Cardiopulmonary effects of reverse Trendelenburg position at 5° and 10° in sevoflurane-anesthetized steers
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.vaa.2017.03.006 http://hdl.handle.net/11449/170268 |
Resumo: | Objective To assess the cardiopulmonary effects caused by reverse Trendelenburg position (RTP) at 5° and 10° in sevoflurane-anesthetized yearling steers. Study design Prospective, experimental study. Animals Eight Holstein steers aged (mean ± standard deviation) 12 ± 2 months and weighing 145 ± 26 kg. Methods In the first phase of the study, the individual minimum alveolar concentration (MAC) of sevoflurane was determined using electrical stimulation. In the second phase, the effects of RTP were assessed. The animals were anesthetized on three separate events separated by ≥7 days in an incomplete crossover design: control treatment using a table without tilt (RTP0); treatment with the table at 5° RTP (RTP5) and table tilted 10° RTP (RTP10). Subjects were physically restrained in dorsal recumbency on the table, which was already tilted according to each treatment. Anesthesia was induced with sevoflurane at 8% in 5 L minute–1 oxygen via face mask followed by maintenance with sevoflurane at 1.3 MAC and spontaneous breathing. Cardiopulmonary variables were obtained immediately after instrumentation (T0) and then after 30, 60, 120 and 180 minutes (T30, T60, T120 and T180, respectively). Results The mean sevoflurane MAC for the eight steers was 2.12 ± 0.31%. Cardiac output was lower at all time points and the systemic vascular resistance index was higher at T120 and T180 in RTP10 compared with RTP0. Oxygen consumption was lower at T0 and at T180 in RTP10 compared with RTP0 and at all time points except T30 compared with RTP5. Oxygen extraction was lower at T0 in RTP10 compared with RTP0 and RTP5, and at T60 and T180 compared with RTP5. Conclusions and clinical relevance RTP 5° and 10° did not improve ventilatory and oxygenation variables in sevoflurane-anesthetized steers when compared with no tilt, however the cardiovascular variables were adversely affected in RTP10. |
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Cardiopulmonary effects of reverse Trendelenburg position at 5° and 10° in sevoflurane-anesthetized steersbovinedorsal recumbencyhemodynamicminimum alveolar concentrationreverse TrendelenburgsevofluraneObjective To assess the cardiopulmonary effects caused by reverse Trendelenburg position (RTP) at 5° and 10° in sevoflurane-anesthetized yearling steers. Study design Prospective, experimental study. Animals Eight Holstein steers aged (mean ± standard deviation) 12 ± 2 months and weighing 145 ± 26 kg. Methods In the first phase of the study, the individual minimum alveolar concentration (MAC) of sevoflurane was determined using electrical stimulation. In the second phase, the effects of RTP were assessed. The animals were anesthetized on three separate events separated by ≥7 days in an incomplete crossover design: control treatment using a table without tilt (RTP0); treatment with the table at 5° RTP (RTP5) and table tilted 10° RTP (RTP10). Subjects were physically restrained in dorsal recumbency on the table, which was already tilted according to each treatment. Anesthesia was induced with sevoflurane at 8% in 5 L minute–1 oxygen via face mask followed by maintenance with sevoflurane at 1.3 MAC and spontaneous breathing. Cardiopulmonary variables were obtained immediately after instrumentation (T0) and then after 30, 60, 120 and 180 minutes (T30, T60, T120 and T180, respectively). Results The mean sevoflurane MAC for the eight steers was 2.12 ± 0.31%. Cardiac output was lower at all time points and the systemic vascular resistance index was higher at T120 and T180 in RTP10 compared with RTP0. Oxygen consumption was lower at T0 and at T180 in RTP10 compared with RTP0 and at all time points except T30 compared with RTP5. Oxygen extraction was lower at T0 in RTP10 compared with RTP0 and RTP5, and at T60 and T180 compared with RTP5. Conclusions and clinical relevance RTP 5° and 10° did not improve ventilatory and oxygenation variables in sevoflurane-anesthetized steers when compared with no tilt, however the cardiovascular variables were adversely affected in RTP10.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Faculty of Veterinary Medicine and Animal Science Federal University of Mato Grosso do Sul (UFMS)Department of Animal Clinic Surgery and Reproduction Faculty of Veterinary Medicine (UNESP) – São Paulo State UniversityDepartment of Animal Clinic Surgery and Reproduction Faculty of Veterinary Medicine (UNESP) – São Paulo State UniversityFAPESP: 2013/06046-2Universidade Federal de Mato Grosso do Sul (UFMS)Universidade Estadual Paulista (Unesp)Araújo, Marcelo A.Deschk, Maurício [UNESP]Wagatsuma, Juliana T. [UNESP]Floriano, Beatriz P. [UNESP]Siqueira, Carlos E. [UNESP]Oliva, Valéria NLS. [UNESP]Santos, Paulo SP. [UNESP]2018-12-11T16:50:01Z2018-12-11T16:50:01Z2017-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article854-864application/pdfhttp://dx.doi.org/10.1016/j.vaa.2017.03.006Veterinary Anaesthesia and Analgesia, v. 44, n. 4, p. 854-864, 2017.1467-29951467-2987http://hdl.handle.net/11449/17026810.1016/j.vaa.2017.03.0062-s2.0-850311073452-s2.0-85031107345.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengVeterinary Anaesthesia and Analgesia0,8000,800info:eu-repo/semantics/openAccess2023-12-09T06:23:46Zoai:repositorio.unesp.br:11449/170268Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:52:18.908617Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Cardiopulmonary effects of reverse Trendelenburg position at 5° and 10° in sevoflurane-anesthetized steers |
