticagrelor ,medicine.medical_specialty ,business.industry ,medicine.medical_treatment ,Percutaneous coronary intervention ,General Medicine ,Disease ,Percutaneous Coronary Intervention ,Treatment Outcome ,Text mining ,Internal medicine ,Cardiology ,Humans ,Medicine ,Acute Coronary Syndrome ,business ,Platelet Aggregation Inhibitors ,medicine.drug - Published
- 2021
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14. Real-world evidence in a national health service: results of the UK CardioMEMS HF System Post-Market Study
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Martin R. Cowie, Andrew Flett, Peter Cowburn, Paul Foley, Badrinathan Chandrasekaran, Ian Loke, Chris Critoph, Roy S. Gardner, Kaushik Guha, Tim R. Betts, Gerry Carr‐White, Amir Zaidi, Hoong Sern Lim, Carl Hayward, Ashish Patwala, Dominic Rogers, Stephen Pettit, Carlo Gazzola, John Henderson, and Philip B. Adamson
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Male ,Cardiac & Cardiovascular Systems ,Heart failure ,CardioMEMS (TM) HF System ,State Medicine ,Humans ,Diseases of the circulatory (Cardiovascular) system ,Prospective Studies ,UK ,Clinical trial results ,1102 Cardiorespiratory Medicine and Haematology ,Aged ,Aged, 80 and over ,Science & Technology ,Original Articles ,Blood Pressure Monitoring, Ambulatory ,Middle Aged ,Pulmonary artery pressure ,United Kingdom ,CardioMEMS™ HF System ,RC666-701 ,Cardiovascular System & Cardiology ,Haemodynamic monitoring ,HEART-FAILURE ,Original Article ,Cardiology and Cardiovascular Medicine ,Life Sciences & Biomedicine - Abstract
Aims The CardioMEMS HF System Post‐Market Study (COAST) was designed to evaluate the safety, effectiveness, and feasibility of haemodynamic‐guided heart failure (HF) management using a small sensor implanted in the pulmonary artery of New York Heart Association (NYHA) Class III HF patients in the UK, Europe, and Australia. Methods and results COAST is a prospective, international, multicentre, open‐label clinical study (NCT02954341). The primary clinical endpoint compares annualized HF hospitalization rates after 1 year of haemodynamic‐guided management vs. the year prior to sensor implantation in patients with NYHA Class III symptoms and a previous HF hospitalization. The primary safety endpoints assess freedom from device/system‐related complications and pressure sensor failure after 2 years. Results from the first 100 patients implanted at 14 out of the 15 participating centres in the UK are reported here. At baseline, all patients were in NYHA Class III, 70% were male, mean age was 69 ± 12 years, and 39% had an aetiology of ischaemic cardiomyopathy. The annualized HF hospitalization rate after 12 months was 82% lower [95% confidence interval 72–88%] than the previous 12 months (0.27 vs. 1.52 events/patient‐year, respectively, P
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- 2021
15. Using Parallel Program Characteristics in Dynamic Processor Allocation Policies.
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Tim Brecht and Kaushik Guha
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- 1996
16. Distractions in the cardiac catheterisation laboratory: impact for cardiologists and patient safety
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Paul R. Kalra, Navneet Kalsi, Peter Brennan, Kaushik Guha, Alex Hobson, Elena Cowan, Geraint Morton, Richard Arnett, Kalaivani Mahadevan, and Helena Bolam
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Adult ,Male ,medicine.medical_specialty ,lcsh:Diseases of the circulatory (Cardiovascular) system ,delivery of care ,030204 cardiovascular system & hematology ,Task (project management) ,03 medical and health sciences ,Patient safety ,0302 clinical medicine ,Cardiologists ,Distraction ,Medicine ,Humans ,030212 general & internal medicine ,Myocardial infarction ,Prospective Studies ,Cardiac Rehabilitation ,Interventional cardiology ,business.industry ,interventional cardiology ,Workload ,medicine.disease ,Catheter ,quality of care and outcomes ,lcsh:RC666-701 ,Emergency medicine ,Observational study ,Clinical Competence ,Patient Safety ,Cardiology and Cardiovascular Medicine ,business ,Health Care Delivery, Economics and Global Health Care - Abstract
ObjectiveTo understand human factors (HF) contributing to disturbances during invasive cardiac procedures, including frequency and nature of distractions, and assessment of operator workload.MethodsSingle centre prospective observational evaluation of 194 cardiac procedures in three adult cardiac catheterisation laboratories over 6 weeks. A proforma including frequency, nature, magnitude and level of procedural risk at the time of each distraction/interruption was completed for each case. The primary operator completed a National Aeronautical and Space Administration (NASA) task load questionnaire rating mental/physical effort, level of frustration, time-urgency, and overall effort and performance.Results264 distractions occurred in 106 (55%) out of 194 procedures observed; 80% were not relevant to the case being undertaken; 14% were urgent including discussions of potential ST-elevation myocardial infarction requiring emergency angioplasty. In procedures where distractions were observed, frequency per case ranged from 1 to 16 (mean 2.5, SD ±2.2); 43 were documented during high-risk stages of the procedure. Operator rating of NASA task load parameters demonstrated higher levels of mental and physical workload and effort during cases in which distractions occurred.ConclusionsIn this first description of HF in adult cardiac catheter laboratories, we found that fewer than half of all procedures were completed without interruption/distraction. The majority were unnecessary and without relation to the case or list. We propose the introduction of a ‘sterile cockpit’ environment within catheter laboratories, as adapted from aviation and used in surgical operating theatres, to minimise non-emergent interruptions and disturbances, to improve operator conditions and overall patient safety.
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- 2020
17. Epidemiology and general pathophysiological classification of heart failure
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Theresa A. McDonagh and Kaushik Guha
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medicine.medical_specialty ,business.industry ,Heart failure ,Epidemiology ,medicine ,Intensive care medicine ,business ,medicine.disease - Abstract
Definition and classification—heart failure is a clinical syndrome caused by cardiac dysfunction, most commonly left ventricular systolic dysfunction (LVSD). Many epidemiological studies focus on characterizing the incidence and/or prevalence of LVSD, using cut off points ranging from less than 30% to less than 50%. Patients with heart failure symptoms or signs and normal or near normal LV function are often classified as having heart failure with preserved ejection fraction (HF-PEF), but there is no clear and generally accepted definition of this condition. Epidemiology—estimates of incidence and prevalence are heavily influenced by definition. An echocardiographic study of a random sample of the general population aged 25–74 years in Glasgow (Scotland) estimated a prevalence of heart failure of 1.5%, with a further 1.4% having asymptomatic LVSD. Prevalence rises significantly with age, with a median age of first presentation in the mid seventies. Longitudinal data suggests that the incidence of heart failure has remained fairly stable over the last few decades, but prevalence is increasing as more people survive cardiovascular disease earlier in life. Aetiology—determining the aetiology of heart failure in epidemiological studies is difficult: the commonest cause in the developed world is coronary artery disease, followed by hypertension, which predominates in those with a diagnosis of HF-PEF. Prognosis and morbidity—data from the United States of America and the United Kingdom show the death rates of those admitted to hospital with a diagnosis of heart failure have a mortality of over 30% at one year. The outcome has improved in recent years, perhaps linked to the increased usage of angiotensin inhibitors and β-blockers. Heart failure accounts for around 5% of all adult general medical admissions, and in developed countries the condition consumes 1 to 2% of health care budgets.
