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Horm Metab Res 1986; 18(10): 713-716
DOI: 10.1055/s-2007-1012414
Clinical

© Georg Thieme Verlag, Stuttgart · New York

Plasma Catecholamine Levels during Water Immersion in Man

J. P. O'Hare, N. Dalton1 , J. M. Roland, J. Gooding, B. Payne2 , G. Walters, R. J. M. Corrall
  • Departments of Medicine and Chemical Pathology, Bristol Royal Infirmary, United Kingdom
  • 1Department of Clinical Chemistry, Guy's Hospital, London, United Kingdom
  • 2Department of Clinical Chemistry, St. Bartholomews' Hospital, London, United Kingdom
Further Information

Publication History

1985

1985

Publication Date:
14 March 2008 (online)

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Summary

In ten normal subjects thermoneutral neckout water immersion produced a highly significant natriuresis and diuresis mediated via an induced central hypervolaemia. During immersion suppression of plasma noradrenaline and adrenaline was observed but no change occurred in plasma dopamine levels.

No correlation was found between the suppression of noradrenaline and the diuresis and natriuresis.

The reduction in plasma noradrenaline observed may reflect a widespread diminution of sympatho-adrenal activity during water immersion. This reduction could be a consequence of the cardiovascular changes of immersion and may not be directly involved in the mechanism of the renal response.

Key-Words

Water Immersion - Volume Homeostasis - Catecholamines - Natriuresis