Introduction:

The estimation of the glomerular filtration rate from the serum concentration of creatinine in patients with sickle cell disease is abnormal when there is an extensive deterioration of renal function.

Objective:

To estimate the glomerular filtration rate with the use of creatinine, cystatin C and both determinations, in adults with sickle cell disease. Determine if there are differences between these methods.

Methods:

Observational, descriptive cross-sectional study. Forty-four adults with sickle cell disease were included in whom the glomerular filtration rate was estimated using creatinine, cystatin C and both, according to the CDK-EPI formulas.

Results:

Discrepancies were found in the glomerular filtration rate estimated by creatinine, by cystatin C and by both (means: 112.2 ± 28.4; 55.7 ± 23.1 and 75.1 ± 24.7 mL/min/1.73 m2; respectively). The highest percentages of patients with creatinine hyperfiltration correspond to the SS genotype and all those with stage 4 chronic kidney disease (estimated filtration by cystatin C and by the combination of both markers), have this type of hemoglobinopathy. Hyperfiltration was more common in the youngest and decreased filtration in those older than 40 years.

Conclusions:

The estimation of the glomerular filtration rate shows differences between the three methods studied. With the use of creatinine, it is overestimated and a high proportion of patients are classified as having hyperfiltration. The use of cystatin C or the combination of both determinations could offer a more accurate estimate of glomerular filtration rate in patients with sickle cell disease.

        · resumen en Español     · texto en Español     · Español ( pdf )