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- 2020
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18. The prognostic significance of serum sodium in a population undergoing cardiac resynchronisation therapy
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Jens Spießhöfer, Rakesh Sharma, Philip Y. Xiu, Kaushik Guha, Adam Hartley, and Simon G. Pearse
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BP, blood pressure ,Male ,Time Factors ,medicine.medical_treatment ,NYHA, New York Heart Association class ,030204 cardiovascular system & hematology ,HF, heart failure ,Cardiac Resynchronization Therapy ,0302 clinical medicine ,Cause of Death ,LVEF, left ventricular ejection fraction ,Medicine ,030212 general & internal medicine ,education.field_of_study ,Ejection fraction ,BL, baseline ,Prognosis ,Survival Rate ,Cardiology ,Original Article ,ESC HFA, European Society of Cardiology guidelines for the diagnosis and treatment of acute and chronic heart failure 2012 ,Female ,Hyponatremia ,Cardiology and Cardiovascular Medicine ,Month follow up ,medicine.medical_specialty ,RD1-811 ,Population ,Heart failure ,CRT-P, cardiac resynchronisation therapy (without an ICD) ,Nyha class ,03 medical and health sciences ,Cardiac resynchronisation therapy (CRT) ,Internal medicine ,Diseases of the circulatory (Cardiovascular) system ,Humans ,ICD, implantable cardioverter defibrillator ,education ,1MFU, 1 month follow up ,CRT, cardiac resynchronisation therapy ,Aged ,Retrospective Studies ,business.industry ,Sodium ,6MFU, 6 months follow up ,medicine.disease ,United Kingdom ,Increased risk ,RC666-701 ,CRT-D, cardiac resynchronisation therapy (with an ICD) ,Surgery ,Diuretic ,business ,Biomarkers ,Follow-Up Studies - Abstract
Purpose: To determine the prognostic implications of changes towards hyponatremia at varying time-points in the treatment of patients undergoing cardiac resynchronisation therapy (CRT). Methods: A retrospective series of 249 patients was studied from 2002 to 2013. The population was categorized on the basis of serum sodium profile at baseline, at 1 month and at 6 month follow up visits following successful CRT implantation. The composite endpoint was all-cause mortality and heart failure hospitalisation (defined by the need for intravenous diuretic therapy) following CRT implantation. Results: A total of 249 patients (67.8 ± 12.5 years; NYHA class III/IV 75; LVEF 27.2 ± 8.8%) were followed up for a median of 5.5 years. Hyponatremia at baseline, 1 month or 6 months follow up did not predict the composite endpoint. 26% of patients showed hyponatremia at baseline prior to CRT implantation, while it was present in 19.9% of patients 1 month (p = 0.003) and in 16% (p 7.0 mmol/l) (HR 1.61 [1.05–2.46], p = 0.03) at baseline were associated with an increased risk of unplanned heart failure hospitalisation and all-cause mortality after CRT implantation. Conclusions: A change towards hyponatremia when observed 6 months after CRT implantation may predict a worse clinical outcome. Additionally, renal impairment and higher diuretic doses are associated with an increased risk of mortality in the population analysed.
- Published
- 2017
19. The Cardio-Toxicity of Chloroquine, Hydroxychloroquine, Azithromycin and Tocilizumab: Implications for the Treatment of SARS-CoV-2 (COVID-19)
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Sarah Birkhoelzer, Elena Cowan, and Kaushik Guha
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- 2020
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20. 83 Characteristics and outcomes of patients with suspected heart failure and elevated natriuretic peptides referred to a nice-compliant heart failure clinic
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Alice Zheng, Legate Philip, Geraint Morton, Elena Cowan, Paul R. Kalra, and Kaushik Guha
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medicine.medical_specialty ,education.field_of_study ,Ejection fraction ,business.industry ,Mortality rate ,Public health ,Population ,Nice ,medicine.disease ,Heart failure ,Internal medicine ,Cohort ,medicine ,Heart failure with preserved ejection fraction ,business ,education ,computer ,computer.programming_language - Abstract
Introduction Chronic heart failure (HF) represents a substantial and growing public health and financial burden and has a poor prognosis. National Institute for Health and Care Excellence (NICE) guidelines and quality standards recommend timely specialist assessment for patients with suspected HF and raised natriuretic peptides. However, data on the outpatient population assessed, diagnostic rates of HF and outcomes for patients on this pathway are not known. This is in contrast to patients hospitalised with acute HF who are well described in the UK. Our aim is to describe real world data from a large patient cohort with suspected HF investigated according to NICE protocols. Methods All patients with suspected HF and elevated NTproBNP referred to a dedicated HF clinic between January 2014 – December 2016 were included. Patients underwent specialist assessment, echocardiography and diagnosis in a one-stop clinic within 2 weeks (NTproBNP>2000pg/ml) or 6 weeks (NTproBNP 400–2000pg/ml) in accordance with NICE guidelines. Patient baseline characteristics and co-morbidities were recorded prospectively. 1 year all-cause hospitalisation (1 or more admissions) and mortality rates were retrospectively calculated from the date of NTproBNP measurement using hospital coding data and electronic patient records. Outcomes were compared between those referred on the 2 and 6 week pathways; and between those diagnosed with Heart Failure (HF) vs. Not Heart Failure (NHF) after specialist assessment. Results Out of 1042 consecutive patients referred, 1013 had NTproBNP measured and were included. 544 (54%) were on the 2-week and 469 (46%) on the 6-week pathway. 543 (54%) were diagnosed with HF; 300 (55%) with Heart Failure with reduced Ejection Fraction (HFrEF) and 243 (45%) with Heart Failure with preserved Ejection Fraction (HFpEF). 454 (45%) were diagnosed as NHF. A diagnosis of HF was made in 383 (70%) in the 2-week and 160 (34%) in the 6-week pathway (p For the entire population the 1-year hospitalisation rate was 324/1013 (32%) and mortality 112/1013 (11%). There were significantly higher rates of both mortality (88 [16%] vs 24 [5%] p Conclusion The prognosis is relatively poor for outpatients with suspected chronic HF and raised natriuretic peptides, with high rates of adverse outcomes observed despite specialist investigation in accordance within NICE timeframes. This is regardless of the final diagnosis, as mortality is comparable between HF and NHF groups. The proportion of patients diagnosed with HF in the 2-week pathway was high. As expected, patients referred via the 2-week pathway had significantly higher rates of both mortality and hospitalisation. This study provides valuable real world data and insight into an important population, which will help inform discussions with patients and shape chronic HF services. Conflict of Interest None
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- 2019
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21. 54 The frequency and impact of procedural distractions and interruptions in the adult cardiac catheterisation laboratory
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Kaushik Guha, Geraint Morton, Peter Brennan, Navneet Kalsi, Kalaivani Mahadevan, Helena Bolam, Elena Cowan, and Paul R. Kalra
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medicine.medical_specialty ,Operating theatres ,business.industry ,Workload ,Cardiac catheterisation ,medicine.disease ,Patient safety ,Distraction ,Cardiac procedures ,Physical therapy ,medicine ,Observational study ,Myocardial infarction ,business - Abstract
Purpose To understand factors contributing to disturbances during cardiac procedures, including frequency and nature of distractions, along with assessment of operator ‘work-load’ through NASA Task-load indices. Methods A single centre prospective observational study was conducted on 194 consecutive patients undergoing cardiac procedures in 3 adult cardiac CL’s over a period of 4 weeks. A distraction pro-forma was completed for each case by CL team members (predominantly physiologists), documenting procedural logistics and referring both to the level of risk of the procedure at that time (table 1) and frequency, nature and magnitude of each distraction/interruption (table 2). The primary operator completed a NASA Task-load questionnaire rating parameters to include mental and physical effort, level of frustration, time–urgency, and overall effort and performance on a scale of 1 – 21. Results 264 distractions occurred in 106 procedures (55% of total); 80% were not relevant to the case being undertaken; 13% were due to emergencies occurring in the ‘Hot- Lab’ predominantly to discuss potential ST-elevation myocardial infarction requiring emergency angioplasty. Frequency of distractions per case ranged from 1 to 16, with an average of 2.5; 16% (n=43) of these were documented to occur during high-risk stages (categories 3 or 4) of the procedure. Operator rating of NASA task-load parameters demonstrated higher levels of ‘mental’ and ‘physical’ workload and ‘effort’ when distractions occurred (figure 1). Conclusion In this first description of human factors in the adult cardiac CL we have shown that less than half of all procedures are completed without interruption/distraction. The vast majority of these are unnecessary and without relation to the case or list. We therefore propose the introduction of a ‘sterile cockpit’ environment in the CL, as has been adapted from the aviation industry within surgical operating theatres, to minimise non-emergent interruptions and disturbances, in an attempt to improve operator conditions and overall patient safety. Conflict of Interest Nil
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- 2019
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22. Ivabradine: A Current Overview
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Kaushik Guha, Christopher J. Allen, Rakesh Sharma, and Adam Hartley
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0301 basic medicine ,medicine.medical_specialty ,Side effect ,Acute decompensated heart failure ,Myocardial Ischemia ,Ventricular Dysfunction, Left ,03 medical and health sciences ,0302 clinical medicine ,Heart Rate ,Internal medicine ,medicine ,Animals ,Humans ,Ivabradine ,Pharmacology (medical) ,General Pharmacology, Toxicology and Pharmaceutics ,Adverse effect ,Heart Failure ,business.industry ,Cardiovascular Agents ,General Medicine ,Benzazepines ,medicine.disease ,Clinical trial ,030104 developmental biology ,Drug development ,Heart failure ,Cardiology ,Observational study ,business ,030217 neurology & neurosurgery ,medicine.drug - Abstract
Ivabradine, acting on the funny channel (If) in the sino-atrial node, reduces myocardial oxygen demand without inducing hypotension. It was developed as a specific bradycardic agent in the 1980s, avoiding the adverse effects of more traditional antianginal agents (beta-blockers and calcium channel antagonists). This has seen significant interest in this first-in-class treatment, and is perceived as a promising drug in the management of ischaemic heart disease and heart failure. There has been much clinical research conducted exploring its role in these fields, to try to elucidate potential benefits and target patient group. The side effect profile of ivabradine ensures it is well tolerated, and consistently leads to a reduction in heart rate. This review discusses the drug development and trial data in ischaemic heart disease and chronic left ventricular systolic dysfunction. Key clinical trials and observational studies are discussed in depth to examine potential explanations of unexpected or diverging results. The emerging role of ivabradine in acute decompensated heart failure is explored with recent trial data, providing a potential novel treatment avenue in this difficult to manage patient cohort. The role of intravenous ivabradine, as a beneficial tool in the acute hospital setting, when oral medication is not ideal, or where fast onset of action is required, in cardiac computerised tomography for example, is also discussed. Future directions for research are highlighted, including options for further elucidating unexplained results from previous studies.
