Risk of cardiovascular disease in kidney donors as a chronic kidney disease cohort

Kidney donors are a chronic kidney disease (CKD) cohort virtually guaranteed to have a low risk of CKD progression, as they are screened for CKD risk factors beforehand. However, there has been no evidence of cardiovascular disease (CVD), which is an outcome of CKD, for these donors. In this study, the conditions of CKD in kidney donors were investigated and the risk of CVD was estimated using nephrectomy patients, who are thought to have a crude risk of CKD progression, as a model. In 86 kidney donors, estimated glomerular filtration rates (eGFR) were measured, and they were classified according to the CKD stage. Plasma brain natriuretic peptide (BNP) concentrations and urinary albumin (mg/g Cre) levels were also measured as markers for cardiovascular evaluation. A total of 200 nephrectomy patients were similarly classified according to the CKD stage. A multivariate regression analysis was carried out to evaluate the risk factors of CVD. Among the kidney donors, 4.9% were CKD stage 1, 24.6% stage 2 and 70.5% stage 3. Among the nephrectomy patients, 20.5% were CKD stage 2, 66.6% stage 3, 9.5% stage 4 and 3.4% stage 5. Plasma BNP concentrations of the donors were significantly higher compared to those of healthy volunteers (24.5±24.9 vs. 8.6±7.6 pg/ml, p