Objective To compare vein graft patency after endos
copic great saphenous vein harvesting (EVH) and conventional open saphenous vein
harvesting (OVH) in coronary artery bypass grafting (CABG), and to identify ris
k factors
for vein graft stenosis. Methods The great saphenous vein was
h
arvested using an EVH method in 60 patients, 34 males and 26 females, who underw
ent CABG in the General Hospital of PLA between May 2006 and May 2009. The mean patient age was 66.6±9.2 years in the EVH group.The OVH group had 60 patients (40 males and 20 females with a mean age of 65.7±10.6 years), chosen to match the clinical characteristics of the EVH group. 64multislice computed tomography (64MSCT) was used to evaluate vein graft patency at six months and two years postoperatively. We also collected and analyzed
data on possible risk factors for vein graft stenosis. Results The harvesting time was longer in the EVH group than in the OVH group (52.5±13.3 minutes vs. 36.1±18.0 minutes, t=2.13, P＜0.05). The EVH group requireda greater number of repairs to veins than did the OVH group (2.2±13 vs. 0.9±0.6,t=2.60, P＜0.05). There were no statistically significant differences invein length, number of vein grafts, or vein graft flow between the two groups.
There was also no significant difference in vein graft patency between the EVH a
nd OVH groups at six months postoperatively (96.2% vs. 94.5%) or at two years po
stoperatively (90.2% vs. 91.5%). The average of vein graft blood flow was a risk
factor for vein graft stenosis(t=2.61, P=001). Conclusion
The EVH vein graft had a good patency rate at six months and two years a
fter the surgery.

Citation： YANG Ming,GAO Changqing,WANG Rong,et al .. Comparative Study of Vein Graft Patency Between Endoscopic and Open Saphenous Vein Harvesting in Coronary Artery Bypass Grafting. Chinese Journal of Clinical Thoracic and Cardiovascular Surgery, 2011, 18(6): 493-. doi: Copy