Cardiac resynchronization therapy with or without defibrillator in patients with heart failure

TY - JOUR

T1 - Cardiac resynchronization therapy with or without defibrillator in patients with heart failure

AU - Schrage, Benedikt

AU - Lund, Lars H

AU - Melin, Michael

AU - Benson, Lina

AU - Uijl, Alicia

AU - Dahlström, Ulf

AU - Braunschweig, Frieder

AU - Linde, Cecilia

AU - Savarese, Gianluigi

N1 - © The Author(s) 2021. Published by Oxford University Press on behalf of the European Society of Cardiology.

PY - 2022/1/4

Y1 - 2022/1/4

N2 - AIMS: Randomized data on the efficacy/safety of cardiac resynchronization therapy with vs. without defibrillator (CRT-D,-P) in heart failure with reduced ejection fraction (HFrEF) are scarce. We aimed to evaluate survival associated with use of CRT-D vs. CRT-P in a contemporary cohort with HFrEF.METHODS AND RESULTS: Patients from Swedish HF Registry treated with CRT-D/CRT-P and fulfilling criteria for primary prevention defibrillator use were included. Logistic regression was used to evaluate predictors of CRT-D non-use. All-cause mortality was compared in CRT-D vs. CRT-P by Cox regression in a 1 : 1 propensity-score-matched cohort. Of 1988 patients with CRT, 1108 (56%) had CRT-D and 880 (44%) CRT-P. Older age, higher ejection fraction (EF), female sex, and the lack of referral to HF nurse-led outpatient clinic were major determinants of CRT-D non-use. After matching, 645 CRT-D patients were compared with 645 with CRT-P. The CRT-D use was associated with lower 1- and 3-year all-cause mortality [hazard ratio (HR):0.76, 95% confidence interval (CI):0.58-0.98; HR: 0.82, 95% CI: 0.68-0.99, respectively]. Results were consistent in all pre-specified subgroups except for CRT-D use being associated with lower 3-year mortality in patients with an EF < 30% but not in those with an EF ≥ 30% (HR: 0.73, 95% CI: 0.59-0.89 and HR: 1.24, 95% CI: 0.83-1.85, respectively; P-interaction = 0.02).CONCLUSION: In a contemporary HFrEF cohort, CRT-D was associated with lower mortality compared with CRT-P. The CRT-D use was less likely in older patients, females, and in patients not referred to HF nurse-led outpatient clinic. Our findings support the use of CRT-D vs. CRT-P in HFrEF, in particular with severely reduced EF.

AB - AIMS: Randomized data on the efficacy/safety of cardiac resynchronization therapy with vs. without defibrillator (CRT-D,-P) in heart failure with reduced ejection fraction (HFrEF) are scarce. We aimed to evaluate survival associated with use of CRT-D vs. CRT-P in a contemporary cohort with HFrEF.METHODS AND RESULTS: Patients from Swedish HF Registry treated with CRT-D/CRT-P and fulfilling criteria for primary prevention defibrillator use were included. Logistic regression was used to evaluate predictors of CRT-D non-use. All-cause mortality was compared in CRT-D vs. CRT-P by Cox regression in a 1 : 1 propensity-score-matched cohort. Of 1988 patients with CRT, 1108 (56%) had CRT-D and 880 (44%) CRT-P. Older age, higher ejection fraction (EF), female sex, and the lack of referral to HF nurse-led outpatient clinic were major determinants of CRT-D non-use. After matching, 645 CRT-D patients were compared with 645 with CRT-P. The CRT-D use was associated with lower 1- and 3-year all-cause mortality [hazard ratio (HR):0.76, 95% confidence interval (CI):0.58-0.98; HR: 0.82, 95% CI: 0.68-0.99, respectively]. Results were consistent in all pre-specified subgroups except for CRT-D use being associated with lower 3-year mortality in patients with an EF < 30% but not in those with an EF ≥ 30% (HR: 0.73, 95% CI: 0.59-0.89 and HR: 1.24, 95% CI: 0.83-1.85, respectively; P-interaction = 0.02).CONCLUSION: In a contemporary HFrEF cohort, CRT-D was associated with lower mortality compared with CRT-P. The CRT-D use was less likely in older patients, females, and in patients not referred to HF nurse-led outpatient clinic. Our findings support the use of CRT-D vs. CRT-P in HFrEF, in particular with severely reduced EF.

KW - Aged

KW - Cardiac Resynchronization Therapy/methods

KW - Defibrillators, Implantable/statistics & numerical data

KW - Female

KW - Heart Failure/therapy

KW - Humans

KW - Male

KW - Risk Factors

KW - Stroke Volume

KW - Treatment Outcome

KW - Ventricular Dysfunction, Left/therapy

U2 - 10.1093/europace/euab233

DO - 10.1093/europace/euab233

M3 - SCORING: Journal article

C2 - 34486653

VL - 24

SP - 48

EP - 57

JO - EUROPACE

JF - EUROPACE

SN - 1099-5129

IS - 1

ER -