Study name Shrestha M et al.10 Monsefi et al.a11 Beckmann et al. *13 Hou et al.14 Shah et al.16
AI ≤ 1 22 (84.6) 86 (99)b 22 (84.6) 35 (94.6) 16 (100)
AI = 2 4 (15.4) 0 4 (15.4) 2 (5.4) 0
AI = 3-4 0 1 (1) 0 0
AV mean gradient (mmHg) n/a 5±3 n/a n/a n/a