Effects of sevoflurane anesthesia on righting reflex and hemolymph gas analysis variables for Chilean rose tarantulas (Grammostola rosea)

Zachariah, Trevor T.; Mitchell, Mark A.; Watson, Megan K.; Clark‐Price, Stuart C.; McMichael, Maureen

doi:10.2460/ajvr.75.6.521

Cited by 19 publications

(3 citation statements)

References 39 publications

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“…Inhalant anesthetics such as isoflurane and sevoflurane are used clinically for the anesthesia of terrestrial invertebrates [ 33 , 34 , 35 ]. It was reported that isoflurane was used for anesthesia by two respondents and for euthanasia by one respondent.…”

Section: Discussionmentioning

confidence: 99%

Characterization of Current Husbandry and Veterinary Care Practices of the Giant Pacific Octopus (Enteroctopus dofleini) Using an Online Survey

Kirby

Balko

Goertz

et al. 2023

Veterinary Sciences

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Giant Pacific octopuses (Enteroctopus dofleini) (GPOs) are commonly housed in zoos or aquaria, and sedation, anesthesia, and/or euthanasia may be indicated for a variety of reasons. Despite this need, evidence-based data on best practices is limited and focuses on smaller or more tropical species. The objectives of this study were to survey the aquatic community regarding the husbandry and veterinary care of GPOs, with a specific focus on anesthetic and euthanasia protocols. A two-part web-based survey was distributed to four aquatic and/or veterinary email listservs. Individuals from fifty-two institutions participated in phase one. Results documented that 40 (78 percent) participating institutions currently house GPOs, with most housing one and nine institutions housing two to three GPOs. The median (range) habitat volume is 5405 (1893–16,465) L, and 78 percent of systems are closed. Of the institutions surveyed, 23 have anesthetized or sedated a GPO for nonterminal procedures, including wound care, biopsies, and hemolymph collection. Reported methods of sedation or anesthesia include magnesium chloride, ethanol, isoflurane, tricaine methanesulfonate (MS-222), magnesium sulfate, benzocaine, and dexmedetomidine. Drugs or methods used for euthanasia include magnesium chloride, ethanol, mechanical decerebration, pentobarbital, isoflurane, MS-222, magnesium sulfate, benzocaine, potassium chloride, dexmedetomidine, and freezing. Reported observed side effects include ineffectiveness or inadequate sedation, inking, prolonged drug effects, and behavior changes. Survey data have the potential to guide the husbandry and veterinary care of GPOs and build the framework for future prospective studies on GPO sedation and anesthesia.

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Section: Discussionmentioning

confidence: 99%

Characterization of Current Husbandry and Veterinary Care Practices of the Giant Pacific Octopus (Enteroctopus dofleini) Using an Online Survey

Kirby

Balko

Goertz

et al. 2023

Veterinary Sciences

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“…In terms of anaesthetics, I primarily use inhalable anaesthetics (isoflurane or sevoflurane impregnated cotton wool) and place the spider into a negative air pressure space (such as an isolator or enclosed fume cupboard); you can modify the concentration of gas by differing the distance of the cotton wool. These are both effective and safe in many theraphosid species (Dombrowski and others 2013, Zachariah and others 2014, MacMillan and others 2017). An induction chamber can be used to induce anaesthesia, but the ability to maintain anaesthesia is more challenging (especially when considering the exposure risks).…”

Section: History and Clinical Examinationmentioning

confidence: 99%

Theraphosid medicine: what to do when something is peculiar with the tarantula

Kennedy

2023

In Practice

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Background: With over 1060 species reported and a considerable number of these kept in captivity, theraphosid spiders, also known as tarantulas, have become a significant part of private and zoological collections, hence necessitating a greater demand for veterinary expertise.Aim of the article: This comprehensive review addresses the unique challenges in tarantula care. It delves into the application of diagnostic tools like histology, radiography, haematology and microbiology in tarantulas, and discusses how to gather clinically relevant data for effective treatment planning of common conditions. It also outlines adaptations to cater treatments to tarantulas' unique anatomy, and offers guidance on drug selection and veterinary procedures, as well as covering humane euthanasia methods.

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“…For evaluation of anaesthetic effect, loss of the righting reflex is a commonly used anaesthetic end point in studies using laboratory or exotic animals for assessment and comparison of potency of various anaesthetic agents ( Joo and others 2001 , Heaton-Jones and others 2002 , Diaz-Gil and others 2015 , Zachariah and others 2014 ). This is performed by manually placing the animal in dorsal recumbency and then observing for the animal to spontaneously return to sternal recumbency.…”

Section: Introductionmentioning

confidence: 99%

Isoflurane, sevoflurane and desflurane use in cane toads (Rhinella marina)

Morrison

Strahl-Heldreth

Clark‐Price

2016

Veterinary Record Open

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Anaesthetic chamber concentrations of isoflurane, sevoflurane and desflurane that resulted in loss of righting reflex within 15 minutes in 50 per cent of toads (Rhinella marina) exposed (ED50-LRR<15MIN) were identified. The median and range ED50-LRR<15MIN was 1.4 (0.9–1.4) per cent for isoflurane, 1.75 (1.1–1.9) per cent for sevoflurane and 4.4 (4.3–5.5) per cent for desflurane. Subsequently, toads were exposed to 1.5 times the ED50-LRR<15MIN and times to loss and return of righting reflex were identified. All toads for all anaesthetics lost righting reflex. The median and range loss of righting reflex was 4:00 (3:00–5:30) minutes for isoflurane, 4:45 (3:30–7:00) minutes for sevoflurane, and 4:15 (4:00–5:30) minutes for desflurane and was not different between anaesthetics. Time to return of righting reflex was 175 (123–211) minutes for isoflurane, 192 (116–383) minutes for sevoflurane and 74 (52–220) minutes for desflurane. Time to return of righting reflex was significantly shorter for desflurane compared with isoflurane or sevoflurane. The use of isoflurane, sevoflurane or desflurane can be used to provide immobilisation to cane toads and potentially other anurans. Induction times are likely similar when using an anaesthetic chamber to provide anaesthesia. However recovery time may take twice as long when utilising isoflurane or sevoflurane over desflurane.

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Effects of sevoflurane anesthesia on righting reflex and hemolymph gas analysis variables for Chilean rose tarantulas (Grammostola rosea)

Cited by 19 publications

References 39 publications

Characterization of Current Husbandry and Veterinary Care Practices of the Giant Pacific Octopus (Enteroctopus dofleini) Using an Online Survey

Characterization of Current Husbandry and Veterinary Care Practices of the Giant Pacific Octopus (Enteroctopus dofleini) Using an Online Survey

Theraphosid medicine: what to do when something is peculiar with the tarantula

Isoflurane, sevoflurane and desflurane use in cane toads (Rhinella marina)

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