TABLE 3.
Tertiary involvement and outcomes of patients with acute myocardial infarction.
| Characteristics | STEMI (n = 49) |
NSTEMI (n = 47) |
All patients (n = 96) |
Odds of STEMI compared to NSTEMI |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| n | % | Mean ± s.d. | n | % | Mean ± s.d. | n | % | Mean ± s.d. | OR | 95% CI | p | |
| Tertiary care | ||||||||||||
| Transferred during admission | 12 | 24.5 | - | 2 | 4.3 | - | 14 | 14.6 | - | 7.3 | 1.5–34.7 | 0.012 |
| Patients booked for cardiology | 35 | 71.4 | - | 33 | 70.2 | - | 68 | 70.8 | - | 1.1 | 0.4–2.6 | 0.896 |
| Angiography done | 16 | 32.7 | - | 6 | 12.8 | - | 22 | 22.9 | - | 3.3 | 1.2–9.4 | 0.025 |
| MIBI | 22 | 44.9 | - | 12 | 25.5 | - | 34 | 35.4 | - | 2.4 | 1.0–5.6 | 0.05 |
| CABG done | 5 | 10.2 | - | 1 | 2.1 | - | 6 | 6.25 | - | - | - | - |
| Immediate complications | ||||||||||||
| Arrhythmia | 6 | 12.24 | - | 5 | 10.6 | - | 11 | 11.4 | - | 1.2 | 0.3–4.1 | 0.805 |
| Cardiogenic shock | 5 | 10.20 | - | 1 | 2.1 | - | 6 | 6.2 | - | 5.2 | 0.6–46.5 | 0.138 |
| Post infarct angina | 1 | 2.0 | - | 2 | 4.2 | - | 3 | 3.1 | - | 0.5 | 0.0–5.3 | 0.541 |
| Pulmonary oedema | 0 | 0.0 | - | 2 | 4.2 | - | 2 | 2.1 | - | 0.2 | 0.0–3.9 | 0.279 |
| Recurrent MI | 4 | 8.2 | - | 3 | 6.4 | - | 7 | 7.3 | - | 1.3 | 0.3–6.2 | 0.738 |
| CCF | 4 | 8.2 | - | 6 | 12.8 | - | 10 | 10.4 | - | 0.6 | 0.2–2.3 | 0.464 |
| CVA | 0 | 0.0 | - | 1 | 2.1 | - | 1 | 1.0 | - | 0.3 | 0.0–7.9 | 0.481 |
| LV thrombus | 2 | 4.1 | - | 0 | 0.0 | - | 2 | 2.1 | - | 5.0 | 0.2–107 | 0.303 |
| Total | 22 | 44.5 | - | 20 | 42.5 | - | 4 | 43.8 | - | 1.1 | 0.5–2.5 | 0.817 |
| Immediate in-hospital outcome (including at transfer hospital) | ||||||||||||
| Alive | 40 | 81.6 | - | 44 | 93.6 | - | 84 | 87.5 | - | 0.3 | 0.1–1.2 | 0.089 |
| Demised | 9 | 18.4 | - | 3 | 6.4 | - | 12 | 12.5 | - | 3.3 | 0.8–13.1 | 0.089 |
| 30-day outcome in patients with follow up investigations† | ||||||||||||
| Echo EF | 29 | - | 48.6 ± 7.1 | 26 | - | 50.9 ± 11.4 | 55 | - | 49.7 ± 9.4 | - | - | 0.360 |
| EF < 45% | 8 | 27.6 | - | 6 | 23.1 | - | 14 | 25.5 | - | 1.2 | 0.4–3.9 | 0.768 |
| EF ≥ 45% | 21 | 72.4 | - | 20 | 76.9 | - | 41 | 74.5 | - | 0.9 | 0.4–2.1 | 0.883 |
| 30-day outcome in patients with follow up – NYHA class ‡ | ||||||||||||
| Class I | 17 | 44.7 | - | 14 | 33.3 | - | 31 | 38.8 | - | 1.3 | 0.6–3.1 | 0.488 |
| Class II | 14 | 36.8 | - | 17 | 40.5 | - | 31 | 38.8 | - | 0.9 | 0.4–2.1 | 0.825 |
| Class III | 4 | 10.5 | - | 3 | 7.1 | - | 7 | 8.8 | - | 1.5 | 0.3–7.0 | 0.626 |
| Class IV | 1 | 2.6 | - | 0 | 0.0 | - | 1 | 1.3 | - | 3.3 | 0.1–83.7 | 0.467 |
| Unknown | 2 | 5.3 | - | 8 | 19 | - | 10 | 12.5 | - | 0.3 | 0.1–1.4 | 0.118 |
| 30-day outcome in patients with follow up – CCS class§ | ||||||||||||
| Class I | 26 | 68.4 | - | 23 | 54.8 | - | 31 | 38.8 | - | 1.3 | 0.6–2.5 | 0.540 |
| Class II | 8 | 21.1 | - | 11 | 26.2 | - | 31 | 38.8 | - | 0.8 | 0.3–2.2 | 0.672 |
| Class III | 2 | 5.3 | - | 0 | 0.0 | - | 7 | 8.8 | - | 5.5 | 0.3–119 | 0.275 |
| Unknown | 2 | 5.3 | - | 8 | 19 | - | 10 | 12.5 | - | 0.3 | 0.1–1.4 | 0.118 |
OR, odds ratio; CI, confidence interval; STEMI; ST Elevation Myocardial Infarction; NSTEMI, Non ST Elevation Myocardial Infarction; MIBI, myocardial perfusion imaging scan; CABG, coronary artery bypass graft; MI, myocardial infarction; CCF, congestive cardiac failure; CVA, cerebrovascular accident; LV, left ventricular; EF, ejection fraction
, 30-day outcome in patients with follow up investigations: STEMI – n = 29, NSTEMI – n = 26, All patients– n = 55;
, 30-day outcome in patients with follow up – NYHA Class: STEMI – n = 38, NSTEMI – n = 42, All patients – n = 80;
, 30-day outcome in patients with follow up – CCS Class: STEMI – n = 38, NSTEMI – n = 42, All patients – n = 80.