n Cardiovascular Journal of Africa - Sickle cell trait is not associated with chronic kidney disease in adult Congolese patients : a clinic-based, cross-sectional study : cardiovascular topics




The aim of this study was to evaluate the determinants of chronic kidney disease (CKD) with special emphasis on sickle cell trait (SCT).

Three hundred and fifty-nine patients (171 men and 188 women), aged 18 years or older, with reduced kidney function (eGFR < 90 ml/min/1.73 m2) and seen at secondary and tertiary healthcare in Kinshasa were consecutively recruited in this cross-sectional study. Serum creatinine and haemoglobin electrophoresis were performed in each patient. CKD was defined as < 60 ml/min/1.73 m2. Logistic regression analysis was used to assess determinants of CKD with a special emphasis on SCT. A -value < 0.05 defined the level of statistical significance.
SCT was present in 19% of the study population; its frequency was 21 and 18% ( > 0.05) in patients with and without CKD, respectively. In multivariate analysis, sickle cell trait was not significantly (OR: 0.38; 95% CI: 0.559-1.839; = 0.235) associated with CKD; the main determinants were dipstick proteinuria (OR: 1.86; 95% CI: 1.094-3.168; = 0.02), the metabolic syndrome (OR: 1.69; 95% CI: 1.033-2.965; = 0.03), haemoglobin ≥ 12 g/dl (OR: 0.36; 95% CI: 0.210-0.625; = 0.001), and personal history of hypertension (OR: 2.16; 95% CI: 1.202-3.892; = 0.01) and of diabetes mellitus (OR: 2.35; 95% CI: 1.150-4.454; = 0.001).
SCT was not an independent determinant of CKD in the present case series. Traditional risk factors emerged as the main determinants of CKD.


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