Takeda S, Iizuka H, Miyamoto H, Tomaru T. Effects of KRN2391-induced hypotension on the endocrine system and carbohydrate metabolism in halothane-anesthetized dogs.
J Anesth 1998;
12:69-75. [PMID:
28921246 DOI:
10.1007/bf02480775]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/1997] [Accepted: 01/29/1998] [Indexed: 11/30/2022]
Abstract
PURPOSE
The hemodynamic profiles of KRN2391-induced hypotension have been reported to be a hyperdynamic state. However, the endocrine effects of KRN2391-induced hypotension remain to be elucidated. We investigated the endocrine and metabolic effects of KRN2391-induced hypotension on the plasma concentrations of catecholamines, aldosterone, cortisol, glucose, and lactic acid and on plasma renin activity.
METHODS
Eight dogs were anesthetized with 087% halothane in oxygen. After a baseline period, mean arterial pressure (MAP) was lowered to 60 mmHg for 60min by the infusion of KRN2391.
RESULTS
KRN2391-induced hypotension resulted in a 50% decrease (P<0.01) in MAP due to a 80% reduction (P<0.01) in systemic vascular resistance associated with a 224% increase (P<0.01) in cardiac index. Plasma norepinephrine concentrations increased (P<0.01) after 60 min of hypotension. Plasma epinephrine concentrations and plasma renin activity both increased (P<0.05) during the hypotensive period. Plasma aldosterone concentrations remained unchanged during the hypotensive period, but then increased (P<0.05) after termination of KRN2391. Plasma cortisol concentrations remained unchanged throughout the observation period. Plasma glucose concentrations increased (P<0.01) during the hypotensive period. Plasma lactic acid concentrations increased (P<0.01) throughout the observation period.
CONCLUSION
KRN2391-induced hypotension activates the sympathetic nervous system and consequently may modulate the renin-angiotensin-aldosterone axis and carbohydrate metabolism.
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