Pre-implant global longitudinal strain as an early sign of pacing-induced cardiomyopathy in patients with complete atrioventricular block.

14 In a randomized trial comparing patients with biventricular and RV‐only pacing, the benefit of biventricular pacing seemed to be greater in patients with a native QRS duration > 110 ms, although the interaction did not reach statistical significance. 18 In our previously published study, we demonstrated that pacing QRS duration is a major determinant of PICM. 19 Although native QRS duration was identified as a significant predictor of PICM (hazard ratio = 1.031; P = .030) in the current study, pacing QRS duration exhibited significant predictive ability in the univariate analysis only, showing a positive trend in the multivariate analysis.

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19 Although native QRS duration was identified as a significant predictor of PICM (hazard ratio = 1.031; P = .030) in the current study, pacing QRS duration exhibited significant predictive ability in the univariate analysis only, showing a positive trend in the multivariate analysis.

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