Small balloon strategy associated with low pacemaker implantation rate after self-expanding transcatheter valve implantation

Yuan Zhang, Wen-zhi Pan, Li-hua Guan, Xiao-chun Zhang, Sha-sha Chen, Li-fan Yang, Lei Zhang, Ming-fei Li, Dan-dan Chen, Da-xin Zhou, Jun-bo Ge

Table 1 Baseline characteristics

Parameters Small BAV (balloon size=18 mm, n=57) Normal BAV (balloon size >18 mm, n=37) P-value Age (years), mean±SD 78.5±7.3 77.2±6.1 0.38 Male, n (%) 37 (64.9) 26 (70.3) 0.66 BMI (kg/m2), mean±SD 23.1±3.2 22.2±3.7 0.26 STS score (%), mean±SD 9.6±5.8 9.8±6.2 0.94 Logistic EuroSCORE, mean±SD 4.2±2.6 5.8±7.7 0.22 NYHA functional class, n (%) III 25 (43.9) 17 (45.9) 0.54 IV 7 (12.3) 7 (18.9) 0.42 Aortic annulus diameter by MSCT (mm), mean±SD 24.8±2.6 25.9±2.9 0.12 ECG characteristics, n (%) LBBB 3 (5.2) 4 (11.1) 0.69 RBBB 6 (10.3) 4 (11.1) 0.62 Echocardiographic characteristics AV mean gradient (mmHg), mean±SD 53.3±19.8 52.8±15.6 0.90 Aortic valve area (cm2), mean±SD 0.66±0.13 0.68±0.18 0.67 LVEDD (mm), mean±SD 49.0±7.6 51.3±6.7 0.14 Bicuspid valve, n (%) 25 (43.9) 18 (48.6) 0.68 LVEF (%), mean±SD 57.5±10.3 54.6±12.4 0.22 AVR more than moderate, n (%) 22 (38.6) 14 (37.8) 0.35 MVR more than moderate, n (%) 62.4±7.8 57.7±10.7 0.06