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- W4223894420 abstract "Abstract Introduction Left bundle branch area pacing (LBBAP) is a novel physiological pacing modality. The relationship between the pacing lead tip location and paced electrocardiographic (ECG) characteristics remains unclear. The objectives are to determine the lead tip location within the interventricular septum (IVS) and assess the location‐based ECG QRS duration (QRSd) and left ventricular activation time (LVAT). Methods This multicenter study enrolled 50 consecutive bradycardia patients who met pacemaker therapy guidelines and received LBBAP implantation via the trans‐ventricular septal approach. After at least 3 months postimplant, 12‐lead ECGs and pacing parameters were obtained. Cardiac computed tomography (CT) imaging was performed to assess the LBBAP lead tip distance from the LV blood pool. Results Among the 50 patients, analyzable CT images were obtained in 42. In 23 of the 42 patients, the lead tips were within 2 mm to the LV blood pool (the LV subendocardial (LVSE) group), 13 between 2 and 4 mm (the Near‐LVSE group), and the remaining 6 beyond 4 mm (the Mid‐LV septal (Mid‐LVS) group). No significant differences in paced QRSd were found among the three groups (LVSE, 107 ± 15 ms; Near‐LVSE, 106 ± 13 ms; Mid‐LVS, 104 ± 15 ms; p = .87). LVAT in the LVSE (64 ± 7 ms) was significantly shorter than in the Mid‐LVS (72 ± 8 ms; p < .05), but not significantly different from that in the Near‐LVSE (69 ± 8 ms; p > .05). Conclusion In routine LBBAP practice, paced narrow QRSd and fast LVAT, indicative of physiological pacing, were consistently achieved for lead tip location in the LV subendocardial or near LV subendocardial region." @default.
- W4223894420 created "2022-04-19" @default.
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- W4223894420 date "2022-04-30" @default.
- W4223894420 modified "2023-10-16" @default.
- W4223894420 title "Computed tomography imaging‐identified location and electrocardiographic characteristics of left bundle branch area pacing in bradycardia patients" @default.
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- W4223894420 doi "https://doi.org/10.1111/jce.15493" @default.
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