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Table 9 Incidence of sequelae in each risk group

From: The posterior urethral valves revisited: embryological correlation, clinical classification, and risk stratification of the spectrum

Major sequelae Low risk (n = 24) Intermediate risk (n = 52) High risk* (n = 26)
Recurrent UTI 2 (8%) 10 (19%) 8 (31%)
Obstructive voiding symptoms 1 (4%) 12 (23%) 15 (58%)
Persistent hydronephrosis 2 (8%) 18 (34%) 18 (69%)
Persistent VUR 12 (4%) 14 (54%)
Progressive renal scarring 9 (17%) 12 (46%)
Progressive uremia 1 (2%) 12 (46%)
Valve bladder syndrome 9 (17%) 18 (69%)
Systemic problems** 1 (2%) 14 (54%)
  1. *Significant overlap of complications was seen in both intermediate risk and high-risk groups
  2. **Systemic problems include metabolic acidosis, osteodystrophy, growth failure, etc.