Baseline characteristics and ECG findings
| LMCA group (n = 25) | LAD group (n = 30) | LCx group (n = 30) | RCA group (n = 30) | p Value | |
|---|---|---|---|---|---|
| LAD, left anterior descending artery; LCx, left circumflex artery; LMCA, left main coronary artery; NS, not significant; RCA, right coronary artery. | |||||
| Age (years) | 62 (9) | 62 (14) | 64 (12) | 63 (13) | NS |
| Male sex | 24 (96%) | 27 (90%) | 22 (73%) | 26 (87%) | NS |
| Diabetes | 4 (16%) | 6 (20%) | 7 (23%) | 9 (30%) | NS |
| Hypertension | 3 (12%) | 11 (37%) | 9 (30%) | 9 (30%) | NS |
| Smoking | 10 (40%) | 22 (73%) | 15 (50%) | 21 (70%) | NS |
| Time to ECG (hours) | 3.8 (5.3) | 4.8 (5.0) | 7.3 (6.2) | 3.9 (4.2) | NS |
| ST depression ⩾0.1 mV in II, III or aVF | 22 (88%) | 21 (71%) | 8 (27%) | 1 (3%) | p<0.01 |
| ST depression ⩾0.2 mV in II, III or aVF | 19 (76%) | 6 (20%) | 2 (7%) | 0 (0%) | p<0.01 |
| ST elevation ⩾0.1 mV in aVR | 17 (68%) | 4 (13%) | 8 (27%) | 1 (3%) | p<0.01 |
| ST elevation ⩾0.1 mV in both aVR and aVL | 10 (40%) | 1 (3%) | 1 (3%) | 0 (0%) | p<0.01 |
| ST elevation in aVR with less that in V1 | 10 (40%) | 2 (7%) | 6 (20%) | 0 (0%) | p<0.01 |
| Left anterior fascicular block | 20 (80%) | 5 (17%) | 2 (7%) | 2 (7%) | p<0.01 |
| Right bundle branch block | 13 (52%) | 6 (20%) | 1 (3%) | 2 (7%) | p<0.01 |