Abstract 370: Contrast-Induced Nephropathy and Long-Term Outcomes in Patients With Diabetes Undergoing Coronary and Peripheral Angiography and Intervention
Background: Patients with diabetes may be at increased risk of contrast-induced nephropathy (CIN) when undergoing coronary and/or peripheral angiography or intervention but there is little data on long-term outcomes. We examined the relationship between diabetes, CIN and long-term outcomes in patients undergoing coronary and/or peripheral angiography and intervention. Methods and Results: We studied 4070 consecutive, predominantly (98%) male patients undergoing coronary and peripheral angiography and intervention and assessed the association between diabetes, CIN and long-term outcomes including renal dysfunction at 3 months, the need for dialysis and mortality. The mean age of the patients was 66.6 years. Approximately two fifths of the patients (n=1671, 41.05%) were diabetic. Patients with diabetes were the same age but had higher baseline creatinine compared to the patients without diabetes. CIN occurred in 70 (4.19%) diabetic patients and in 64 (2.67%) patients without diabetes at 72 hours after the procedure (odds ratio [OR] 1.59; 95% confidence interval [CI] 1.13 - 2.25; P=0.008). At 3 months, renal dysfunction was seen in 179 (10.71%) diabetic patients versus 174 (7.25%) of the non-diabetic group (OR 1.53, CI 1.23 - 1.91; P=0.0001). After a follow-up of 5 years, 31 (1.86 %) patients with diabetes had developed end-stage renal disease and were started on dialysis versus 13 (0.54 %) of the non-diabetic group (OR 3.47, CI 1.81 - 6.65; P<0.0001). 478 (28.61 %) patients of the diabetic group had died versus 479 (19.97 %) of the non-diabetic group (OR 1.61, CI 1.39 - 1.86; P<0.0001). On multivariate analysis, after adjustment for age, comorbidities, medical therapy and baseline creatinine, the presence of diabetes was significantly associated with CIN (OR 1.50, CI 1.06 - 2.43: p=0.02) and was significantly associated with the incidence of end stage renal disease requiring dialysis (OR 3.64, CI 2.07-10.04; P<0.0001) and with mortality at 5 years (OR 1.58, CI 1.42-2.03, P<0.0001). Conclusion: In this cohort of patients undergoing coronary and/or peripheral angiography and intervention diabetes was associated with CIN, with end-stage renal disease and the need for hemodialysis and was associated with an increased mortality.