20 March 2015 : Original article
Ann Transplant 2015; 20:154-159
BACKGROUND: New-onset diabetes mellitus after transplantation (NODAT) is a serious and frequent complication of solid organ transplantations. NODAT leads to 2-3 times higher cardiovascular morbidity and mortality. Visceral obesity is a key factor for diabetes mellitus type 2 and metabolic syndrome development, and is an independent risk factor for cardiovascular diseases.
MATERIAL AND METHODS: The series consisted of 167 patients after primary kidney transplantation from a dead donor (64 patients had developed NODAT), average age of the series was 46.1±11.6 years. We retrospectively examined waist circumference, body mass index, and weight gain in the 12th month after transplantation. We examined average level of triglycerides, cholesterol, and immunosuppression throughout the 12 monitored months.
RESULTS: Patients with NODAT were significantly older (P=0.004) and had greater waist circumference (P<0.0001) and higher average sirolimus level (P=0.0262). We identified the following independent risk factors for NODAT by using multivariate analysis: age at the time of transplantation above 50 years (HR=2.5038, [95% CI: 1.7179 to 3.6492], P<0.0001), waist circumference in men greater than 94 cm (HR=1.9492, [95% CI: 1.1697 to 3.2480], P=0.0104) and in women greater than 80 cm (HR=4.5018, [95% CI: 1.8669 to 10.8553], P=0.009). By using correlation coefficient we have proved that greater waist circumference was related to higher incidence of NODAT (r=0.1935, [95% CI: 0.01156 to 0.3630], P=0.0374). Graft survival (death censored) 12 months after kidney transplantation was 97.1% in the control group and 95.3% in the NODAT group (P=0.5381). Patient survival 12 months after kidney transplantation in the control group was 98.1% and in the NODAT group it was 96.9% (P=0.6113).
CONCLUSIONS: We identified waist circumference as an independent risk factor for NODAT in our analysis.
Keywords: Diabetes Mellitus, Immunosuppression, Kidney Transplantation, waist circumference
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