This study developed a prediction model for high-grade atrioventricular block (AVB) and complete left bundle branch block (CLBBB) following transcatheter aortic valve replacement (TAVR) in Chinese patients with aortic stenosis (AS). Analyzing 112 patients from Sun Yat-sen Memorial Hospital (2017-2024), the study incorporated clinical, electrocardiographic, and procedural variables to identify risk factors via logistic regression. A nomogram was constructed and validated internally (bootstrapping) and externally (temporal validation), with performance assessed using AUC, C-index, and calibration tests. The model aims to improve preoperative risk stratification and guide individualized management for TAVR-related conduction disturbances in this understudied population. Analyses were conducted in R 4.2.3 (significance: \*p\* \< 0.05).
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Permanent Pacemaker Implantation Rate for High-Grade AVB (≥Mobitz II/3°) Post-TAVR (12-Lead ECG Confirmed)
Timeframe: 7 years
Complete left bundle branch block rate post-TAVR (12-lead ECG confirmed)
Timeframe: 7 years