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@article{Flett:2023:10.1016/j.ahj.2023.09.008,
author = {Flett, A and Cebula, A and Nicholas, Z and Adam, R and Ewings, S and Prasad, S and Cleland, JG and Eminton, Z and Curzen, N},
doi = {10.1016/j.ahj.2023.09.008},
journal = {Am Heart J},
pages = {149--158},
title = {Rationale and study protocol for the BRITISH randomized trial (Using cardiovascular magnetic resonance identified scar as the benchmark risk indication tool for implantable cardioverter defibrillators in patients with nonischemic cardiomyopathy and severe systolic heart failure).},
url = {http://dx.doi.org/10.1016/j.ahj.2023.09.008},
volume = {266},
year = {2023}
}

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TY  - JOUR
AB  - BACKGROUND: For patients with nonischemic cardiomyopathy (NICM), current guidelines recommend implantable cardioverter defibrillators (ICD) when left ventricular ejection fraction (LVEF) is ≤35%, but the DANISH trial failed to confirm that ICDs reduced all-cause mortality for such patients. Circumstantial evidence suggests that scar on CMR is predictive of sudden and arrhythmic death in this population. The presence of myocardial scar identified by cardiac magnetic resonance imaging (CMR) in patients with NICM and an LVEF ≤35% might identify patients at higher risk of sudden arrhythmic death, for whom an ICD is more likely to reduce all-cause mortality. METHODS/DESIGN: The BRITISH trial is a prospective, multicenter, randomized controlled trial aiming to enrol 1,252 patients with NICM and an LVEF ≤35%. Patients with a nonischemic scar on CMR will be randomized to either: (1) ICD, with or without cardiac resynchronization (CRT-D), or (2) implantable loop recorder (ILR) or cardiac resynchronization (CRT-P). Patients who are screened for the trial but are found not to be eligible, predominantly due to an absence of scar or those who decline to be randomized will be enrolled in an observational registry. The primary endpoint is all-cause mortality, which we plan to assess at 3 years after the last participant is randomized. Secondary endpoints include clinical outcomes, appropriate and inappropriate device therapies, symptom severity and well-being, device-related complications, and analysis of the primary endpoint by subgroups with other risk markers. CONCLUSION: The BRITISH trial will assess whether the use of CMR-defined scar to direct ICD implantation in patients with NICM and an LVEF ≤35% is associated with a reduction in mortality.
AU  - Flett,A
AU  - Cebula,A
AU  - Nicholas,Z
AU  - Adam,R
AU  - Ewings,S
AU  - Prasad,S
AU  - Cleland,JG
AU  - Eminton,Z
AU  - Curzen,N
DO  - 10.1016/j.ahj.2023.09.008
EP  - 158
PY  - 2023///
SP  - 149
TI  - Rationale and study protocol for the BRITISH randomized trial (Using cardiovascular magnetic resonance identified scar as the benchmark risk indication tool for implantable cardioverter defibrillators in patients with nonischemic cardiomyopathy and severe systolic heart failure).
T2  - Am Heart J
UR  - http://dx.doi.org/10.1016/j.ahj.2023.09.008
UR  - https://www.ncbi.nlm.nih.gov/pubmed/37777041
VL  - 266
ER  -

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