title |
Cardiopulmonary effects of reverse Trendelenburg position at 5° and 10° in sevoflurane-anesthetized steers |
spellingShingle |
Cardiopulmonary effects of reverse Trendelenburg position at 5° and 10° in sevoflurane-anesthetized steers Araújo, Marcelo A. bovine dorsal recumbency hemodynamic minimum alveolar concentration reverse Trendelenburg sevoflurane |
title_short |
Cardiopulmonary effects of reverse Trendelenburg position at 5° and 10° in sevoflurane-anesthetized steers |
title_full |
Cardiopulmonary effects of reverse Trendelenburg position at 5° and 10° in sevoflurane-anesthetized steers |
title_fullStr |
Cardiopulmonary effects of reverse Trendelenburg position at 5° and 10° in sevoflurane-anesthetized steers |
title_full_unstemmed |
Cardiopulmonary effects of reverse Trendelenburg position at 5° and 10° in sevoflurane-anesthetized steers |
title_sort |
Cardiopulmonary effects of reverse Trendelenburg position at 5° and 10° in sevoflurane-anesthetized steers |
author |
Araújo, Marcelo A. |
author_facet |
Araújo, Marcelo A. Deschk, Maurício [UNESP] Wagatsuma, Juliana T. [UNESP] Floriano, Beatriz P. [UNESP] Siqueira, Carlos E. [UNESP] Oliva, Valéria NLS. [UNESP] Santos, Paulo SP. [UNESP] |
author_role |
author |
author2 |
Deschk, Maurício [UNESP] Wagatsuma, Juliana T. [UNESP] Floriano, Beatriz P. [UNESP] Siqueira, Carlos E. [UNESP] Oliva, Valéria NLS. [UNESP] Santos, Paulo SP. [UNESP] |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de Mato Grosso do Sul (UFMS) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Araújo, Marcelo A. Deschk, Maurício [UNESP] Wagatsuma, Juliana T. [UNESP] Floriano, Beatriz P. [UNESP] Siqueira, Carlos E. [UNESP] Oliva, Valéria NLS. [UNESP] Santos, Paulo SP. [UNESP] |
dc.subject.por.fl_str_mv |
bovine dorsal recumbency hemodynamic minimum alveolar concentration reverse Trendelenburg sevoflurane |
topic |
bovine dorsal recumbency hemodynamic minimum alveolar concentration reverse Trendelenburg sevoflurane |
description |
Objective To assess the cardiopulmonary effects caused by reverse Trendelenburg position (RTP) at 5° and 10° in sevoflurane-anesthetized yearling steers. Study design Prospective, experimental study. Animals Eight Holstein steers aged (mean ± standard deviation) 12 ± 2 months and weighing 145 ± 26 kg. Methods In the first phase of the study, the individual minimum alveolar concentration (MAC) of sevoflurane was determined using electrical stimulation. In the second phase, the effects of RTP were assessed. The animals were anesthetized on three separate events separated by ≥7 days in an incomplete crossover design: control treatment using a table without tilt (RTP0); treatment with the table at 5° RTP (RTP5) and table tilted 10° RTP (RTP10). Subjects were physically restrained in dorsal recumbency on the table, which was already tilted according to each treatment. Anesthesia was induced with sevoflurane at 8% in 5 L minute–1 oxygen via face mask followed by maintenance with sevoflurane at 1.3 MAC and spontaneous breathing. Cardiopulmonary variables were obtained immediately after instrumentation (T0) and then after 30, 60, 120 and 180 minutes (T30, T60, T120 and T180, respectively). Results The mean sevoflurane MAC for the eight steers was 2.12 ± 0.31%. Cardiac output was lower at all time points and the systemic vascular resistance index was higher at T120 and T180 in RTP10 compared with RTP0. Oxygen consumption was lower at T0 and at T180 in RTP10 compared with RTP0 and at all time points except T30 compared with RTP5. Oxygen extraction was lower at T0 in RTP10 compared with RTP0 and RTP5, and at T60 and T180 compared with RTP5. Conclusions and clinical relevance RTP 5° and 10° did not improve ventilatory and oxygenation variables in sevoflurane-anesthetized steers when compared with no tilt, however the cardiovascular variables were adversely affected in RTP10. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-07-01 2018-12-11T16:50:01Z 2018-12-11T16:50:01Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.vaa.2017.03.006 Veterinary Anaesthesia and Analgesia, v. 44, n. 4, p. 854-864, 2017. 1467-2995 1467-2987 http://hdl.handle.net/11449/170268 10.1016/j.vaa.2017.03.006 2-s2.0-85031107345 2-s2.0-85031107345.pdf |
url |
http://dx.doi.org/10.1016/j.vaa.2017.03.006 http://hdl.handle.net/11449/170268 |
identifier_str_mv |
Veterinary Anaesthesia and Analgesia, v. 44, n. 4, p. 854-864, 2017. 1467-2995 1467-2987 10.1016/j.vaa.2017.03.006 2-s2.0-85031107345 2-s2.0-85031107345.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Veterinary Anaesthesia and Analgesia 0,800 0,800 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
854-864 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808129133122682880 |