| pubmed-article:19491127 | pubmed:abstractText | We determined whether ultrasonographic left internal mammary artery (LIMA) findings correspond with 64 multislice computed tomography (MSCT) in patients 12 years after coronary artery bypass grafting. We included 34 patients (63.2+/-9.2 years), 16 with conventional single LIMA (group I) and 18 arterial T-grafts (group II), in a cross-sectional study. Patients underwent transthoracic proximal LIMA ultrasonography at rest and during the Azoulay maneuver, transthoracic echocardiography of the left ventricle and 64-MSCT, 11.5+/-1.4 years postoperatively. MSCT scans showed three string sign LIMA grafts (19%) in group I and three distal string sign LIMA grafts (17%) and 16 occluded T-graft anastomoses (22%) in group II. LIMA diameters and areas are significantly larger in group II in the origin, 3.5+/-0.7 vs. 2.5+/-0.5 mm, P=0.00007 and 0.09+/-0.04 vs. 0.05+/-0.02 cm(2), P=0.00019 and in the third intercostal space, 3.4+/-0.7 vs. 2.5+/-0.5 mm, P=0.00009 and 0.09+/-0.03 vs. 0.05+/-0.02 cm(2), P=0.000047. Most ultrasonographic LIMA findings do not differ between the groups. Thus, proximal LIMA diameters and areas are significantly larger in T-grafts and ultrasonographic variables equalize between the groups at rest and during the Azoulay maneuver 12 years after surgery. | lld:pubmed |
