Control of Water Balance in the Newborn
- 1 August 1963
- journal article
- research article
- Published by American Medical Association (AMA) in Archives of Pediatrics & Adolescent Medicine
- Vol. 106 (2), 137-146
- https://doi.org/10.1001/archpedi.1963.02080050139004
Abstract
The homeostatic capabilities and limitations of the newborn infant have been intensely studied in recent years. With increasing knowledge, the over-all effectiveness of neonatal reactivity in this respect becomes more impressive. However, responses related to renal function and especially to antidiuretic hormone (ADH) secretion and control of water excretion remain to be worked out in detail. Renal function during the neonatal period is characterized by a low maximal tubular excretory capacity with a relatively high filtration fraction, low rate of solute excretion, low urine flow rates, limited capacity to concentrate urine, and delayed excretion of water loads. Several scholarly reviews have summarized the accumulated data on this subject.1-7 Investigations of the response to thirsting, water loading, and vasopressin (Pitressin) administration have shown the newborn infant to be able to respond with increases and decreases of urine osmolality, indicating the capacity for ADH secretion and renal tubular response to ADH,Keywords
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