Key result
Elevated pacing capture threshold and low pacing impedance during leadless pacemaker implantation were independent predictors of poor pacing capture threshold exacerbation the next day.
Why the study?
The predictors of pacing capture threshold exacerbation after leadless pacemaker implantation remain unknown.
Observational (n=211)
No
Elevated pacing capture threshold (≥1.13 V/0.24 ms) and low pacing impedance (<650 Ω) during leadless pacemaker implantation predict early threshold exacerbation, highlighting the need for careful intraprocedural electrical assessment to optimize battery longevity.
Answers are grounded in this paper and cite their sources.
May prompt closer post-implant surveillance; hypothesis-generating for risk stratification in leadless pacemakers.
The predictors of pacing capture threshold (PCT) exacerbation after leadless pacemaker implantation remain unknown. We analyzed the predictors of poor PCT by identifying risk factors using multivariate logistic regression analysis for 211 patients with leadless pacemaker implantation. Twenty patients met the criteria for elevated PCT levels and were categorized in the poor PCT group. Multivariate analyses revealed that PCT (P < 0.0001) and pacing impedance (P = 0.03) were independent predictors of PCT exacerbation. Elevated PCT levels and low pacing impedance during leadless pacemaker implantation were potential risk factors for the replacement of leadless pacemakers after the procedure.
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Morita et al. (2023) conducted an observational in Leadless pacemaker implantation (n=211). Elevated pacing capture threshold (≥ 1.13 V) during implantation vs. Normal pacing capture threshold (< 1.13 V) during implantation was evaluated on Poor pacing capture threshold (PCT > 2.0 V/0.24 ms or increase of > 0.5 V/0.24 ms) on the day after implantation (OR 9.93, 95% CI 3.45-28.5, p=<0.0001). Elevated pacing capture threshold and low pacing impedance during leadless pacemaker implantation were independent predictors of poor pacing capture threshold exacerbation the next day.
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