Table 3.
Angiographic characteristics and procedural complications, expressed as percentages or as median and interquartile ranges
| Variable | All patients | Group A | Group B | P | |
|---|---|---|---|---|---|
| (Patients who met ISCHEMIA exclusion criteria) | (Patients who did not meet ISCHEMIA exclusion criteria) | (A vs. B) | |||
| n = 3102 | n = 1900 | n = 1202 | |||
| Angiographic characteristics | |||||
| Multivessel disease | 636 (20.5) | 419 (22.1) | 217 (18.1) | 0.01 | |
| Significant stenosis; left main coronary artery | 157 (5.1) | 129 (6.8) | 28 (2.3) | <0.001 | |
| Significant stenosis – left anterior descending or diagonal | 1781 (57.4) | 1092 (57.5) | 689 (57.3) | 0.94 | |
| Significant stenosis – circumflex or obtuse marginal | 1620 (52.2) | 579 (48.2) | 1041 (54.8) | <0.001 | |
| Significant stenosis – right coronary artery | 1746 (56.3) | 1045 (55) | 701 (58.3) | 0.07 | |
| Number of vessels, percutaneous coronary intervention | 1 (1–1) | 1 (1–1) | 1 (1–1) | 0.005 | |
| Number of stents | 1 (1–2) | 1 (1–2) | 1 (1–2) | 0.005 | |
| Implanted stent | bare metal stent | 1785 (57.5) | 1087 (57.2) | 698 (58.1) | |
| drug-eluting stent | 1211 (39) | 743 (39.1) | 468 (38.9) | 0.57 | |
| bare metal stent and drug-eluting stent | 106 (3.5) | 70 (3.7) | 36 (3) | ||
| Complications | |||||
| Myocardial infarction | 40 (1.3) | 27 (1.4) | 13 (1.1) | 0.51 | |
| Stroke or transient ischemia attack | 10 (0.3) | 9 (0.5) | 1 (0.1) | 0.1 | |
| Bleeding | 52 (1.7) | 29 (1.5) | 23 (1.9) | 0.47 | |
| Blood transfusion | 30 (1.0) | 22 (1.2) | 8 (0.7) | 0.19 | |
| Dissection | 159 (5.1) | 108 (5.7) | 51 (4.2) | 0.08 | |
| Repeat of percutaneous transluminal coronary angioplasty | 9 (0.3) | 5 (0.3) | 4 (0.3) | 0.74 | |
| Urgent coronary artery bypass graft | 2 (0.1) | 1 (0.1) | 1 (0.1) | 1.0 | |
| Sudden cardiac arrest | 30 (1) | 16 (0.8) | 14 (1.2) | 0.45 | |
| Mortality | 366 (11.9) | 287 (15.1) | 79 (6.6) | <0.001 | |