Procedural results
| CAG guided group (n=54) | IVUS guided group (n=54) | p Value | |
|---|---|---|---|
| *Residual stenosis of 35% or less by QCA in the absence of emergency CABG, closure of a major side branch, or flow limiting dissection. | |||
| CVA, cerebrovascular accident; MUSIC, multicenter ultrasound stenting in coronaries. | |||
| Procedure type (%) | NS | ||
| No intervention | 2 | 6 | |
| Plain old balloon angioplasty | 13 | 7 | |
| Stent | 85 | 87 | |
| Operator time, gloves on to gloves off (minutes) | 100 (37) | 113 (38) | NS |
| Success rate (%)* | 98 | 92 | NS |
| MUSIC criteria reached (%) | 16 | 64 | <0.01 |
| Final balloon size (mm) | 3.5 (0.5) | 3.9 (0.5) | <0.05 |
| Inflation pressure (atm) | 11 (2) | 13 (3) | <0.05 |
| Number of balloons used | 1.6 (0.9) | 1.9 (1.0) | NS |
| Number of stents used | 1.2 (0.8) | 1.4 (0.9) | NS |
| Acute gain by IVUS (mm) | 1.3 (0.8) | 1.6 (0.8) | <0.05 |
| Relative acute gain by IVUS (mm) | 0.3 (0.2) | 0.5 (0.2) | <0.05 |
| Death, Q wave MI, CVA, bleeding at puncture site requiring transfusion, or subacute stent thrombosis (%) | 0 | 0 | NS |
| Femoral aneurysm (%) | 2 | 2 | NS |
| Emergency CABG (%) | 0 | 2 | NS |
| Use of abciximab (%) | 6 | 4 | NS |