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Diagnostic Impact of Repeated Expert Review & Long‐Term Follow‐Up in Determining Etiology of Idiopathic Cardiac Arrest

Merghani, A; Monkhouse, C; Kirkby, C; Savvatis, K; Mohiddin, SA; Elliott, P; O’Mahony, C; ... Lambiase, PD; + view all (2021) Diagnostic Impact of Repeated Expert Review & Long‐Term Follow‐Up in Determining Etiology of Idiopathic Cardiac Arrest. Journal of the American Heart Association , 10 (e019610) 10.1161/jaha.120.019610. Green open access

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Abstract

Background: Recognizing the etiology of sudden cardiac arrest (SCA) has an enormous impact on the management of victims and their immediate families. A significant proportion of SCA survivors with a structurally normal heart are not offered a diagnosis and there is no clear consensus on the type and duration of follow‐up. We aimed to assess the utility of a multidisciplinary approach in optimizing diagnosis of cardiac arrest etiology during follow‐up. Methods and Results: We retrospectively assessed 327 consecutive SCA survivors (mean age 61.9±16.2 years, 80% men) who underwent secondary prevention implantable cardioverter defibrillators between May 2015 and November 2018. The initial diagnosis was recorded at the time of admission and follow‐up diagnosis was deduced from subsequent clinic records, investigations, and outcomes of multidisciplinary team meetings. Structural heart disease accounted for 282 (86%) of SCAs. Forty‐five (14%) patients had a structurally normal heart and underwent comprehensive testing and follow‐up (mean duration 93±52 weeks). On initial evaluation, 14/45 (31%) of these received a diagnosis, rising to 29/45 (64%) with serial reviews during follow‐up. Discussion in multidisciplinary team meetings and imaging reassessment accounted for 47% of new diagnoses. No additional diagnoses were made beyond 96 weeks. Nineteen (5.8%) fatalities occurred in the entire cohort, exclusively in patients with structural heart disease. Conclusions: Systematic comprehensive testing combined with multidisciplinary expert team review of SCA survivors without structural heart disease improves the yield and time to diagnosis compared with previously published studies. This approach has positive implications in the management of SCA survivors and their families.

Type: Article
Title: Diagnostic Impact of Repeated Expert Review & Long‐Term Follow‐Up in Determining Etiology of Idiopathic Cardiac Arrest
Open access status: An open access version is available from UCL Discovery
DOI: 10.1161/jaha.120.019610
Publisher version: http://dx.doi.org/10.1161/jaha.120.019610
Language: English
Additional information: © 2021 The Authors. Published on behalf of the American Heart Association, Inc., by Wiley. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.
Keywords: cardiomyopathy, channelopathy, defibrillators, idiopathic ventricular fibrillation, ischemic heart disease, sudden cardiac death
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > Institute of Cardiovascular Science
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Population Health Sciences > Institute of Cardiovascular Science > Clinical Science
URI: https://discovery.ucl.ac.uk/id/eprint/10129286
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