Assessment of the left thoracic artery graft late postoperative patency by ultrasound contrast with angiography
10.3760/cma.j.issn.1004-4477.2012.01.006
- VernacularTitle:左胸廓内动脉转流术后远期通畅性的超声与冠状动脉造影对照研究
- Author:
Jin TIAN
;
Zhian LI
;
Yihua HE
;
Lin SUN
;
Ya YANG
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Internal mammary coronary artery anastomosis;
Internal thoracic artery;
Color Doppler coronary flow imaging;
Coronary angiography
- From:
Chinese Journal of Ultrasonography
2012;21(1):19-22
- CountryChina
- Language:Chinese
-
Abstract:
Objective To access the left internal thoracic artery (LITA) graft late postoperative patency after coronary artery bypass grafting (CABG) by peripheral blood vessel ultrasound combined with color Doppler coronary flow imaging (CDCFI).In contrast with angiography,try to find available flow parameter to access graft patency.MethodsForty-six patients with CABG more than 1 year postoperatively followed-by angiography were detected by ultrasound.The LITA graft and left anterior descending artery were examined.Systolic and diastolic peak velocity(Smax,Dmax),velocity time integral(VTIs,VTId)of each segment were measured separately.The ratio of diastolic and systolic peak velocity (D/S),and diastolic velocity time integral fraction(DVTIF) were calculated.All patients were divided into groups according to angiography results.ResultsThirty -one LITA grafts were patent,11 were dysfunctional,4 were occlusive.According to the angiography results,the flow parameters of the proximal segment of LITA graft were significant.The D/S and DVTIF of patent group was higher than that of dysfunctional group.The diastolic peak velocity of distal segment of LAD of patent group was higher than that of dysfunctional group.ConclusionsPeripheral blood vessel ultrasound combined with CDCFI could provide the evidence to access the patency of the graft.It was an effective method for the clinical follow-up.
