Prevalence of risk factors of patients undergoing elective and non-elective stent placement
| Patient risk factor | Elective (n = 1951) | Non-elective (n = 933) |
|---|---|---|
| *p<0.05; **p<0.001. | ||
| AMI, acute myocardial infarction; CABG, coronary artery bypass grafting; CHD, coronary heart disease; NYHA, New York Heart Association. | ||
| Age at intervention (years) | 60.3 (53.6–67.4) | 61.2 (53.4–69.4) |
| Women | 27.9% | 22.5%** |
| NYHA dyspnoea class >II | 9.5% | 29.2%** |
| AMI | 3.9% | 39.4%** |
| Unstable angina | 6.7% | 55.2%** |
| Cardiogenic shock | 0.0% | 2.1%** |
| Family history of CHD | 51.1% | 47.1%* |
| Hypercholesterolaemia | 85.3% | 84.6% |
| Hypertension | 49.5% | 42.4%** |
| Smoking history | 68.1% | 70.2% |
| Diabetes | 13.2% | 12.9% |
| Peripheral vascular disease | 4.4% | 4.1% |
| Cerebrovascular disease | 4.4% | 5.6% |
| Renal dysfunction | 1.0% | 0.9% |
| Respiratory disease | 5.6% | 6.3% |
| Ejection fraction <50% | 16.6% | 32.1%** |
| Triple vessel disease | 12.0% | 16.0%** |
| Left main stem >50% | 1.3% | 1.8% |
| Prior CABG | 7.4% | 5.6% |