Document Detail

Effects of continuous rate infusion of butorphanol in isoflurane-anesthetized calves.
MedLine Citation:
PMID:  25054878     Owner:  NLM     Status:  In-Data-Review    
PURPOSE: To assess the hemodynamic changes and bispectral index (BIS) following administration of a continuous rate infusion (CRI) of butorphanol in isoflurane-anesthetized calves.
METHODS: Eight calves weighing 110 ± 12 kg were included in the study. Anesthesia was induced with 5% isoflurane in O2 delivered via face mask and maintained with end-tidal concentration of 1.4%. IPPV was set to a peak inspiratory airway pressure of 15 cmH2O and respiratory rate of six breaths minute-1. Forty minutes after the start of anesthetic maintenance, 0.1 mg kg-1butorphanol was administered intravenously, followed by a CRI of 20 µg kg-1 minute-1. Hemodynamic variables and BIS were recorded before butorphanol administration (T0), and at 10, 20, 40 and 80 minutes following the CRI. Anesthesia was discontinued after the last recording and the calves were allowed to recover. The time to sternal recumbency (SRE) and standing (ST) were evaluated.
RESULTS: There were no significant differences between the moments in all hemodynamic variables and BIS. The time to SRE and ST was 9 ± 5 and 14 ± 7 minutes, respectively.
CONCLUSION: The continuous rate infusion did not produce clinically relevant changes in hemodynamic or bispectral index values compared to baseline in mechanically ventilated and unstimulated calves anesthetized at 1.4% isoflurane.
Marcelo Augusto de Araújo; Verônica Batista de Albuquerque; Maurício Deschk; Thomas Alexander Trein; Fabrício de Oliveira Frazílio; Paulo Sergio Patto Dos Santos
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Acta cirúrgica brasileira / Sociedade Brasileira para Desenvolvimento Pesquisa em Cirurgia     Volume:  29     ISSN:  1678-2674     ISO Abbreviation:  Acta Cir Bras     Publication Date:  2014 Jul 
Date Detail:
Created Date:  2014-07-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9103983     Medline TA:  Acta Cir Bras     Country:  Brazil    
Other Details:
Languages:  eng     Pagination:  465-71     Citation Subset:  IM    
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