Key result
Electrical cardiometry for VV delay optimization correlates with dp/dt and is linked to improved LVEF.
Why the study?
No studies had examined interventricular delay optimization using an electrical cardiometry method in relation to subsequent cardiac function in CRT-implanted patients.
Does optimization of interventricular delay using noninvasive electrical cardiometry improve cardiac function and clinical outcomes in patients with heart failure undergoing CRT implantation?
Population
19 consecutive CRT-implanted patients
Comparison
VV delay optimization by electrical cardiometry vs dp/dt method
Design
Observational study
Follow-up
6 months
Authors
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May support LVEF gains via noninvasive VV optimization in CRT; hypothesis-generating and requires randomized confirmation.
Observational (n=19)
No
Does optimization of interventricular delay using noninvasive electrical cardiometry improve cardiac function and clinical outcomes in patients with heart failure undergoing CRT implantation?
p-value: p=0.79
Noninvasive electrical cardiometry is a feasible alternative to invasive dp/dt for optimizing interventricular delay in CRT, and achieving an above-median increase in systolic volume predicts LVEF improvement at 6 months.
Kabutoya et al. (2022) conducted an observational in Medically refractory heart failure (n=19). Optimization of interventricular (VV) delay using electrical cardiometry vs. Simultaneous biventricular pacing / Below-median systolic volume increase was evaluated on Hospitalization due to heart failure (p=0.79). Electrical cardiometry for interventricular delay optimization correlated with the dp/dt method and improved left ventricular ejection fraction in patients with above-median systolic volume increases.