Table 1. Distribution of demographic, clinical, and angiographic characteristics and co-morbid conditions stratified by duration of mechanical ventilation.
| Total | Mechanical ventilation Duration | P-value | ||
|---|---|---|---|---|
| ≤ 24 hours | > 24 hours | |||
| Total (N) | 312 | 51.3% (160) | 48.7% (152) | |
| Sex | ||||
| Male | 72.8% (227) | 78.1% (125) | 67.1% (102) | 0.029 |
| Female | 27.2% (85) | 21.9% (35) | 32.9% (50) | |
| Age (years) | 60.3 ± 11.5 | 60.1 ± 11.1 | 60.5 ± 11.9 | 0.748 |
| Type of myocardial infarction (MI) | ||||
| Anterior wall MI (AWMI) | 63.1% (197) | 69.4% (111) | 56.6% (86) | 0.123 |
| AWMI + Right Bundle Branch Block | 1.3% (4) | 0.6% (1) | 2% (3) | |
| Inferior wall MI (IWMI) | 7.7% (24) | 8.1% (13) | 7.2% (11) | |
| IWMI + Right Ventricular Infarct | 18.6% (58) | 13.1% (21) | 24.3% (37) | |
| Posterior wall MI (PWMI) | 1.9% (6) | 2.5% (4) | 1.3% (2) | |
| Inferior posterior wall MI | 2.9% (9) | 1.9% (3) | 3.9% (6) | |
| Lateral wall MI | 1.9% (6) | 2.5% (4) | 1.3% (2) | |
| NSTEMI | 2.6% (8) | 1.9% (3) | 3.3% (5) | |
| Reperfusion | ||||
| Percutaneous coronary intervention | 91% (284) | 91.9% (147) | 90.1% (137) | 0.269 |
| Plain old balloon angioplasty | 6.7% (21) | 5% (8) | 8.6% (13) | |
| Left heart catheterization | 2.2% (7) | 3.1% (5) | 1.3% (2) | |
| Time to reperfusion (hours) | 12 [7–24] | 10 [6–24] | 12 [8–36] | 0.080 |
| Thrombolysis in myocardial infarction (TIMI) flow | ||||
| 0 | 0.6% (2) | 0.6% (1) | 0.7% (1) | 0.154 |
| I | 2.2% (7) | 1.3% (2) | 3.3% (5) | |
| II | 12.8% (40) | 9.4% (15) | 16.4% (25) | |
| III | 84.3% (263) | 88.8% (142) | 79.6% (121) | |
| Cuprite vessel | ||||
| Left main | 5.1% (16) | 2.5% (4) | 7.9% (12) | 0.002 |
| Left anterior descending artery | 61.9% (193) | 70.6% (113) | 52.6% (80) | |
| Right coronary artery | 23.7% (74) | 16.3% (26) | 31.6% (48) | |
| Left circumflex artery | 7.4% (23) | 9.4% (15) | 5.3% (8) | |
| Obtuse marginal | 1% (3) | 0.6% (1) | 1.3% (2) | |
| Diagonal | 1% (3) | 0.6% (1) | 1.3% (2) | |
| Other diseased vessels | ||||
| Left main | 14.1% (44) | 13.1% (21) | 15.1% (23) | 0.611 |
| Left anterior descending artery | 88.8% (277) | 90% (144) | 87.5% (133) | 0.484 |
| Right coronary artery | 68.6% (214) | 63.1% (101) | 74.3% (113) | 0.033 |
| Left circumflex artery | 57.1% (178) | 55.6% (89) | 58.6% (89) | 0.602 |
| Obtuse marginal | 3.8% (12) | 5.6% (9) | 2% (3) | 0.094 |
| Diagonal | 2.2% (7) | 1.3% (2) | 3.3% (5) | 0.224 |
| Co-morbid conditions | ||||
| Hypertension | 82.4% (257) | 82.5% (132) | 82.2% (125) | 0.951 |
| Diabetes | 34.9% (109) | 27.5% (44) | 42.8% (65) | 0.005 |
| Smoker | 28.2% (88) | 26.9% (43) | 29.6% (45) | 0.592 |
| Chronic kidney disease | 7.1% (22) | 6.9% (11) | 7.2% (11) | 0.901 |
| Cerebrovascular accident | 4.5% (14) | 3.8% (6) | 5.3% (8) | 0.519 |
| COPD/Asthma | 3.8% (12) | 2.5% (4) | 5.3% (8) | 0.205 |
| Obese | 4.2% (13) | 1.3% (2) | 7.2% (11) | 0.008 |
| Chronic liver disease | 0.3% (1) | 0% (0) | 0.7% (1) | 0.304 |
| Congestive heart failure | 2.6% (8) | 1.3% (2) | 3.9% (6) | 0.132 |
| Ischemic heart diseases | 16% (50) | 14.4% (23) | 17.8% (27) | 0.415 |
NSTEMI: non ST elevation myocardial infarction, COPD: chronic obstructive pulmonary disease