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- 2016
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23. The efficacy of Maitland's mobilization on the individuals with sacroiliac joint dysfunction
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Kaushik Guha
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medicine.medical_specialty ,Mobilization ,Sacroiliac joint dysfunction ,business.industry ,Physical therapy ,Medicine ,medicine.symptom ,business - Published
- 2016
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24. Epidemiology of heart failure
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Kaushik Guha and Theresa McDonagh
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medicine.medical_specialty ,business.industry ,Heart failure ,Epidemiology ,medicine ,medicine.disease ,business ,Intensive care medicine - Abstract
Developments within the field of heart failure have steadily advanced over the last four decades. Techniques to diagnose, manage, and improve the plight of a patient with heart failure have been revolutionized during this time period. In addition, there has been a wealth of epidemiological data accompanying these scientific achievements. This has led to an enhanced understanding of the disease on a population basis. The burden of heart failure has meant that robust pertinent data are now available on its incidence, prevalence, impact on health resources, and prognosis. This chapter gives a brief overview of the field and hopefully will stimulate further interest.
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- 2018
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25. 41 Patients with possible heart failure and raised natriuretic peptides have poor outcomes regardless of final diagnosis
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Geraint Morton, Paul R. Kalra, Alice Zheng, and Kaushik Guha
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medicine.medical_specialty ,Ejection fraction ,Adverse outcomes ,business.industry ,medicine.disease ,Predictive value ,Single centre ,Internal medicine ,Diabetes mellitus ,Heart failure ,medicine ,Population study ,In patient ,business - Abstract
Introduction Natriuretic peptides, including NTproBNP, are elevated in heart failure (HF) and correlate with prognosis. They also predict the development of HF and are associated with an adverse outcome in patients without overt HF. NICE CG108 mandates that patients with potential HF and elevated natriuretic peptides are evaluated with echocardiography and specialist assessment. There are few data on how outcomes compare based on whether the final diagnosis is HF or not after assessment. Furthermore, the incidence of subsequent HF in patients where the diagnosis is initially rejected is unknown. Methods All patients with possible HF and raised NTproBNP referred to a single centre specialist HF clinic in a 1 year period from March 2014 were identified. Patients were seen within 2 (NTproBNP >2000 pg/ml) or 6 (NTproBNP 4002000 pg/ml) weeks of referral in line with NICE CG108. Hospital coding data and electronic patient records were used to identify all-cause unplanned hospital admissions and mortality over a minimum follow up period of 2 years. Event rates were compared between patients with a final diagnosis of HF and those without (no heart failure-NHF). We also recorded how many NHF patients went on to develop HF. Results 235 patients were seen and form the study population. Mean follow up was 29±4 months. 133 (56%) patients were diagnosed with HF; 63 (47%) with HF with Reduced Ejection Fraction (HFREF) and 70 (53%) with HF with Preserved Ejection Fraction (HFPEF). 102 (43%) were diagnosed as NHF. Comorbidities in the NHF group are shown in table 2. Patients in the two groups were similar in age. HF patients had much higher NTproBNP levels and higher rates of AF and diabetes (table 1). Despite this, there were no differences in either mortality (HF 23% and NHF 22%; p=0.75) or hospitalisations (HF 41% and NHF 40%; p=0.95) between the groups; figure 1. 7 (7%) of NHF patients were subsequently diagnosed with HF. Negative predictive value of a NHF diagnosis was 93%. Conclusions Patients with suspected HF and raised natriuretic peptides are at high risk of adverse outcomes regardless of the final diagnosis after specialist evaluation. Much higher NTproBNP levels and higher rates of diabetes and AF in the HF group did not translate into a worse prognosis. This may be due to the fact that patients with a HF (in particular HFREF) diagnosis were considered for evidence based therapies. The adverse outcome in the NHF group is not explained by unrecognised HF at assessment as subsequent presentations with HF were uncommon. These findings should be taken into consideration when framing our discussions with all patients with elevated NTproBNP regarding their prognosis.
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- 2018
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26. PARADIGM - HF: The Rise of the Arnis
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Kaushik Guha, Rakesh Sharma, and Sneha Varkey
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Heart Failure ,Pharmacology ,medicine.medical_specialty ,Ejection fraction ,business.industry ,Angiotensin-Converting Enzyme Inhibitors ,General Medicine ,Systolic function ,030204 cardiovascular system & hematology ,medicine.disease ,Pharmacological treatment ,Paradigm hf ,03 medical and health sciences ,0302 clinical medicine ,Concomitant ,Internal medicine ,Heart failure ,Renin–angiotensin system ,medicine ,Cardiology ,Humans ,030212 general & internal medicine ,Intensive care medicine ,business - Abstract
Heart failure remains a widespread commonly encountered clinical condition. It is responsible for increased healthcare expenditure, driven by frequent and often prolonged hospital admissions associated with an increased mortality. A clinically useful classification of the syndrome is, patients with left ventricular systolic impairment (Heart Failure and reduced ejection fraction, HFREF) and patients with preserved left ventricular systolic function (HFPEF). The pharmacological treatment for patients with HFREF has evolved over the last twenty five years, focusing on modulation of the neurohormonal activation which represents a hallmark of this condition. This has led to the development of a stepwise treatment algorithm predominately based on inhibition of the renin angiotensin aldosterone pathway and counteracting sympathetic over-activation. In particular since the early trials in chronic heart failure (CHF) demonstrated a significant mortality benefit with ACE-inhibitors, subsequent studies have been conducted in conjunction with these drugs. The rationale being that it would be unethical to trial any new agent without the concomitant use of ACE-inhibitors. The recent publication of the PARADIGM -HF study has challenged this convention by trialling a novel pharmacological agent against an ACE-inhibitor in a landmark trial. The review sets out the current pharmacological treatment for patients with heart failure and discusses the recent findings with this novel class of medication.
