Table 1

Baseline characteristics of patients presenting with chest pain and left bundle branch block

All patients (n=56)Acute myocardial infarction* (n=18)Not acute myocardial infarction* (n=38)
*Diagnosis based on serum cardiac enzymes.
CABG, coronary artery bypass grafting; IDDM, insulin dependent diabetes mellitus; IHD, ischaemic heart disease; MI, myocardial infarction; NIDDM, non-insulin dependent diabetes mellitus; PCI, percutaneous coronary intervention.
Mean age (years) (range)68 (38–88)68 (38–77)67 (42–88)
Male sex42 (75%)12 (67%)30 (79%)
Smoking current/former15 (27%)/20 (36%)7 (39%)/3 (17%)8 (21%)/17 (45%)
Hypertension24 (43%)11 (61%)13 (34%)
Diabetes NIDDM/IDDM4 (7%)/2 (4%)1 (6%)/1 (6%)3 (8%)/1 (3%)
Family history of IHD28 (50%)12 (67%)16 (42%)
Hypercholesterolaemia27 (48%)8 (44%)19 (50%)
Previous angina pectoris41 (73%)13 (72%)28 (74%)
Previous MI26 (46%)11 (61%)15 (40%)
Previous PCI13 (23%)6 (33%)7 (18%)
Previous CABG6 (11%)2 (11%)4 (11%)