Chocolate n = 48 | Conventional n = 63 | P | |
---|---|---|---|
Procedural characteristics | |||
Pre-balloon dilatation | |||
Balloon diameter, mm | 4.8 ± 0.8 | 4.6 ± 0.8 | 0.156 |
Balloon length, mm | 90 ± 37 | 148 ± 95 | 0.004 |
Inflation pressure, atm | 11 ± 3 | 16 ± 7 | < 0.001 |
Inflation time, sec | 154 ± 42 | 132 ± 77 | 0.225 |
Final device | |||
Drug-coated balloon, n (%) | 47 (98) | 53 (84) | 0.016 |
Bailout stent, n (%) | 1 (2.1) | 10 (15.9) | 0.016 |
Angiographical results | |||
Post pre-dilatation | |||
Dissection grade | |||
Grade none, n (%) | 29 (60) | 18 (29) | 0.006 |
Grade A, n (%) | 14 (29) | 19 (30) | |
Grade B, n (%) | 3 (6) | 10 (16) | |
Grade C, n (%) | 1 (2) | 8 (13) | |
Grade D, n (%) | 1 (2) | 7 (11) | |
Grade E or F, n (%) | 0 | 1(2) | |
Severe dissection, n (%) | 2 (4.2) | 16 (25.4) | 0.003 |
%Diameter stenosis, % | 18 ± 15 | 20 ± 17 | 0.409 |
Final angiogram | |||
Severe dissection, n (%) | 1 (2.1) | 7 (11.1) | 0.070 |
%diameter stenosis, % | 13 ± 11 | 13 ± 12 | 0.990 |