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- 2016
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27. An unusual cause of chest pain: the importance of acute aortic syndromes
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P McParland, Kaushik Guha, S Russell, and L Shaw
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Aged, 80 and over ,Chest Pain ,Hematoma ,medicine.medical_specialty ,Brachial Artery ,Arteriosclerosis ,business.industry ,Aortic Diseases ,MEDLINE ,Thrombosis ,Syndrome ,General Medicine ,Chest pain ,Text mining ,Acute Disease ,medicine ,Axillary Artery ,Humans ,Female ,medicine.symptom ,business ,Intensive care medicine - Published
- 2019
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28. The impact of age on clinical outcomes following cardiac resynchronisation therapy
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B. Chandrasekaran, Kaushik Guha, Dimitrios Konstantinou, Rakesh Sharma, B. N. Modi, Theresa A. McDonagh, Z. Khalique, and Lilian Mantziari
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Adult ,Male ,medicine.medical_specialty ,Comorbidity ,Disease ,Sensitivity and Specificity ,Cardiac Resynchronization Therapy ,Age Distribution ,Risk Factors ,Physiology (medical) ,Internal medicine ,Outcome Assessment, Health Care ,Prevalence ,medicine ,Clinical endpoint ,Humans ,Hospital Mortality ,Aged ,Aged, 80 and over ,Heart Failure ,Excess mortality ,End point ,business.industry ,Age Factors ,Reproducibility of Results ,Length of Stay ,Middle Aged ,Prognosis ,medicine.disease ,United Kingdom ,Survival Rate ,Treatment Outcome ,Heart failure ,Cardiology ,Female ,Cardiology and Cardiovascular Medicine ,business - Abstract
Cardiac resynchronisation therapy (CRT) is an established treatment for selected patients with symptomatic left ventricular (LV) systolic dysfunction. Heart failure (HF) is primarily a disease of the elderly; however, these patients are underrepresented in CRT trials. Our aim was to evaluate the impact of age on clinical outcomes following CRT. A consecutive series of 177 patients was identified and divided into those aged ≤75 years (n = 131, mean ± SD 62.1 ± 11.2 years) and those aged >75 years (n = 46, mean ± SD 80.7 ± 4.1 years). The primary end point was a composite of all-cause mortality or HF hospitalisation. During a median ± IQR follow up of 28.5 ± 33.7 months, the event rate for the primary end point was significantly higher in the elderly compared to younger patients (20.1 vs. 11.1 %, respectively, logrank p = 0.020). This was mainly driven by an excess mortality rate among those aged >75 years (10 vs. 4.7 %, respectively, logrank p = 0.018) whereas HF hospitalisation rates were similar between groups (10 vs. 6.4 %, respectively, logrank p = 0.301). After adjusting for comorbidities and ICD status, the difference in the composite end point rates was attenuated and no longer significant (HR 1.580, 95 % CI 0.899–2.778; p = 0.112 for >75 vs. ≤75 years). Notably, both groups demonstrated similar response rates to CRT in terms of symptomatic improvement, reverse LV remodelling and neurohormonal activation. CRT is equally effective in the elderly as in younger patients to reduce adverse clinical outcomes. For those who fulfil the prerequisite selection criteria, it should be considered as a valid therapeutic option.
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- 2013
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29. The Prevalence and Prognostic Significance of Right Ventricular Systolic Dysfunction in Nonischemic Dilated Cardiomyopathy
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Jahanzaib Khwaja, Andrew Jabbour, Tapesh Pakrashi, Michael Roughton, Sanjay K Prasad, Dudley J. Pennell, Tristan D.H. Brown, Martin R. Cowie, John-Paul Carpenter, Kaushik Guha, Rakesh Sharma, Sadaf Raza, Kishen Morarji, Ankur Gulati, Emmanouil Liodakis, Ravi Assomull, Tevfik F Ismail, Stuart A. Cook, Ricardo Wage, Francisco Alpendurada, and Nizar Ismail
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Adult ,Cardiomyopathy, Dilated ,Male ,medicine.medical_specialty ,Ventricular Dysfunction, Right ,Kaplan-Meier Estimate ,Predictive Value of Tests ,Risk Factors ,Physiology (medical) ,Internal medicine ,Prevalence ,Clinical endpoint ,medicine ,Humans ,Prospective Studies ,Aged ,Ejection fraction ,medicine.diagnostic_test ,business.industry ,Hazard ratio ,Stroke Volume ,Magnetic resonance imaging ,Dilated cardiomyopathy ,Middle Aged ,Prognosis ,medicine.disease ,Magnetic Resonance Imaging ,Confidence interval ,Transplantation ,Heart failure ,Ventricular Function, Right ,Cardiology ,Female ,Cardiology and Cardiovascular Medicine ,business ,Follow-Up Studies - Abstract
Background— Cardiovascular magnetic resonance is the gold-standard technique for the assessment of ventricular function. Although left ventricular volumes and ejection fraction are strong predictors of outcome in dilated cardiomyopathy (DCM), there are limited data regarding the prognostic significance of right ventricular (RV) systolic dysfunction (RVSD). We investigated whether cardiovascular magnetic resonance assessment of RV function has prognostic value in DCM. Methods and Results— We prospectively studied 250 consecutive DCM patients with the use of cardiovascular magnetic resonance. RVSD, defined by RV ejection fraction ≤45%, was present in 86 (34%) patients. During a median follow-up period of 6.8 years, there were 52 deaths, and 7 patients underwent cardiac transplantation. The primary end point of all-cause mortality or cardiac transplantation was reached by 42 of 86 patients with RVSD and 17 of 164 patients without RVSD (49% versus 10%; hazard ratio, 5.90; 95% confidence interval [CI], 3.35–10.37; P P P P =0.006). Assessment of RVSD improved risk stratification for all-cause mortality or cardiac transplantation (net reclassification improvement, 0.31; 95% CI 0.10–0.53; P =0.001). Conclusions— RVSD is a powerful, independent predictor of transplant-free survival and adverse heart failure outcomes in DCM. Cardiovascular magnetic resonance assessment of RV function is important in the evaluation and risk stratification of DCM patients.
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- 2013
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30. Clinical utility and prognostic value of left atrial volume assessment by cardiovascular magnetic resonance in non‐ischaemic dilated cardiomyopathy
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Nizar Ismail, Kaushik Guha, Francisco Alpendurada, Martin R. Cowie, Jahanzaib Khwaja, Kishen Morarji, Michael Roughton, Emmanouil Liodakis, Tevfik F Ismail, Aamir Ali, Sanjay K Prasad, Dudley J. Pennell, Ankur Gulati, Ricardo Wage, Arun J Baksi, Raad H. Mohiaddin, Sadaf Raza, Ravi Assomull, Stuart A. Cook, Andrew Jabbour, Rameen Shakur, and Tristan D.H. Brown
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Adult ,Cardiomyopathy, Dilated ,Male ,medicine.medical_specialty ,Cardiac Volume ,Magnetic Resonance Imaging, Cine ,Cohort Studies ,Risk Factors ,Internal medicine ,medicine ,Clinical endpoint ,Humans ,Heart Atria ,Prospective Studies ,Aged ,Observer Variation ,Body surface area ,medicine.diagnostic_test ,business.industry ,Hazard ratio ,Magnetic resonance imaging ,Dilated cardiomyopathy ,Middle Aged ,Prognosis ,medicine.disease ,Confidence interval ,Transplantation ,Heart failure ,Cardiology ,Heart Transplantation ,Female ,Cardiology and Cardiovascular Medicine ,business ,Follow-Up Studies - Abstract
Aims Echocardiographic studies have shown that left atrial volume (LAV) predicts adverse outcome in small heart failure (HF) cohorts of mixed aetiology. However, the prognostic value of LAV in non-ischaemic dilated cardiomyopathy (DCM) is unknown. Cardiovascular magnetic resonance (CMR) allows accurate and reproducible measurement of LAV. We sought to determine the long-term prognostic significance of LAV assessed by CMR in DCM. Methods and results We measured LAV indexed to body surface area (LAVi) in 483 consecutive DCM patients referred for CMR. Patients were prospectively followed up for a primary endpoint of all-cause mortality or cardiac transplantation. During a median follow-up of 5.3 years, 75 patients died and 9 underwent cardiac transplantation. After adjustment for established risk factors, LAVi was an independent predictor of the primary endpoint [hazard ratio (HR) per 10 mL/m2 1.08; 95% confidence interval (CI) 1.01–1.15; P = 0.022]. LAVi was also independently associated with the secondary composite endpoints of cardiovascular mortality or cardiac transplantation (HR per 10 mL/m2 1.11; 95% CI 1.04–1.19; P = 0.003), and HF death, HF hospitalization, or cardiac transplantation (HR per 10 mL/m2 1.11; 95% CI 1.04–1.18; P = 0.001). The optimal LAVi cut-off value for predicting the primary endpoint was 72 mL/m2. Patients with LAVi >72 mL/m2 had a three-fold elevated risk of death or transplantation (HR 3.00; 95% CI 1.92–4.70; P < 0.001). LAVi provided incremental prognostic value for the prediction of transplant-free survival (net reclassification improvement 0.17; 95% CI 0.05–0.29; P = 0.002). Conclusions LAVi is a powerful independent predictor of transplant-free survival and HF outcomes in DCM. Assessment of LAV improves risk stratification in DCM and should be incorporated into routine CMR examination.
