Impact of diabetes on early and mid-term survival after coronary artery bypass graft surgery in the Hong Kong Chinese population.
OBJECTIVE
To determine the impact of diabetes on early and mid-term survival in the Hong Kong Chinese population undergoing coronary artery bypass graft surgery.


METHODS
Prospective study.


METHODS
Regional hospital, Hong Kong.


METHODS
A total of 904 consecutive patients following coronary artery bypass graft surgery from November 1999 to December 2003 were prospectively analysed. Among them, 377 (42%) diabetic and 527 (58%) non-diabetic patients were evaluated.


METHODS
Hospital mortality, mid-term mortality, and percutaneous coronary intervention-free survival.


RESULTS
The diabetic group had a higher risk score than the non-diabetic group (mean+/-standard deviation: EuroSCORE 4.7+/-3.4 and 3.6+/-3.4, respectively; P<0.001). Hospital mortality was 3.4% in the diabetic group compared to 2.8% in the non-diabetic group (P=0.698). Multiple logistic regression analysis identified left ventricular ejection fraction of less than 30% and preoperative intubation as independent risk factors for early hospital death. There were 81 late deaths and the actuarial survival at 48 months for the diabetic and non-diabetic patients were 86% and 90%, respectively (P=0.298). The angina-free survival and percutaneous coronary intervention-free survival at 48 months for the diabetic and non-diabetic patients yielded no statistically significant difference.


CONCLUSIONS
Diabetes mellitus was not a predictor of early and mid-term mortality after coronary artery bypass graft surgery in our Chinese population. Furthermore, diabetes did not affect angina recurrence or intervention free-survival up to 4 years.
Au
W K
WK
Division of Cardiothoracic Surgery, Department of Surgery, University of Hong Kong, Grantham Hospital, Hong Kong. auwingkuk@yahoo.com.hk
Lam
K T
KT
Cheng
L C
LC
Chiu
S W
SW
D000368:Aged; D002681:China / Q000208:ethnology; D001026:Coronary Artery Bypass / Q000401:mortality*; D003327:Coronary Disease / Q000401:mortality* / Q000601:surgery*; D003925:Diabetic Angiopathies / Q000208:ethnology / Q000401:mortality* / Q000601:surgery*; D005260:Female; D006723:Hong Kong; D017052:Hospital Mortality; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D013318:Stroke Volume; D016019:Survival Analysis