Evaluation of a laryngeal mask airway as an alternative to orotracheal intubation for maintaining airway patency during inhalant anesthesia under spontaneous ventilation in capybaras (hydrochoerus hydrochaeris)
| Autor: | Elizabeth Regina Carvalho, Carolina Hagy Girotto, Francisco J. Teixeira-Neto, Mariana Werneck Fonseca, Natache A. Garofalo, André Augusto Justo |
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| Přispěvatelé: | Universidade Estadual Paulista (Unesp), Universidade de São Paulo (USP) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| Popis: | Made available in DSpace on 2021-06-25T10:27:33Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-03-01 Abstract: Orotracheal intubation carries greater difficulty in rodents than in most domestic species. The human laryngeal mask airway (LMA) was compared with an endotracheal tube (ETtube) for maintaining airway patency in anesthetized capybaras (Hydrochoerus hydrochaeris). Six capybaras (24-52 kg) were remotely darted with intramuscular ketamine, midazolam, and acepromazine on two occasions (≥7-day intervals). After isoflurane mask induction for random placement of an ETtube or a LMA during each episode, anesthesia was maintained with isoflurane in oxygen under spontaneous ventilation for 90-120 min. Computed tomography of the pharynx and larynx was performed in two of six animals and three of six animals with the ETtube and LMA, respectively. End-Tidal isoflurane [median (range)] was not significantly different between ETtube [0.6% (0.5-1.5%)] and LMA [0.6% (0.4-0.9%)]. Heart rate [67 ± 11 beats/min (ETtube) and 67 ± 18 beats/min (LMA)], mean arterial pressure [74 ± 13 mm Hg (ETtube) and 74 ± 14 mm Hg (LMA)], arterial CO2 tension [41 ± 2 mm Hg (ETtube) and 43 ± 4 mm Hg (LMA)], and arterial O2 tension [360 ± 59 mm Hg (ETtube) and 360 ± 63 mm Hg (LMA)] were not significantly different between treatment groups. Computed tomography showed gas in the esophagus with the LMA (three of three animals); the fit of the LMA to the larynx was adequate in two of three animals and fair in one of three animals. Recovery from anesthesia was uneventful. The LMA is a feasible alternative to the ETtube for maintaining airway patency during inhalant anesthesia in spontaneously breathing capybaras. However, the LMA may be dislodged during movement of the animal. Universidade Estadual Paulista (Unesp) Faculdade de Medicina Campus de Botucatu Cep 18618-687 Universidade Estadual Paulista (Unesp) Faculdade de Medicina Veterina Ria e Zootecnia Campus de Botucatu Cep 18618-681 Universidade de Sa O Paulo (USP) Faculdade de Medicina Veterina Ria e Zootecnia Cep 05508-270 Universidade Estadual Paulista (Unesp) Faculdade de Cieˆncias Agra Rias e Veterina Rias Campus de Jaboticabal Cep 14884-900 Universidade Estadual Paulista (Unesp) Faculdade de Medicina Campus de Botucatu Cep 18618-687 Universidade Estadual Paulista (Unesp) Faculdade de Medicina Veterina Ria e Zootecnia Campus de Botucatu Cep 18618-681 Universidade Estadual Paulista (Unesp) Faculdade de Cieˆncias Agra Rias e Veterina Rias Campus de Jaboticabal Cep 14884-900 |
| Databáze: | OpenAIRE |
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