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Related Experiment Videos

Positive bladder cooling test in neurologically normal young children

G Geirsson1, S Lindström, M Fall

  • 1Department of Surgery, Sahlgrenska Hospital, Göteborg, Sweden.

The Journal of Urology
|February 1, 1994
PubMed
Summary

The bladder cooling test, a urodynamic investigation, is a positive infant reflex in children under 4 years old. This reflex is suppressed by central nervous system maturation in older children.

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Area of Science:

  • Pediatric Urology
  • Neuro-urology
  • Developmental Physiology

Background:

  • The bladder cooling test is a diagnostic tool for lower urinary tract disorders.
  • Understanding the developmental changes in bladder reflexes is crucial for pediatric urology.

Purpose of the Study:

  • To investigate the bladder cooling test's utility in neurologically intact children.
  • To determine the age-related changes and significance of a positive bladder cooling test.

Main Methods:

  • The bladder cooling test was performed on 50 neurologically intact infants and children aged 6 months to 13 years.
  • The test involved rapid infusion of cold saline (0-8°C) into the bladder with simultaneous pressure monitoring.
  • A positive test was defined as a sustained reflex detrusor contraction similar in magnitude to a micturition contraction.

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Main Results:

  • The bladder cooling test was positive in children within the first 4 years of life.
  • The test was typically negative in children older than 5 years.
  • A positive test indicated a sustained reflex detrusor contraction.

Conclusions:

  • A positive bladder cooling test represents an infant reflex response.
  • Maturation of the central nervous system, with descending inhibition from higher centers, suppresses this reflex in older children.
  • This finding aids in understanding normal neurodevelopmental changes in bladder function.