Table 1

Patient demographics

CAG guided group (n=54)IVUS guided group (n=54)p Value
*Modified American Heart Association/American College of Cardiology classification.
†Calcium present in an arc >90°.
Continuous data are mean (SD).
CABG, coronary artery bypass grafting; CAG, coronary angiography; IVUS, intravascular ultrasound; LVEF, left ventricular ejection fraction; MI, myocardial infarction; PCI, percutaneous coronary intervention; QCA, quantitative coronary angiography.
Clinical data
    Age (years)57 (33–78)57 (40–73)NS
    Prior CABG (%)47NS
    Prior PCI (%)156NS
    Prior MI (%)4454NS
    Diabetes (%)114NS
    Current smoker (%)1530NS
    History of hypertension (%)2420NS
    Hypercholesterolaemia (%)9396NS
Angiographic data
    Number of diseased vesselsNS
    Lesion artery location (%)NS
        Left anterior descending4648
        Right coronary2828
    Lesion classification (%)*NS
    Lesion length by QCA (mm)13.3 (9.2)13.4 (11.7)NS
    Size of reference vessel by QCA (mm)2.8 (0.5)2.8 (0.5)NS
    LVEF by ventriculography (%)69 (12)65 (12)NS
IVUS data
    Lesion length by IVUS (mm)24.2 (15.1)23.0 (15.6)NS
    Size of reference vessel by IVUS (mm)3.6 (0.4)3.6 (0.5)NS
    Calcified plaque (%)†2525NS