Mid-short-term risk factors for chronic renal failure in children with posterior urethral valve.

OBJECTIVES

To analyze the mid-short-term risk factors for chronic renal failure (CRF) in children with posterior urethral valve (PUV) after valve ablation.

MATERIALS AND METHODS

A retrospective study of 143 patients with PUV who underwent operation was performed. Patients were divided into CRF group (n = 39) and non-CRF group (n = 104). Clinical data of both groups such as the first resection age, last resection age, number of operations, the maximal detrusor pressure (Pdet), and vesicoureteral reflux (VUR) were collected and analyzed.

RESULTS

The first resection age, last resection age, and the Pdet of patients in the CRF group were higher than those of patients in the non-CRF group (P < 0.05). Multiple regression analysis showed that the indicators related to chronic renal failure were last resection age (β = 1.034, P < 0.05) and Pdet (β = 1.068, P < 0.05). The cut-off value of last resection age was 35.5 months, Pdet was 41.65 cmHO. There was positive correlation of final blood creatinine with last resection age and Pdet.

CONCLUSION

The last resection age and Pdet are the risk factors of chronic renal failure in children with PUV. A Pdet of lower than 41.65 cmHO indicates a good prognosis of renal function in patients with PUV.