The comparison of different clinical, laboratory, and angiographical parameters in diabetic stent restenosis.

This investigation was undertaken to detect the midterm stent restenosis rate in diabetic patients and the important clinical, laboratory, and angiographic factors for in-stent restenosis in the same group. Our results found the real midterm stent restenosis rate to be 40.3% in 159 stents placed in 134 diabetic patients. For diabetic stent restenosis, the most important angiographic and clinical factors in univariate logistic regression analyses were the used stent diameter (P < 0.001), reference vessel diameter (P < 0.01); patient age (P < 0.01); duration of diabetes mellitus (P < 0.01); unstable angina prior to stenting (P < 0.05); dyslipidemia (P < 0.05); and diseased vessel number (P < 0.05). The most important factors in multivariate analysis were the used stent length (P < 0.05) and dyslipidemia (P < 0.05). Classic risk factors for nondiabetic stent restenosis were also found to be important for diabetic stent restenosis. The advanced age and duration of diabetes mellitus and the number of diseased coronary vessels and segments may be other specific risk factors for diabetic stent restenosis.