Effects of catecholamines on volemic replacement with saline solution and the impact on heart rate variability in rabbits subjected to hemorrhage. A study by spectral analysis

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Data

2014-11-01

Autores

Moraes, José Mariano Soares De
Vane, Matheus Fachini
Rodrigues, Denise De Fátima
Mostarda, Cristiano Teixeira
Moraes, Thiago Soares Mendes Moreira De
Vane, Lucas Fachini
Ganem, Eliana Marisa [UNESP]
Cavalcanti, Ismar Lima
Módolo, Norma Sueli Pinheiro [UNESP]
Vane, Luiz Antonio [UNESP]

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ISSN da Revista

Título de Volume

Editor

Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia

Resumo

PURPOSE: To verify the effects of different catecholamines on volemic expansion and on the autonomic nervous system in rabbits that were subjected to hemorrhage. METHODS: Twenty four rabbits subjected to hemorrhage (with a 25% loss of blood volume) and were randomly divided into four experimental groups: 1) HEMO Group underwent replacement with their own blood in an equal volume; 2) SS Group underwent replacement with saline solution (SS) in a volume that corresponded to three times the removed blood volume; 3) ISP Group underwent replacement with SS and isoprenaline; 4) FNL Group underwent replacement with SS and phenylephrine. Spectral Analysis of the heart rate and heart rate variability were performed from the recorded data. Hematocrit was measured throughout the experiment. RESULTS: Replacement with SS and an α- or β-agonist did not produce differences in the intravascular retention compared to replacement with SS alone. An analysis of HRV showed that the FNL group maintained the LF/HF ratio better than ISP and SS. CONCLUSIONS: No difference in vascular retention when α- or β- agonists were added to SS during post-hemorrhagic recovery. The animals in the FNL group maintained the integrity of the autonomic response within normal physiological standards during hemorrhagic stress.

Descrição

Palavras-chave

Catecholamines, Adrenergic alpha-Agonists, adrenergic beta-Agonists, Blood Volume, Hemorrhage, Autonomic Nervous System, Rabbits

Como citar

Acta Cirurgica Brasileira. Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia, v. 29, n. 11, p. 703-710, 2014.