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J Pediatr Urol. 2010 Oct;6(5):501-5. doi: 10.1016/j.jpurol.2009.11.002. Epub 2009 Nov 24.

Development of bladder control in the first year of life in children who are potty trained early.

Author information

1
National Hospital of Pediatrics, Hanoi, Vietnam.

Abstract

OBJECTIVE:

To describe longitudinally the development of micturition patterns in children who are potty trained early.

SUBJECTS AND METHODS:

Healthy children in Vietnam from newborn up to 1 year were investigated every 3 months. This included mapping of the micturition pattern through the 4-h micturition observation method.

RESULTS:

Forty-seven children participated in all five investigations. At the ages of newborn, 3, 6, 9 and 12 months, 70%, 82%, 91%, 99% and 100% of the mothers, respectively, were potty training their children. Mean lowest bladder volume (voided volume + residual urine) triggering a micturition was 18 ml at the age of 2 weeks compared to 33 ml at 12 months. Post-void residual urine decreased according to age, and already at 9 months was less than 7 ml (mean 0.7 ml).

CONCLUSIONS:

The dyscoordination between the sphincter and detrusor muscle seems to have already disappeared at the age of 9 months in infants who are potty trained very early. These findings suggest that potty training can be beneficial in small children with urinary tract infections or renal scars.

PMID:
19939737
DOI:
10.1016/j.jpurol.2009.11.002
[Indexed for MEDLINE]

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