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Arginine vasopressin and renin in acutely ill children: implication for fluid therapy

M Gerigk1, H E Gnehm, W Rascher

  • 1Department of Paediatrics, University Children's Hospital, Giessen, FRG.

Acta Paediatrica (Oslo, Norway : 1992)
|May 1, 1996
PubMed

Insights

In acutely ill children, elevated arginine vasopressin (AVP) and plasma renin activity (PRA) suggest non-osmotic hormone release. This finding impacts fluid therapy choices for young patients during hospitalization.

Area of Science:

  • Pediatrics
  • Endocrinology
  • Nephrology

Background:

  • Vasoactive hormone levels in acutely ill children are not fully understood.
  • Acute illness can trigger complex physiological responses in pediatric patients.

Purpose of the Study:

  • To investigate plasma arginine vasopressin (AVP) and plasma renin activity (PRA) levels in hospitalized, acutely ill children.
  • To determine if hormone elevations are linked to non-osmotic stimuli.

Main Methods:

  • Measured plasma AVP and PRA in 103 acutely ill children and 31 controls undergoing elective surgery.
  • Compared hormone levels and plasma osmolality between groups.

Main Results:

  • Acutely ill children showed significantly elevated plasma AVP and PRA compared to controls.
  • Reduced plasma osmolality in ill children indicated non-osmotic, cardiovascular AVP release.
  • Hormone elevations were consistent across various underlying acute diseases.

Conclusions:

  • Acutely ill children exhibit elevated vasoactive hormone levels, independent of specific diagnoses.
  • Cardiovascular AVP activation poses a risk for hyponatremia with hypotonic fluid therapy.
  • Initial fluid management in acutely ill children should utilize half-normal or normal saline solutions.

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