Why the study?
Does ventricular pacing compared to synchronous pacing increase the prevalence of left atrial spontaneous echo contrast and thromboembolism?
Population
113 subjects total: 88 patients with permanent pacemakers and 25 healthy controls in sinus rhythm.
Comparison
Ventricular pacing vs Synchronous pacing and healthy controls
Design
Cross-sectional
Authors
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Ventricular pacing in AF may elevate spontaneous echo contrast risk; hypothesis-generating for thromboembolism versus synchronous pacing.
Does ventricular pacing compared to synchronous pacing increase the prevalence of left atrial spontaneous echo contrast and thromboembolism?
Ventricular pacing, especially in the presence of atrial fibrillation, is associated with reduced left atrial appendage ejection fraction and increased prevalence of spontaneous echo contrast compared to synchronous pacing.
Lee et al. (1997) studied this question.