Effects of a convertible to-and-fro and circle anesthetic system on cardiopulmonary variables in isoflurane anesthetized horses

Authors

  • Claudio Corrêa Natalini UFRGS
  • Alexandre da Silva Polydoro UFRGS
  • Ruben Lundgren Cavalcanti UFRGS
  • Luciana Queiroga Branquinho UFRGS
  • Nadia Crosignani UFRGS
  • Priscila Beatriz Serpa UFRGS
  • Rodrigo Gonçalves Schallenberger UFRGS
  • Bruna Favieiro Pellin de Molnar UFRGS
  • Adriano Carregaro UFSM
  • Fábio Futema Universidade de Guarulhos

DOI:

https://doi.org/10.22456/1679-9216.17290

Keywords:

Isoflurano, Aparelhos de anestesia, Eqüinos, Anestesia Geral

Abstract

Six healthy adult horses two male and four female, mean body weight of 424 + 44.1kg, were anesthetized with xylazine, ketamine/diazepam and isoflurane for 60 minutes using a convertible to-and-fro and circle system. Variables analyzed were arterial blood pH, carbon dioxide partial pressure (PaCO

 

2) and oxygen partial pressure (PaO2), respiratory rate(RR), and blood pressure. The horses were allowed to breath spontaneously, and were positioned in right lateral recumbency. The arterial O2 values were significantly higher during isoflurane anesthesia when compared to the baseline values, and significantly lower after induction with ketamine/diazepam although arterial hypoxemia were not present. The arterial PCO2 values were significantly higher from baseline values during isoflurane anesthesia occurring arterial hypercapnia and mild respiratory

acidosis. The arterial pH changes paralleled the changes in PaCO

 

2. Respiratory rate values were significantly lower during isoflurane anesthesia when compared to baseline values. All values remained within accepted range for lateral recumbent spontaneously breathing anesthetized horses. There were no significant differences between the circle and the to-and-fro system, demonstrating that either system is safe to maintain isoflurane anesthesia in adult horses.

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Author Biographies

Claudio Corrêa Natalini, UFRGS

Alexandre da Silva Polydoro, UFRGS

 

 

Departamento de farmacologia, Universidade Federal do Rio Grande do Sul (UFRGS), Centro de Pesquisas do Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, RS/Brasil.

Ruben Lundgren Cavalcanti, UFRGS

 

 

Programa de Pós-graduação em Fisiologia, Instituto de Ciências Básicas da Saúde (ICBS), UFRGS.

Luciana Queiroga Branquinho, UFRGS

 

 

Programa de Pós-graduação em Fisiologia, Instituto de Ciências Básicas da Saúde (ICBS), UFRGS.

Nadia Crosignani, UFRGS

 

 

Programa de Pós-graduação em Fisiologia, Instituto de Ciências Básicas da Saúde (ICBS), UFRGS.

Priscila Beatriz Serpa, UFRGS

 

 

Faculdade de Veterinária (FaVet), UFRGS.

Rodrigo Gonçalves Schallenberger, UFRGS

 

 

Faculdade de Veterinária (FaVet), UFRGS.

Bruna Favieiro Pellin de Molnar, UFRGS

 

 

Faculdade de Veterinária (FaVet), UFRGS.

Adriano Carregaro, UFSM

 

 

Departamento de Clínica de Pequenos Animais, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS/Brasil.

Fábio Futema, Universidade de Guarulhos

 

 

Faculdade de Medicina Veterinária, Universidade de Guarulhos, São Paulo.

Published

2018-03-30

How to Cite

Natalini, C. C., Polydoro, A. da S., Cavalcanti, R. L., Branquinho, L. Q., Crosignani, N., Serpa, P. B., Schallenberger, R. G., Molnar, B. F. P. de, Carregaro, A., & Futema, F. (2018). Effects of a convertible to-and-fro and circle anesthetic system on cardiopulmonary variables in isoflurane anesthetized horses. Acta Scientiae Veterinariae, 36(3), 229–233. https://doi.org/10.22456/1679-9216.17290

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