Abstract
Posterior urethral valve (PUV) is the most common congenital cause of bladder outflow obstruction in male infants. Despite timely treatment, renal damage can still occur in the long-term leading to chronic kidney disease (CKD). A retrospective review of all PUV patients in a single tertiary institution between April 1998 and July 2019 was conducted to analyze their presentations, management and outcomes. Long-term renal function, radiologic scans and somatic growth were evaluated. A total of 16 patients were included in this study. Two patients who defaulted all follow-ups were excluded. Seven patients (43.7%) presented in the antenatal period; four patients (25%) presented in the neonatal period and five patients (31.3%) presented in the post-neonatal period. Primary transurethral fulguration of valves was done in 13 patients, while three had vesicostomies as the primary procedure. Three patients had associated anterior urethral valves (AUV), which were treated endoscopically. Nine boys had additional procedures for diversion and undiversion, VUR, non-functioning kidney and clean intermittent catheterization. Ten patients had urodynamic studies performed, of which eight patients received anticholinergic therapy. Eleven patients had DMSA scans, of which three patients had a normal study and eight patients showed unilateral reduced function. Four patients were diagnosed with CKD on long-term follow-up duration over 5 years. All patients were shown to have good somatic growth. Patients with PUV can suffer from complications despite primary treatment. In our small cohort, a quarter of our patients developed CKD on follow-up. Thus, patients need long-term follow-up to optimize bladder and renal function.
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