[Assessment of the size and distribution of the coronary artery selected for bypass grafting using myocardial contrast echocardiography during coronary artery bypass surgery].
We assessed the size and distribution of the native coronary artery selected for bypass grafting, using myocardial contrast echocardiography by injection of sonicated agents into a saphenous vein graft, during surgical revascularization. A total of 69 saphenous vein grafts (LAD, 16; D1, 10; OM, 13; PL, 13; RCA, 17) were performed in 36 patients with right dominant system at preoperative coronary angiogram. The size of the area of revascularized myocardium was quantified with the ratio of its circumference to a full circle depicted on the left ventricular short-axis view at the mid-papillary level. The extents of the revascularized area to LAD stenosing at the proximal portion was 28 +/- 6% and stenosing at the intermediate portion was 23 +/- 6%. D1, 10 +/- 2%; OM, 17 +/- 3%; PL, 22 +/- 6%, RCA, 17 +/- 5%. The extent of the areas perfused by the totally occluded coronary arteries with collateral vessels was similar to those perfused by the partially occluded coronary arteries. In conclusion, myocardial contrast echocardiography enabled the intraoperative assessment of the geometry of regional myocardial perfusion, and was very useful for the intraoperative evaluation of the effectiveness of the indicated surgical procedure.
Hirata
N
N
First Department of Surgery, Osaka University Medical School, Japan.
Nakano
S
S
Shimazaki
Y
Y
Taniguchi
K
K
Kaneko
M
M
Matsuwaka
R
R
Takahashi
T
T
Sakai
K
K
Sakaki
S
S
Matsuda
H
H
D001158:Arteries; D003287:Contrast Media; D001026:Coronary Artery Bypass; D003327:Coronary Disease / Q000000981:diagnostic imaging / Q000601:surgery; D003331:Coronary Vessels / Q000000981:diagnostic imaging*; D004452:Echocardiography / Q000379:methods*; D006801:Humans; D016343:Monitoring, Intraoperative; D012501:Saphenous Vein / Q000637:transplantation
D003287:Contrast Media