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- 2013
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31. Audit of a tertiary heart failure outpatient service to assess compliance with NICE guidelines
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Rakesh Sharma, Kaushik Guha, Hayley Pryse-Hawkins, Christopher J. Allen, Laura Fallon, Ali Vazir, Martin R. Cowie, Alexander R. Lyon, Sumir Chawla, Vicki Chambers, Imperial College Trust, and British Heart Foundation
- Subjects
Male ,medicine.medical_treatment ,Nice ,Cardiac rehabilitation ,RATIONALE ,Angiotensin-Converting Enzyme Inhibitors ,030204 cardiovascular system & hematology ,Ventricular Dysfunction, Left ,0302 clinical medicine ,DESIGN ,London ,Ambulatory Care ,030212 general & internal medicine ,General Clinical Medicine ,computer.programming_language ,Mineralocorticoid Receptor Antagonists ,Aged, 80 and over ,heart failure management ,Rehabilitation ,Ejection fraction ,biology ,Dilated cardiomyopathy ,General Medicine ,Middle Aged ,EUROPEAN-SOCIETY ,Practice Guidelines as Topic ,Female ,Ivabradine ,Life Sciences & Biomedicine ,left ventricular systolic dysfunction ,medicine.drug ,medicine.medical_specialty ,ESC ,03 medical and health sciences ,Angiotensin Receptor Antagonists ,Medicine, General & Internal ,Internal medicine ,General & Internal Medicine ,medicine ,Humans ,METAANALYSIS ,Aged ,Heart Failure ,Science & Technology ,business.industry ,Angiotensin-converting enzyme ,1103 Clinical Sciences ,Audit ,medicine.disease ,Heart failure ,REGISTRY ,Emergency medicine ,biology.protein ,Etiology ,business ,computer - Abstract
The National Institute for Health and Care Excellence (NICE) updated its guidelines for chronic heart failure (HF) in 2010. This re-audit assessed interim improvement as compared with an audit in 2011. Patients with HF (preserved and reduced ejection fraction) attending a tertiary cardiac centre over a 2-year period (January 2013–December 2014) were audited. The data collected included demographics, HF aetiology, medications, clinical parameters and cardiac rehabilitation. In total, 513 patients were audited. Compared with 2011, male preponderance (71%) and age (68±14 years, (Mean ± SD)) were similar. 73% of patients lived outside of London. HF aetiologies included ischaemic heart disease (37% versus 40% in 2011), dilated cardiomyopathy (26% versus 20%) primary valve disease (13% versus 12%). For patients with left ventricular systolic dysfunction (n=434, 85% of patients audited) 89% were taking beta-blockers (compared with 77% in 2011), 91% an angiotensin converting enzyme inhibitor or angiotensin receptor blocker (86% in 2011) and 56% a mineralocorticoid receptor antagonist (44% in 2011); 6% were prescribed ivabradine. All patients were reviewed at least 6-monthly. Although 100% of patients were educated about exercise, only 21 (4%) enrolled in a supervised exercise programme. This audit demonstrated high rates of documentation, follow-up and compliance with guideline-based medical therapies. A consistent finding was poor access to cardiac rehabilitation.
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- 2016
32. The patient with left ventricular systolic dysfunction now and in the future
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William Kenworthy, Rakesh Sharma, and Kaushik Guha
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medicine.medical_specialty ,business.industry ,Medication Therapy Management ,Disease Management ,General Medicine ,030204 cardiovascular system & hematology ,medicine.disease ,Clinical trial ,Cardiac Resynchronization Therapy ,03 medical and health sciences ,Ventricular Dysfunction, Left ,0302 clinical medicine ,Heart failure ,Chronic Disease ,Heart Function Tests ,medicine ,Humans ,030212 general & internal medicine ,Intensive care medicine ,business ,Heart Failure, Systolic - Abstract
This review provides a concise overview of the current understanding of chronic heart failure, focusing on the landmark clinical trials that form the basis of clinical management of patients with left ventricular systolic dysfunction.
- Published
- 2016
33. A case of napkin ring calcification of aorta following traumatic transection
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Alice Davies, James Sneddon, and Kaushik Guha
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Aorta ,medicine.medical_specialty ,medicine.diagnostic_test ,business.industry ,030208 emergency & critical care medicine ,Computed tomography ,030230 surgery ,Ring (chemistry) ,medicine.disease ,03 medical and health sciences ,0302 clinical medicine ,medicine.artery ,Medicine ,Radiology ,Cardiology and Cardiovascular Medicine ,Nuclear medicine ,business ,Calcification - Abstract
V tomto clanku popisujeme dosud nepopsaný připad, a to pacientky, ktera přežila akutni aortalni syndrom bez chirurgicke intervence.
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- 2018
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34. Drug therapies for heart failure
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Theresa McDonagh and Kaushik Guha
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Drug ,medicine.medical_specialty ,business.industry ,Heart failure ,media_common.quotation_subject ,medicine ,Intensive care medicine ,medicine.disease ,business ,media_common - Published
- 2012
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35. Relation of Dosing of the Renin–Angiotensin System Inhibitors After Cardiac Resynchronization Therapy to Long-Term Prognosis
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Lilian Mantziari, Rakesh Sharma, Theresa McDonagh, Zohya Khalique, and Kaushik Guha
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Male ,medicine.medical_specialty ,Outpatient Clinics, Hospital ,medicine.medical_treatment ,Cardiac resynchronization therapy ,Angiotensin-Converting Enzyme Inhibitors ,Kaplan-Meier Estimate ,Cardiac Resynchronization Therapy ,Angiotensin Receptor Antagonists ,Internal medicine ,London ,Renin–angiotensin system ,Perindopril ,Humans ,Medicine ,Dosing ,Enalapril ,Aged ,Proportional Hazards Models ,Retrospective Studies ,Heart Failure ,Dose-Response Relationship, Drug ,business.industry ,Prognosis ,medicine.disease ,Hospitalization ,Target dose ,Blood pressure ,Heart failure ,Cardiology ,Female ,Cardiology and Cardiovascular Medicine ,business ,medicine.drug - Abstract
Dosing of angiotensin-converting enzyme (ACE) inhibitors and angiotensin receptor blockers (ARBs) in patients with heart failure (HF) treated with cardiac resynchronization therapy (CRT) may affect long-term outcomes. Retrospective data were collected at baseline and follow-up for consecutive patients who had CRT implanted and attended the institutional specialist HF pacing clinic. The study end point was death from any cause or hospitalization for worsening HF 24 months after implantation. Ninety-one patients (72 men, 68 ± 12 years old) with decreased left ventricular ejection fraction (24 ± 6%) were included. At baseline 85 patients (93%) were on ACE inhibitors/ARBs. At 6 months 3 patients had died and 86 of 88 (98%) were on ACE inhibitors/ARBs. Doses were uptitrated from 55 ± 35% of target dose (TD) at baseline to 62 ± 31% TD at month 6 (p = 0.018), whereas blood pressure was unchanged. Patients treated with50% TD of ACE inhibitors/ARBs (n = 20) at month 6 had worse 24-month event-free survival than those on 50% to 99% TD (n = 38, p = 0.011, log-rank test) or ≥100% TD (n = 30, p = 0.007, log-rank test). Failure to achieve a dose ≥50% TD of ACE inhibitors/ARBs at 6 months after CRT implantation was an independent predictor of all-cause mortality or hospitalization (hazard ratio 3.99, 95% confidence interval 1.66 to 9.62, p = 0.002) after adjustment for potential confounders including age, estimated glomerular filtration rate, diabetes and New York Heart Association class. In conclusion optimal dosing of ACE inhibitors/ARBs is an independent predictor of prognosis in patients with HF treated with CRT and it can be achieved by a structured follow-up within a specialized HF pacing clinic.
