Table 3

QCA and IVUS results before and after intervention

PreinterventionPostintervention
CAG guided
(n=54)
IVUS guided
(n=54)
p ValueCAG guided
(n=54)
IVUS guided
(n=54)
p Value
Data are mean (SD).
MLA, minimum lumen cross sectional area; MLD, minimum lumen diameter.
QCA data
    Diameter stenosis (%)64 (18)60 (17)NS26 (14)27 (10)NS
    MLD (mm)1.0 (0.5)1.1 (0.6)NS2.2 (0.5)2.3 (0.4)NS
IVUS data
    Diameter stenosis (%)54 (19)51 (19)NS19 (11)7 (12)<0.001
    Area stenosis (%)68 (11)68 (11)NS33 (18)12 (22)<0.001
    MLD (mm)1.5 (0.9)1.6 (0.9)NS2.9 (0.4)3.3 (0.5)<0.001
    MLA (mm2)2.5 (1.8)2.7 (2.0)NS6.9 (2.1)8.7 (2.5)<0.05