Assessment of Left Ventricular (LV) synchronization according to Right ventricular (RV) pacing site and pacing mode

Setohi Abdelhafez, Amr Mostafa; Taha, Nasser; Ali, Mustafa Mohamed; M. Mahmoud, Hossam Eldin

doi:10.21608/mjmr.2024.324623.1806

	Assessment of Left Ventricular (LV) synchronization according to Right ventricular (RV) pacing site and pacing mode
Minia Journal of Medical Research
Articles in Press, Accepted Manuscript, Available Online from 13 October 2024
Document Type: Original Article
DOI: 10.21608/mjmr.2024.324623.1806
View on SCiNiTO
Authors
Amr Mostafa Setohi Abdelhafez¹; Nasser Taha²; Mustafa Mohamed Ali ³; Hossam Eldin M. Mahmoud⁴
¹cardiology department ,faculty of medicine ,minia university
²Department of cardiology Faculty of Medicine Minia University
³Msc
⁴Cardiology Division, Qena Faculty of medicine, South Valley university
Abstract
Abstract Background: Permanent pacing manages Bradyarrhythmias. RV pacing causes LV dyssynchrony and impair its function. RV septal pacing is thought to reduce LV dyssynchrony, enhancing contraction efficiency rather than RV apical pacing. Sequential RA-RV pacing with a two-chamber pacemaker offers more physiological depolarization than a single chamber pacemaker. Results: RVA and RVS groups (mean age 66.8±11.4 vs. 65±13.6 years) were compared, with similar gender distribution (P=0.266) and medical conditions (84.6% vs. 65.4%), The RVS group showed a significant shorter QRS timing (P=0.0001), with a difference of 161±19.6 ms in RVA group compared to 137 ± 19.1 ms in the RVS group. In the RVA group, the pacing mode was VVI (Single chamber, RV) in 15 (57.7%) patients, and DDD (Dual chambers, RA, RV) in 11 (42.3%) patients. In the RVS group, the VVI mode was used in eight (30.8%) patients, whereas the DDD mode was used in 18 (69.2%) patients. No statistically significant difference was found between groups regarding pacing mode (P = 0.051). Conclusions: RVS pacing reduced QRS time, provided better ventricular depolarization and function and had no considerable effect regarding pacing mode.
Keywords
Dyssynchrony; Pacemaker; RV function; RV pacing


Statistics Article View: 76