Table 1.
Comparison of demographics and medical history among three groups of patients with different coronary artery dominancy
| Variable | Category | Right dominant (%) | Left dominant (%) | Codominant (%) | P |
|---|---|---|---|---|---|
| Sex | Male | 46 (85.2) | 27 (79.4) | 19 (86.4) | 0.720* |
| Female | 8 (14.8) | 7 (20.6) | 3 (13.6) | ||
| Age, mean±SD | 58.74±8.63 | 57.59±9.55 | 62.52±12.11 | 0.175† | |
| Chief complaint | Chest pain | 53 | 34 | 21 | 0.281* |
| Dyspnea | 1 | 0 | 0 | ||
| Others | 1 | 0 | 1 | ||
| Pain site | Retrosternal | 52 | 32 | 19 | 0.081* |
| Left hemithorax | 0 | 2 | 2 | ||
| Back | 0 | 0 | 2 | ||
| Pain radiation | Back | 4 | 3 | 0 | 0.050* |
| Left arm | 29 | 14 | 3 | ||
| Right arm | 1 | 0 | 1 | ||
| Abdomen | 3 | 1 | 3 | ||
| CPR before admission | Positive | 2 | 2 | 2 | 0.636* |
| History of CAD | Positive | 4 | 3 | 3 | 0.691* |
| History of MI | Positive | 2 | 1 | 1 | 0.951* |
| DM | Positive | 14 | 11 | 4 | 0.499* |
| Hypertension | Positive | 20 | 13 | 9 | 0.952* |
| Hyperlipidemia | Positive | 17 | 12 | 5 | 0.605* |
| Smoking | Positive | 28 | 12 | 10 | 0.312* |
| History of CA | Positive | 12 | 4 | 5 | 0.425* |
| History of PCI | Positive | 5 | 0 | 3 | 0.116* |
| History of CABG | Positive | 4 | 0 | 2 | 0.232* |
| SBP (mmHg), mean±SD | 129.28±3.39 | 123.60±4.08 | 126.95±4.51 | 0.560† | |
| DBP (mmHg), mean±SD | 81.44±2.18 | 79.79±3.05 | 81.45±3.32 | 0.889† | |
| PR (/min), mean±SD | 76.12±2.00 | 80.12±2.96 | 77.52±4.32 | 0.552† |
*The results of Chi-square test; †The results of one-way ANOVA; CPR=Cardiopulmonary resuscitation; CAD=Coronary artery disease; MI=Myocardial infarction; DM=Diabetes mellitus; CA=coronary angiography; PCI=Percutaneous intervention; CABG=Coronary artery bypass graft; SD=Standard deviation; SBP=Systolic blood pressure; DBP=Diastolic blood pressure; PR=Pulse rate