Electrocardiographic assessment
EPS
In all patients, resting 12-lead ECG (recording speed 50 mm/s; standardized calibration for 10 mm/mV) was recorded the day before, immediately after, after 3–5 days (before discharge) and at least 30 days post TAVR. All tracings were analyzed by two experienced cardiologists blinded to the time point of the recording and results of the EPS. Left BBB was defined as a QRS duration ≥ 120 ms with broad notched or slurred R wave in leads 