Table 1

Characteristics of patients (n = 517) suffering from chronic refractory angina pectoris. Modified from TenVaarwerk et al.11

CAD, coronary artery disease; CABG, coronary artery bypass graft surgery; IDDM, insulin dependent diabetes mellitus; LVEF, left ventricular ejection fraction; NYHA, New York Heart Association functional class; PTCA, percutaneous transluminal coronary angioplasty.
Sex71% male
Age (years)63.9 (10.1)
Clinical presentation
    Duration of angina pectoris (years)8.1 (6.3)
    NYHA class (mean)3.5 (0.7)
    LVEF ⩽40%24%
    Previous myocardial infarction66%
    Three vessel disease68%
Risk factors
    Family CAD61%