[Long-term outcomes after elective coronary stenting in diabetic patients]

To observe the long-term outcomes following coronary stenting in diabetic patients with coronary artery disease.

This cohort study comprised 808 consecutive patients with coronary artery disease who underwent elective coronary stenting, including 174 diabetic patients and 634 non-diabetic patients. The long-term follow-up outcomes were compared.

Procedural success rate was similar (96.0% vs 96.1%). Follow-up rate was 95.3%. Mean follow-up duration was (19 +/- 7.8) months (ranged from 6 to 42 months). Compared with non-diabetic patients, diabetic patients had less improvement of cardiac function (52.2% vs 61.0%), more re-admission (42.7% vs 32.5%), and higher occurrence rates of major adverse cardiac events (30.6% vs 22.2%), angiographic restenosis rate (19.1% vs 12.5%) and mortality (10.2% vs 4.6%). Logistic regression analysis indicated that diabetes mellitus was an independent predicator of death (odd ratio 2.20, 95% CI 1.12 approximately 4.33, P = 0.022) and restenosis (odd ratio 1.66, 95% CI 1.04 approximately 2.67, P = 0.035).

Diabetic patients undergoing elective coronary stenting have acceptable long-term outcomes, but diabetes mellitus is still independently associated with worse late prognosis.