Table 1.
Baseline Characteristics and In‐hospital Outcomes of STEMI Patients Presenting >12 Hours and ≤12 Hours After Symptom Onset
| >12 h N=929 | ≤12 h N=2268 | ||
|---|---|---|---|
| Age, y | 57 (50–67) | 51 (45–60) | <0.0001 |
| Female gender | 19 | 11 | <0.0001 |
| Country | <0.0001 | ||
| Bahrain (n=88) | 9 | 91 | |
| Kuwait (n=754) | 15 | 85 | |
| Oman (n=479) | 22 | 78 | |
| Qatar (n=155) | 15 | 85 | |
| UAE (n=750) | 14 | 86 | |
| Yemen (n=971) | 59 | 41 | |
| HT | 32 | 33 | 0.56 |
| DM | 30 | 32 | 0.26 |
| Prior MI | 14 | 13 | 0.34 |
| Prior PCI | 3 | 6 | 0.0018 |
| Prior CABG | 2 | 1 | 0.08 |
| Smoking | 45 | 53 | 0.0002 |
| HL | 14 | 18 | 0.001 |
| Family history of CAD | 11 | 14 | 0.0066 |
| MI location | <0.0001 | ||
| Anterior | 58 | 53 | |
| Inferior | 32 | 41 | |
| Prior stroke | 5 | 2 | <0.0001 |
| Chest pain | 87 | 95 | <0.0001 |
| Resting HR (bpm) | 88 (77–100) | 80 (70–95) | <0.001 |
| SBP (mm Hg) | 130 (110–150) | 135 (120–154) | <0.001 |
| Peak CPK (mg/dL) | 455 (210–1208) | 1319 (446–2753) | <0.001 |
| Peak CKMB (mg/dL) | 71 (40–130) | 111 (50–234) | <0.001 |
| Ambulance use | 12 | 19 | <0.0001 |
| Door‐to‐ECG time (min) | 15 (8–21) | 10 (5–18) | <0.0001 |
| Killip class | <0.0001 | ||
| I (n=2555) | 71 | 83 | |
| II (n=388) | 18 | 10 | |
| III (n=153) | 7 | 4 | |
| IV (n=94) | 4 | 3 | |
| GRACE score | <0.0001 | ||
| Low (n=1131) | 28 | 47 | |
| Intermediate (n=812) | 30 | 30 | |
| High (n=734) | 42 | 23 | |
| Medication use | |||
| Aspirin | 98 | 98 | 0.30 |
| Clopidogrel | 59 | 59 | 0.96 |
| Unfractionated heparin | 74 | 63 | <0.0001 |
| LMW heparin | 22 | 31 | <0.0001 |
| IIb/IIIa inhibitors | 6 | 9 | 0.0013 |
| β‐Blockers | 55 | 65 | <0.0001 |
| ACEIs | 71 | 65 | 0.0006 |
| Statins | 88 | 91 | 0.0233 |
| Nitrates | 79 | 72 | <0.0001 |
| Diuretics | 22 | 16 | <0.0001 |
| Coronary angiography | 12 | 20 | <0.0001 |
| EF (n=2207) | 48 (40–55) | 46 (39–55) | 0.08 |
| Outcomes | |||
| Death | 10.4 | 3.9 | <0.0001 |
| Cardiogenic shock | 13 | 6 | <0.0001 |
| New‐onset heart failure | 11 | 6 | <0.0001 |
| Major bleeding | 1 | 1 | 0.72 |
| Stroke | 1 | 2 | 0.035 |
Abbreviations: ACEI, angiotensin‐converting enzyme inhibitor; CABG, coronary artery bypass graft; CAD, coronary artery disease; CK, creatine kinase; CK‐MB, creatine kinase isoenzyme MB; DM, diabetes mellitus; ECG, electrocardiography; EF, ejection fraction; GRACE, Global Registry of Acute Coronary Events; HL, hyperlipidemia; HR, heart rate; HT, hypertension; LMW, low molecular weight; MI, myocardial infarction; n, number of patients; PCI, percutaneous coronary intervention; SBP, systolic blood pressure; UAE, United Arab Emirates.
Continuous variables are summarized as median and interquartile ranges, and categorical variables are summarized as percentages