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- 2012
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36. Acute chest pain of cardiovascular aetiology: a diagnostic dilemma
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Raad H. Mohiaddin, Ankur Gulati, Nizar Ismail, Cheuk F Chan, Sadaf Raza, Ravi Assomull, Nicholas Bunce, Tristan D.H. Brown, and Kaushik Guha
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Male ,Chest Pain ,medicine.medical_specialty ,Aortic Diseases ,Myocardial Infarction ,Gadolinium ,Chest pain ,Diagnosis, Differential ,Internal medicine ,medicine.artery ,Ascending aorta ,medicine ,Humans ,Thoracic aorta ,Myocardial infarction ,Aortic dissection ,Aorta ,medicine.diagnostic_test ,business.industry ,Mediastinum ,General Medicine ,Middle Aged ,medicine.disease ,medicine.anatomical_structure ,cardiovascular system ,Cardiology ,Radiology ,medicine.symptom ,Chest radiograph ,business ,Magnetic Resonance Angiography - Abstract
A 61-year-old gentleman was admitted to his local hospital with a 5-h history of central chest pain. He was an ex-smoker with no other cardiac risk factors or history of ischaemic heart disease. ECG on presentation demonstrated ST elevation in leads 1 and aVL consistent with acute myocardial infarction (MI) and he was therefore thrombolysed with tenecteplase. Following thrombolysis, his ST segment elevation resolved and his chest pain subsided completely. Peak CK was 1015 U/l (24–173 U/l) and troponin T 3.65 ug/l (0–0.10 ug/l). A routine PA chest radiograph revealed a widened superior mediastinum, raising the possibility of aortic dissection (Figure 1). An urgent contrast enhanced CT scan was therefore requested which demonstrated a type A aortic dissection with an aneurysmal ascending aorta (Figure 2). Figure 1. PA chest radiograph shows widening of the mediastinum and ectasia of the descending thoracic aorta. The lung fields are clear. Figure 2. CT aorta demonstrates type A aortic dissection. In the dilated ascending aorta there is thrombus within the false lumen (asterisk). The dissection can be seen to extend into the descending thoracic aorta (arrow). T = true lumen. Despite the CT findings, the patient remained well following thrombolysis with no subsequent clinical sequelae of acute aortic dissection. Further investigation with transthoracic echocardiography revealed good left ventricular function with no pericardial effusion. There was mild central aortic regurgitation but …
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- 2011
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37. Treatment of left ventricular non-compaction with cardiac resynchronization therapy
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Rakesh Sharma, I Roussin, Sanjay K Prasad, Thomas A. Treibel, Alison Duncan, Kaushik Guha, Theresa A. McDonagh, and C Brookes
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Heart Defects, Congenital ,medicine.medical_specialty ,medicine.medical_treatment ,Cardiomyopathy ,Diastole ,Cardiac resynchronization therapy ,Sudden cardiac death ,Cardiac Resynchronization Therapy ,Electrocardiography ,Cardiac magnetic resonance imaging ,Internal medicine ,medicine ,Humans ,Heart Failure ,medicine.diagnostic_test ,business.industry ,General Medicine ,Middle Aged ,medicine.disease ,Magnetic Resonance Imaging ,medicine.anatomical_structure ,Ventricle ,cardiovascular system ,Cardiology ,Left ventricular noncompaction ,Female ,Radiology ,business - Abstract
Left ventricular non-compaction (LVNC) is a genetic cardiomyopathy often familial and autosomal dominant. It is characterized by morphological abnormalities affecting the left ventricular myocardium with prominent trabeculations of the inner surface of the ventricle, often extending deep into the ventricular wall. There are no pathognomonic histological findings with normal myocytes being interspersed with areas of fibrosis. Both familial and sporadic forms of non-compaction have been described, the prevalence being estimated to be between 0.01% and 0.27%.1 The diagnosis of LVNC calls for multimodal imaging. Echocardiography, being the most widely available cardiac imaging modality, may raise the initial suspicion of LVNC and can also provide physiological data. See Table 1. Cardiac Magnetic Resonance Imaging (CMR) offers detailed visualization of the extent of non-compaction and supplemental morphological information.4 It should be noted that the current criteria for this condition may result in over diagnosis. View this table: Table 1 Criteria for the diagnosis of isolated left ventricular non-compaction A correct diagnosis is important both for subsequent treatment and also to enable appropriate genetic counselling and familial screening. It is suggested that first degree relatives should be screened. CMR is the best imaging modality currently, though other techniques in the future may be able to improve on diagnostic accuracy. LVNC is associated with LV systolic dysfunction, due to subendocardial hypoperfusion and microcirculation dysfunction, and at a lesser extent to diastolic dysfunction, ventricular arrhythmias, sudden cardiac death and systemic embolism. There is no specific treatment for LVNC at present, with the …
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- 2011
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38. Atrial fibrillation
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Kaushik, Guha
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Critical Illness ,Thromboembolism ,Atrial Fibrillation ,Humans ,General Medicine ,Letters to the Editor - Published
- 2019
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39. British Society of Heart Failure 2009 meeting report
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Kaushik Guha and Theresa McDonagh
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medicine.medical_specialty ,business.industry ,Specialist nurse ,General Medicine ,Subspecialty ,medicine.disease ,Representation (politics) ,Clinical Practice ,Multidisciplinary approach ,Family medicine ,Heart failure ,Internal Medicine ,medicine ,Cardiology and Cardiovascular Medicine ,business ,Intensive care medicine ,Accreditation - Abstract
The 12th Annual Meeting of the British Society of Heart Failure was held in London (UK). As heart failure has evolved into an accredited subspecialty in its own right, the conference has become increasingly well attended. This year there were over 400 delegates from around the world. As per clinical practice, there were large numbers of multidisciplinary members including a strong representation from the heart failure specialist nurse division.
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- 2010
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40. How to Improve Time to Diagnosis in Acute Heart Failure – Clinical Signs and Chest X-ray
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Kaushik Guha, Christopher J Allen, and Rakesh Sharma
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medicine.medical_specialty ,Population ageing ,medicine.diagnostic_test ,business.industry ,Improving Time to Diagnosis ,Incidence (epidemiology) ,Gold standard ,Physical examination ,medicine.disease ,Heart failure ,Medicine ,In patient ,business ,Intensive care medicine ,Developed country ,Time to diagnosis - Abstract
Acute heart failure (AHF) is a leading cause of hospitalisation in developed nations with stubbornly poor outcomes in both the short and long term. Furthermore, alongside an ageing population the incidence continues to increase. Contemporary practice guidelines accordingly emphasise the importance of early recognition of heart failure in the acute setting to facilitate the timely instigation of key investigations, appropriate management and access to specialist care; all of which improve outcome. However, the diagnosis of AHF is often challenging, with no gold standard diagnostic test and presenting clinical features that may be non-specific, particularly in the elderly where they may be atypical, or masked by co-morbidity. This short review explores the main clinical signs and radiographic changes in patients with AHF relevant to clinical practice in accordance with the best available evidence.
- Published
- 2015
41. Giant Right Coronary Artery Aneurysm Masquerading as a Pulmonary Embolus
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Kaushik Guha, James Sneddon, Ansuman Saha, and Alexander W Y Chen
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Aged, 80 and over ,Male ,medicine.medical_specialty ,business.industry ,Coronary Aneurysm ,medicine.disease ,Coronary Vessels ,Diagnosis, Differential ,PULMONARY EMBOLUS ,Fatal Outcome ,Text mining ,Aneurysm ,Internal medicine ,Right coronary artery ,medicine.artery ,Emergency Medicine ,medicine ,Cardiology ,Humans ,Pulmonary Embolism ,Tomography, X-Ray Computed ,business - Published
- 2016
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42. 2 Sacubitril/valsartan: real world experience of delivery and tolerability
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Kaushik Guha, Paul R. Kalra, Richard Crawley, and Geraint Morton
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medicine.medical_specialty ,education.field_of_study ,Ejection fraction ,business.industry ,Population ,030204 cardiovascular system & hematology ,medicine.disease ,Sacubitril ,03 medical and health sciences ,0302 clinical medicine ,Tolerability ,Valsartan ,Heart failure ,Internal medicine ,medicine ,Outpatient clinic ,030212 general & internal medicine ,Cardiology and Cardiovascular Medicine ,education ,business ,Sacubitril, Valsartan ,medicine.drug - Abstract
Background Based on the PARADIGM-HF study trial, sacubitril/valsartan (SV) was approved by NICE in April 2016 (TA388) for patients with symptomatic heart failure. SV is recommended in patients with a left ventricular ejection fraction (LVEF) 35% despite a stable dose of ACE inhibitor (ACEi) or angiotensin receptor blocker (ARB), and large numbers are potentially eligible for this first-in-class drug. However, there is a lack of real world experience of both drug tolerability and systems for initiation and monitoring in overstretched heart failure services. Methods Suitable patients were identified and started on SV by heart failure specialists. Dedicated, registrar-delivered monitoring and up titration clinics were established. Patients were reviewed 2–4 weekly. Symptoms, vital signs, biochemistry and hospital admissions were recorded at each visit. Once stable on optimal doses, patients were discharged to primary care, as pre-arranged with the District Prescribing Committee. Our initial 6 month experience has been analysed. Results 69 patients (mean age 63.2±11.6 years) were commenced on SV. Mean LVEF 27.5±6.7%; mean baseline eGFR 66.1±21.9 ml/min/1.73m2. Prior to initiation of SV, mean baseline ACEi/ARB dose was equivalent to 16.3±6.7 mg enalapril daily. Overall 68/69 (98.6%) prescriptions of SV were NICE TA388 compliant (1 patient ACEi/ARB intolerant). 9 patients (13.0%) stopped the medication due to adverse effects (PARADIGM-HF 17.8%), whilst another 3 patients (4.3%) were down titrated to a tolerable lower dose. 15.9% of all patients experienced symptomatic hypotension (PARADIGM-HF 14.0%). No episodes of angioedema, nor significant deterioration in renal function (50% reduction in eGFR) were observed. Only 1 (1.4%) patient was hospitalised with decompensated heart failure symptoms, but 3 (4.3%) patients were admitted with syncope secondary to orthostatic hypotension. A total of 36 patients were discharged, with a median ?follow up time of 39 days (IQR 23) from commencement to?stable discharge dose each requiring 1 initiation consultation and a mean of 2.4±1.0 follow up consultations. The majority of patients 25 (69.4%) were discharged at the highest ?dose?–?97/?103 mg BD. 23 (63.9%) of those discharged reported a subjective improvement in symptoms and quality of life. Conclusions Initiation of SV and dose optimisation in clinical practice represents a significant burden of additional work for heart failure teams. Dedicated, registrar-led outpatient clinics to monitor patients commenced on SV by heart failure specialists can successfully address this. Prescribing within NICE TA388 guidelines in real world patients, there were similar drug tolerance and adverse event rates to those reported in PARADIGM-HF. However, the lower mean age within this particular population, who were carefully selected, may indicate that such findings are not representative of the entire heart failure population.
