Provoked Enuresis-like Episodes in Healthy Children 7 to 12 Years Old

AbstractPurpose: We evaluated whether a water load before bedtime provoked enuresis episodes in healthy children with no previous enuresis. We also studied pelvic floor activity during an enuresis episode and the completeness of bladder emptying, attempted to identify a possible trigger mechanism for nocturnal enuresis, and investigated any age and sex differences regarding the frequency of provoked enuresis episodes.Materials and Methods: We evaluated 55 healthy volunteers (22 girls and 33 boys) 7 to 12 years old who were dry from age 5 years and had no urological or other complaints. Subjects were admitted to the hospital for 4 consecutive nights. Night 1 was for adaptation without a water load. On nights 2 to 4, 25 ml./kg. body weight of water were given orally half an hour before bedtime. During the night pelvic floor activity was monitored, and the time and volume of enuresis and nocturia episodes were noted.Results: In 17 subjects 28 enuresis-like episodes were provoked, generally comprising incompl...