Incidence, Predictors, and Outcomes With Ventricular Arrhythmias in Continuous Flow Left Ventricular Assist Device...

Area of Science:

• Cardiology
• Medical Devices
• Arrhythmology

Background:

• Ventricular arrhythmias (VAs) are frequent in patients with left ventricular assist devices (LVADs).
• The prognostic significance of VAs in LVAD recipients is not well-established, with prior studies showing conflicting outcomes.
• This study investigates the incidence and clinical impact of VAs in a large LVAD cohort.

Purpose of the Study:

• To determine the association between pre-existing VAs and post-LVAD clinical outcomes.
• To evaluate the impact of VAs on survival, hospitalizations, and device therapies in LVAD patients.
• To identify predictors of mortality in LVAD recipients with a history of VAs.

Main Methods:

• Analysis of 408 patients undergoing LVAD implantation across five centers (2007-2015).
• VA defined as sustained VAs (>30s) or requiring ICD therapy.
• Assessment of pre- and post-LVAD VA effects on survival, hospitalizations, and ICD shocks.

Main Results:

• 62% of patients had a history of pre-LVAD VA.
• Pre-LVAD VA patients showed higher rates of post-implant VAs (73% vs. 37%), atrial arrhythmias, ICD shocks, and cardiac hospitalizations.
• No significant difference in overall mortality was observed between groups; LVEDD was the sole independent predictor of mortality.

Conclusions:

• Pre-LVAD VAs are linked to increased post-implant arrhythmic burden and morbidity but not long-term mortality.
• Left ventricular end-diastolic dimension (LVEDD) is a more critical determinant of survival than arrhythmia history.
• Individualized arrhythmia monitoring and management are crucial for LVAD patients with prior VAs.