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Published on: June 12, 2021
Impact of ICD Presence in Patients With Left Ventricular Assist Devices for End-Stage Heart Failure
Nafilah Baridwan1, Mustafa Gerçek2, Muhammed Gerçek3
1Department of Electrophysiology, Heart and Diabetes Center NRW, Ruhr University Bochum, Bad Oeynhausen, Germany.
Insights
Implantable cardioverter defibrillator (ICD) therapy may reduce mortality in patients with left ventricular assist devices (LVADs). However, careful consideration of complications and individual patient factors is crucial for management decisions.
Area of Science:
- Cardiology
- Medical Devices
- Heart Failure Management
Background:
- The prognostic value of implantable cardioverter defibrillators (ICDs) in patients with end-stage heart failure (HF) supported by left ventricular assist devices (LVADs) is debated.
- Evaluating the impact of ICDs and their complications in LVAD patients is essential for optimizing care.
Purpose of the Study:
- To assess the prognostic significance of continued ICD use in patients with LVAD implantation.
- To identify and analyze complications associated with ICDs in this patient population.
Main Methods:
- Retrospective analysis of 351 patients undergoing LVAD implantation between 2009 and 2021.
- Propensity score matching created comparable cohorts of 79 patients each, with and without ICDs.
- Primary endpoint: composite of all-cause mortality and heart transplantation; secondary endpoints included complications.
Main Results:
- The ICD cohort showed a significantly lower rate of the primary endpoint (44.3% vs. 59.5%, p=0.035), primarily driven by reduced all-cause mortality (22.08% vs. 41.8%, p=0.008).
- Heart transplantation rates were similar between groups (17.7% vs. 21.5%, p=0.98).
- ICD-related complications occurred in 20.4% of patients, including lead revisions, system removals due to infection, inappropriate shocks, and hematomas.
Conclusions:
- ICD therapy was associated with decreased mortality in this LVAD cohort, contrasting with some meta-analyses.
- The significant occurrence of ICD complications necessitates individualized management strategies.
- Treatment decisions should balance arrhythmic risk, pacing needs, procedural risks, and patient preferences.
Background:
The prognostic relevance of implantable cardioverter defibrillator (ICD) in patients with end-stage heart failure (HF) with left ventricular assist device (LVAD) remains controversial.
Objectives:
To evaluate the prognostic impact of ongoing use of ICD and associated complications in HF-patients with LVAD-implantation.
Methods:
We retrospectively analyzed all consecutive patients (n = 351) who underwent LVAD-implantation and follow up between 2009 and 2021. Patients were categorized according to the presence (n = 254) or absence (n = 97) of ICD. To reduce baseline imbalances between groups, propensity score matching (PSM) was performed, yielding two matched cohorts of 79 patients each. The primary endpoint was a composite of all-cause mortality and heart transplantation. Secondary endpoints included all-cause mortality, heart transplantation, and ICD-related complications.
Results:
Median age was 58 [49-65] years, and 85% were male. Median follow-up duration was 3.6 [2.6-5.7] years. The primary endpoint revealed significantly less events in the ICD cohort (44.3% vs. 59.5% (HR 0.6 95%CI [0.40; 0.97], p = 0.035)). The difference was driven by a higher rate of all-cause mortality (22.08% vs. 41.8%, p = 0.008), while the heart transplantation rate was similar (17.7% vs. 21.5%, p = 0.98). ICD-related complications occurred in 20.4% of all ICD-patients, including 27 lead revisions, 8 complete system removals due to infection, 13 inadequate shocks and 4 hematoma evacuations.
Conclusion:
ICD therapy was associated with lower mortality in this single-center LVAD-cohort. However, this finding contrasts with recent meta-analytic. Given the substantial burden of ICD-related complications, ICD-management after LVAD-implantation should be individualized according to arrhythmic risk, pacing requirements, procedural risk, and patient preferences.
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