Parameters of TPT, TPR and RSI adjusted by the R–R interval, echocardiography, MAPSE, TAPSE, left ventricular pressure and heart rate at SR and pacing.

Values shown are Mean ± SD. *P < 0.05 vs. SR values. ^†P < 0.05 vs. pacing at RA values. ^‡P < 0.05 vs. pacing at HB values. SR: sinus rhythm; RA: right atrium; RVA: right ventricular apex; RVOT: right ventricular outflow tract; HB: His bundle; LVA: left ventricular apex; LVS: left ventricular septum; RARV: right atrium and right ventricular apex; HR: heart rate; LVEF: left ventricular ejection fraction; LVEDV: left ventricular end diastolic volume; LVESV: left ventricular end systolic volume; MAPSE: mitral annular plane systolic excursion; TAPSE: tricuspid annular plane systolic excursion; LVESP: left ventricular end systolic pressure; LVEDP: left ventricular end diastolic pressure; TPR: time to peak rotation; TPT: time to peak twist; RSI: rotational synchronization index; aTPR: apical TPR; bTPR: basal TPR. R–R: R–R interval.

Parameters of TPT, TPR and RSI adjusted by the R–R interval, echocardiography, MAPSE, TAPSE, left ventricular pressure and heart rate at SR and pacing.