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- 2017
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43. Association of fibrosis with mortality and sudden cardiac death in patients with nonischemic dilated cardiomyopathy
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Francisco Alpendurada, Elisa Di Pietro, Kishen Morarji, Tristan D.H. Brown, Kaushik Guha, Andrew Jabbour, Michael Roughton, Nizar Ismail, Rory O'Hanlon, Sadaf Raza, Dudley J. Pennell, Mary N. Sheppard, Ricardo Wage, Ankur Gulati, Jahanzaib Khwaja, Marc R. Dweck, Alexander R. Lyon, Ravi Assomull, Stuart A. Cook, Tevfik F Ismail, Yousef Daryani, Martin R. Cowie, and Sanjay K Prasad
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Adult ,Cardiomyopathy, Dilated ,Male ,medicine.medical_specialty ,Cardiomyopathy ,Gadolinium ,Risk Assessment ,Ventricular Function, Left ,Sudden cardiac death ,Predictive Value of Tests ,Internal medicine ,Cause of Death ,medicine ,Humans ,cardiovascular diseases ,Prospective Studies ,Cause of death ,Aged ,Ejection fraction ,business.industry ,Myocardium ,Patient Selection ,Dilated cardiomyopathy ,Stroke Volume ,General Medicine ,Middle Aged ,medicine.disease ,Prognosis ,Fibrosis ,Magnetic Resonance Imaging ,United Kingdom ,Defibrillators, Implantable ,Transplantation ,Death, Sudden, Cardiac ,Heart failure ,Ventricular fibrillation ,cardiovascular system ,Cardiology ,Female ,business - Abstract
Risk stratification of patients with nonischemic dilated cardiomyopathy is primarily based on left ventricular ejection fraction (LVEF). Superior prognostic factors may improve patient selection for implantable cardioverter-defibrillators (ICDs) and other management decisions.To determine whether myocardial fibrosis (detected by late gadolinium enhancement cardiovascular magnetic resonance [LGE-CMR] imaging) is an independent and incremental predictor of mortality and sudden cardiac death (SCD) in dilated cardiomyopathy.Prospective, longitudinal study of 472 patients with dilated cardiomyopathy referred to a UK center for CMR imaging between November 2000 and December 2008 after presence and extent of midwall replacement fibrosis were determined. Patients were followed up through December 2011.Primary end point was all-cause mortality. Secondary end points included cardiovascular mortality or cardiac transplantation; an arrhythmic composite of SCD or aborted SCD (appropriate ICD shock, nonfatal ventricular fibrillation, or sustained ventricular tachycardia); and a composite of HF death, HF hospitalization, or cardiac transplantation.Among the 142 patients with midwall fibrosis, there were 38 deaths (26.8%) vs 35 deaths (10.6%) among the 330 patients without fibrosis (hazard ratio [HR], 2.96 [95% CI, 1.87-4.69]; absolute risk difference, 16.2% [95% CI, 8.2%-24.2%]; P.001) during a median follow-up of 5.3 years (2557 patient-years of follow-up). The arrhythmic composite was reached by 42 patients with fibrosis (29.6%) and 23 patients without fibrosis (7.0%) (HR, 5.24 [95% CI, 3.15-8.72]; absolute risk difference, 22.6% [95% CI, 14.6%-30.6%]; P.001). After adjustment for LVEF and other conventional prognostic factors, both the presence of fibrosis (HR, 2.43 [95% CI, 1.50-3.92]; P.001) and the extent (HR, 1.11 [95% CI, 1.06-1.16]; P.001) were independently and incrementally associated with all-cause mortality. Fibrosis was also independently associated with cardiovascular mortality or cardiac transplantation (by fibrosis presence: HR, 3.22 [95% CI, 1.95-5.31], P.001; and by fibrosis extent: HR, 1.15 [95% CI, 1.10-1.20], P.001), SCD or aborted SCD (by fibrosis presence: HR, 4.61 [95% CI, 2.75-7.74], P.001; and by fibrosis extent: HR, 1.10 [95% CI, 1.05-1.16], P.001), and the HF composite (by fibrosis presence: HR, 1.62 [95% CI, 1.00-2.61], P = .049; and by fibrosis extent: HR, 1.08 [95% CI, 1.04-1.13], P.001). Addition of fibrosis to LVEF significantly improved risk reclassification for all-cause mortality and the SCD composite (net reclassification improvement: 0.26 [95% CI, 0.11-0.41]; P = .001 and 0.29 [95% CI, 0.11-0.48]; P = .002, respectively).Assessment of midwall fibrosis with LGE-CMR imaging provided independent prognostic information beyond LVEF in patients with nonischemic dilated cardiomyopathy. The role of LGE-CMR in the risk stratification of dilated cardiomyopathy requires further investigation.
- Published
- 2013
44. Using parallel program characteristics in dynamic processor allocation policies
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Timothy B. Brecht and Kaushik Guha
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Computer Networks and Communications ,Hardware and Architecture ,Modeling and Simulation ,Software - Published
- 1996
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45. Aortic intramural hematoma: a less common and often forgotten cause of acute aortic disease
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Tuan-Peng Chua, Venkatchalam Chandrasekaran, and Kaushik Guha
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Male ,medicine.medical_specialty ,Hematoma ,business.industry ,Radiography ,MEDLINE ,Aortic disease ,Aortic Aneurysm ,Text mining ,Intramural hematoma ,Acute Disease ,Emergency Medicine ,Medicine ,Humans ,Radiology ,business ,Aged - Published
- 2013
46. Epidemiology
- Author
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Dr Kaushik Guha and Theresa McDonagh
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- 2012
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47. A reduction in total isovolumic time with cardiac resynchronisation therapy is a predictor of clinical outcomes
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Rakesh Sharma, Lilian Mantziari, Derek Gibson, Kaushik Guha, Theresa A. McDonagh, and Alison Duncan
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Male ,medicine.medical_specialty ,Time Factors ,Databases, Factual ,Cardiac Volume ,New york heart association ,Coronary artery disease ,Cardiac Resynchronization Therapy ,Predictive Value of Tests ,Internal medicine ,medicine ,Humans ,In patient ,Patient group ,Aged ,Retrospective Studies ,Ultrasonography ,Aged, 80 and over ,Heart Failure ,Ejection fraction ,Left bundle branch block ,business.industry ,Middle Aged ,medicine.disease ,medicine.anatomical_structure ,Treatment Outcome ,Ventricle ,Heart failure ,Cardiology ,Female ,Cardiology and Cardiovascular Medicine ,business ,Follow-Up Studies - Abstract
Total isovolumic time (t-IVT) reflects left ventricular (LV) asynchrony (when the ventricle is neither ejecting nor filling). It is prolonged in left bundle branch block (LBBB). Cardiac resynchronisation therapy (CRT) is a treatment for patients with heart failure, reduced LV ejection fraction and LBBB. CRT shortens t-IVT, but the long-term clinical benefit of such reduction after CRT has not been studied in this patient group.Seventy-three patients who underwent CRT had t-IVT measured before and after CRT implantation. The study end-point was a composite of unplanned heart failure hospitalisation and all-cause mortality.Baseline t-IVT showed considerable scatter: 30 patients had t-IVT values longer than 15s/min (upper 95% limit of normal). The change in t-IVT with CRT was also variable: t-IVT shortened in 50 patients (from 16.2 ± 4.8s/min to 11.7 ± 3.7s/min: group A), and lengthened in 23 patients (from 11.7 ± 4.2s/min to 14.5 ± 4.33 s/min: group B). The magnitude of change in t-IVT with CRT negatively correlated with baseline t-IVT (r=-0.619, p0.001); thus t-IVT (significantly longer in group A than group B before CRT: 16.2 ± 4.8s/min vs. 11.7 ± 4.2s/min, p0.001) became significantly shorter in group A compared to group B after CRT (11.7 ± 3.7s/min vs. 14.5 ± 4.3s/min, p=0.005). After follow-up of 30 months, 70% group A patients had event-free survival compared to 39% group B patients. The presence of any fall in t-IVT after CRT was an independent predictor of event-free survival.T-IVT is a marker of global cardiac asynchrony that has predictive capacity on functional, symptomatic, and mortality endpoints in patients with advanced heart failure.
