A 5-Year-Old Boy Is Brought to the Office by His

A 5-year-old boy is brought to the office by his parents due to bed-wetting.  The patient has stayed dry during the day since age 3 but has continued to wet the bed 4 or 5 nights a week.  He urinates approximately 5 times during the day; the urinary stream is continuous and strong.  Bowel movements occur daily and are soft.  The patient is otherwise healthy and takes no daily medications.  Height and weight are tracking along the 75th percentile.  Vital signs and examination are normal.  Urinalysis is unremarkable.  This patient's bed-wetting is most likely caused by which of the following?

A) Bladder flaccidity
B) Brain maturational delay
C) Increased bladder capacity
D) Osmotic diuresis
E) Posterior urethral valves

Correct Answer:

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