1. Johnny

Johnny is a 5 year old boy with a history of posterior urethral valves identified and ablated in the newborn period. He is growing fairly well, and is 105 cm tall (10%le). On followup, his serum creatinine is 0.8.

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* 2. What would be an acceptable blood pressure for Johnny?

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* 3. Johnny's mother wants to know if having posterior urethral valves is a common cause of kidney disease in children. How would you answer her?