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- 2012
48. The era of modern medicine: implants and all
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Kaushik Guha and Rakesh Sharma
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medicine.medical_specialty ,Modern medicine ,Pathology ,Hepatology ,Cardiac pacing ,business.industry ,Technological change ,Gastroenterology ,Network data ,MEDLINE ,Alternative medicine ,medicine.disease ,Secondary care ,Clinical Quality ,Medicine ,Medical emergency ,business ,Pace - Abstract
Modern medicine is awash with technological advance. Though the last three decades have witnessed countless pharmacological successes, the pace of novel drug development has slowed down. Since the dawn of the new century, medicine has embraced technological changes with a resultant increase in implantable devices. Though the attendant physician may feel that medical devices are the remit of the specialist, with the expanding indications for medical implants, it is likely that physicians will encounter unfamiliar devices in routine and emergency clinical practice. Corbett et al highlight such issues within the sphere of endoscopy.1 Using an initial case of nucleus stimulators, the authors describe a successful endoscopic examination using a multidisciplinary approach. The authors indicate that the number of neurological and cardiac devices is rising. The Heart Rhythm network data indicates an increase in cardiac pacing (both basic and complex) and cardiac defibrillators.2 This data has also been corroborated on a European-wide basis.3 With increasing elderly populations observed throughout primary and secondary care, it is likely that the number of medical devices will increase further. The concern with medical devices and endoscopy …
- Published
- 2012
49. Right ventricular dysfunction is a predictor of non-response and clinical outcome following cardiac resynchronization therapy
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Francisco Alpendurada, Martin R. Cowie, Sanjay K Prasad, Theresa McDonagh, Raad H. Mohiaddin, Tevfik F Ismail, Winston Banya, Kaushik Guha, Dudley J. Pennell, Rakesh Sharma, and Amy Clifford
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Male ,lcsh:Diseases of the circulatory (Cardiovascular) system ,Time Factors ,Ventricular Dysfunction, Right ,medicine.medical_treatment ,Cardiomyopathy ,heart failure ,cardiac resynchronization therapy ,Kaplan-Meier Estimate ,Ventricular Function, Left ,Risk Factors ,London ,Odds Ratio ,Aged, 80 and over ,Medicine(all) ,Radiological and Ultrasound Technology ,medicine.diagnostic_test ,Middle Aged ,Right ventricular dysfunction ,Treatment Outcome ,Rv function ,cardiovascular system ,Cardiology ,Female ,Cardiology and Cardiovascular Medicine ,medicine.medical_specialty ,Cardiac resynchronization therapy ,Magnetic Resonance Imaging, Cine ,Risk Assessment ,cardiovascular magnetic resonance ,Predictive Value of Tests ,Internal medicine ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,cardiovascular diseases ,Aged ,Proportional Hazards Models ,Retrospective Studies ,Angiology ,business.industry ,Clinical events ,Research ,Patient Selection ,Magnetic resonance imaging ,medicine.disease ,right ventricular function ,Logistic Models ,lcsh:RC666-701 ,Heart failure ,Ventricular Function, Right ,business - Abstract
Background Cardiac resynchronization therapy (CRT) is an established treatment in advanced heart failure (HF). However, an important subset does not derive a significant benefit. Despite an established predictive role in HF, the significance of right ventricular (RV) dysfunction in predicting clinical benefit from CRT remains unclear. We investigated the role of RV function, assessed by cardiovascular magnetic resonance (CMR), in predicting response to and major adverse clinical events in HF patients undergoing CRT. Methods Sixty consecutive patients were evaluated with CMR prior to CRT implantation in a tertiary cardiac centre. The primary end-point was a composite of death from any cause or unplanned hospitalization for a major cardiovascular event. The secondary end-point was response to therapy, defined as improvement in left ventricular ejection fraction ≥ 5% on echocardiography at one year. Results Eighteen patients (30%) met the primary end-point over a median follow-up period of 26 months, and 27 out of 56 patients (48%) were considered responders to CRT. On time-to-event analysis, only atrial fibrillation (HR 2.6, 95% CI 1.02-6.84, p = 0.047) and RV dysfunction, either by a reduced right ventricular ejection fraction-RVEF (HR 0.96, 95% CI 0.94-0.99, p = 0.006) or tricuspid annular plane systolic excursion-TAPSE (HR 0.88, 95% CI, 0.80-0.96, p = 0.006), were significant predictors of adverse events. On logistic regression analysis, preserved RVEF (OR 1.05, 95% CI 1.01-1.09, p = 0.01) and myocardial scar burden (OR 0.90, 95% CI 0.83-0.96, p = 0.004) were the sole independent predictors of response to CRT. Patients with marked RV dysfunction (RVEF < 30%) had a particularly low response rate (18.2%) to CRT. Conclusions Right ventricular function is an important predictor of both response to CRT and long-term clinical outcome. Routine assessment of the right ventricle should be considered in the evaluation of patients for CRT.
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- 2011
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50. The epidemiology of heart failure
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Theresa A. McDonagh and Kaushik Guha
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medicine.medical_specialty ,business.industry ,Heart failure ,Epidemiology ,medicine ,medicine.disease ,Intensive care medicine ,business - Abstract
Over the last 30 years we have gone from famine to feast in terms ofthe epidemiological data now published for heart failure (HF). The field started with the seminal publication on the natural history ofHF from the Framingham study in 1971 showing a prevalence of HF of 0.8% in those aged between 50 and 59, rising to 9.1% inthose over 80 years with incidence rates of 0.2% at age 54 and 0.4% at age 85. This was followed by a large European study,‘The men born in 1913’, which gave similar figures of a prevalenceof 2.1% at age 50 and 13% at age 67 and incidence rates of 0.15% and 1% respectively at ages 50 and 67. These landmarkstudies relied on a clinical diagnosis of HF, basedon symptoms, signs, and scoring systems to identify cases. Moremodern epidemiological studies have used definitions of HF whichinclude objective measures of cardiac function in their definition,in keeping with current European and United States guidelines forthe diagnosis of HF. Initial studies focused on systolic dysfunctionbecause they reported at much the same time as the HF treatmenttrials which also enrolled patients with systolic HF. More recentlyattention has turned to describing the epidemiology of HF withpreserved systolic function, in addition.When describing the epidemiology of HF, it is worth bearing inmind that estimates of incidence and prevalence will vary according to the definition of HF used and the type of cohort being studied.This is especially important when assessing work which hasobjectively measured left ventricular systolic function. Variablessuch as left ventricular ejection fraction are normally distributed,so the cut point chosen is a critical determinant of the eventualresults.The present chapter aims to outline the contemporary epidemiologyof HF by describing its prevalence, incidence, aetiology andmortality as well as describing the trends which are occurring in thearea. It will discuss hospitalization rates, prognosis and economicburden in both Europe and the United States.
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- 2011
- Full Text
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