Clinical Characteristics and Outcomes of Patients with Acute Coronary Syndrome and Prior Coronary Artery Bypass Grafting in a Large Middle Eastern Cohort

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.