Table 2: Baseline Clinical Presentations, Investigations and Discharge Diagnosis of Study Cohort

ACS without Prior CABG ACS with Prior CABG P
Presentation (%)
Ischemic type chest pain

79.7

73.1

0.001
Atypical chest pain 6.6 5.9 0.63
Dyspnea 9.5 14.8 0.0005
Cardiac arrest 2.4 2.8 0.53
BP Mean (SD) mmHg
 Systolic 138 [120 - 160] 137 [120 - 160] 0.55
 Diastolic 80 [70 - 95] 80 [70 - 90] < 0.0001
Heart rate (mean) 83 [70 - 98] 80 [70 - 97] 0.20
Killip Classification (%) < 0.0001
Killip I 78.9 66.9
Killip II-IV 21.1 33.1
Echocardiographic findings
Echocardiogram done (%)

61.9

51.5

< 0.0001
LVEF ≤ 40% 29.8 49.4 < 0.0001
Discharge Diagnosis (%)STEMI
39.6

8.9

< 0.0001
NSTEMI 31.6 41.4 < 0.0001
UA 27.6 46.6 < 0.0001
LBBB MI 1.2 3.0 0.002
Lab. Investigations
Total cholesterol (mg/dL)

4.6 [3.5-5.6]

4.3 [3.5-5.3]

< 0.0001
LDL (mg/dL) 3.1 [2.4-4.0] 2.8 [2.2-3.7] < 0.0001
HDL (mg/dL) 1.0 [0.8-1.2] 0.9 [0.8-1.2] 0.11
Triglycerides (mmol/L) 1.6 [1.1–2.3] 1.5 [1.1– 2.3] 0.54
Creatinine (µmol/L) 88 [62-106] 97 [70-123] < 0.0001

LVEF: left ventricular ejection fraction, STEMI: ST segment elevation myocardial infarction, NSTEMI: non ST segment elevation myocardial infarction, UA: unstable angina, LBBB MI: left bundle branch block myocardial infarction, LDL: Low-density lipoprotein cholesterol, HDL: High-density lipoprotein cholesterol.

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