Why the study?
Micra AV provides atrioventricular synchrony, and first-degree AV block can cause a reduction of myocardial contractility.
Does single-lead atrial sensing ventricular pacing (VDD) improve left ventricle global longitudinal strain compared to spontaneous rhythm in patients with first-degree atrioventricular block?
Comparison
VDD pacing vs spontaneous rhythm
Follow-up
24–48 h
Authors
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VDD pacing was associated with better LV GLS in this case report; hypothesis-generating and should not yet change practice in first-degree AV block.
Does single-lead atrial sensing ventricular pacing (VDD) improve left ventricle global longitudinal strain compared to spontaneous rhythm in patients with first-degree atrioventricular block?
In a small cohort of patients with first-degree AV block, leadless VDD pacing significantly improved left ventricular global longitudinal strain compared to spontaneous rhythm.
Guaricci et al. (2024) studied this question.
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