Julianne E. McCready , Alison A. Smith , Pratyaydipta Rudra , Brynn McCleery
{"title":"将阿法沙酮作为一种镇静剂用于伴侣大鼠胸部 X 射线定位的评估","authors":"Julianne E. McCready , Alison A. Smith , Pratyaydipta Rudra , Brynn McCleery","doi":"10.1053/j.jepm.2024.01.009","DOIUrl":null,"url":null,"abstract":"<div><h3>Background</h3><p>Alfaxalone is used in laboratory and companion rodents for sedation and anesthesia. The purpose of this study was to determine if 5 mg/kg alfaxalone administered intramuscularly provides safe and effective sedation for radiography in client-owned rats.</p></div><div><h3>Methods</h3><p>Eleven rats were recruited. Heart rate, respiratory rate, and rectal temperature were measured prior to and during sedation. Reflexes (forelimb withdrawal, hind limb withdrawal, tail pinch, ear flick) were evaluated. Induction, sedation, and recovery quality were scored. Sedation depth was scored by 3 different observers based on video recordings. Ten minutes post-injection, thoracic radiographs were obtained.</p></div><div><h3>Results</h3><p>Nine rats were healthy, while two had mild respiratory signs. The mean (95% confidence interval [CI]) time to first effect was 3 (95%CI 1.3–4.7) minutes. Duration of sedation was 21.6 (95%CI 17.3–25.8) minutes. Vitals remained within clinically acceptable limits. Mild, self-limiting tremoring was noted in 3/11 rats. Reflexes tended to be preserved but were occasionally decreased or absent in some rats. Induction and recovery quality were very smooth in most rats. Radiographs were able to be performed in all rats. The time from radiographs to recovery was 4.7 (95%CI 1.4–8.1) minutes.</p></div><div><h3>Conclusions and clinical relevance</h3><p>Alfaxalone had rapid onset and recovery. It was effective for radiographic positioning, but an additional sedative could be considered in healthy rats to provide greater sedation depth and duration. The protocol appeared safe in a very small sample size of clinically ill rats, but further research is needed to confirm safety.</p></div>","PeriodicalId":15801,"journal":{"name":"Journal of Exotic Pet Medicine","volume":null,"pages":null},"PeriodicalIF":0.5000,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Evaluation of intramuscular alfaxalone as a sedative for thoracic radiographic positioning in companion rats (Rattus norvegicus)\",\"authors\":\"Julianne E. McCready , Alison A. Smith , Pratyaydipta Rudra , Brynn McCleery\",\"doi\":\"10.1053/j.jepm.2024.01.009\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Background</h3><p>Alfaxalone is used in laboratory and companion rodents for sedation and anesthesia. The purpose of this study was to determine if 5 mg/kg alfaxalone administered intramuscularly provides safe and effective sedation for radiography in client-owned rats.</p></div><div><h3>Methods</h3><p>Eleven rats were recruited. Heart rate, respiratory rate, and rectal temperature were measured prior to and during sedation. Reflexes (forelimb withdrawal, hind limb withdrawal, tail pinch, ear flick) were evaluated. Induction, sedation, and recovery quality were scored. Sedation depth was scored by 3 different observers based on video recordings. Ten minutes post-injection, thoracic radiographs were obtained.</p></div><div><h3>Results</h3><p>Nine rats were healthy, while two had mild respiratory signs. The mean (95% confidence interval [CI]) time to first effect was 3 (95%CI 1.3–4.7) minutes. Duration of sedation was 21.6 (95%CI 17.3–25.8) minutes. Vitals remained within clinically acceptable limits. Mild, self-limiting tremoring was noted in 3/11 rats. Reflexes tended to be preserved but were occasionally decreased or absent in some rats. Induction and recovery quality were very smooth in most rats. Radiographs were able to be performed in all rats. The time from radiographs to recovery was 4.7 (95%CI 1.4–8.1) minutes.</p></div><div><h3>Conclusions and clinical relevance</h3><p>Alfaxalone had rapid onset and recovery. It was effective for radiographic positioning, but an additional sedative could be considered in healthy rats to provide greater sedation depth and duration. The protocol appeared safe in a very small sample size of clinically ill rats, but further research is needed to confirm safety.</p></div>\",\"PeriodicalId\":15801,\"journal\":{\"name\":\"Journal of Exotic Pet Medicine\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.5000,\"publicationDate\":\"2024-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Exotic Pet Medicine\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1557506324000077\",\"RegionNum\":4,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"VETERINARY SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Exotic Pet Medicine","FirstCategoryId":"97","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1557506324000077","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"VETERINARY SCIENCES","Score":null,"Total":0}
Evaluation of intramuscular alfaxalone as a sedative for thoracic radiographic positioning in companion rats (Rattus norvegicus)
Background
Alfaxalone is used in laboratory and companion rodents for sedation and anesthesia. The purpose of this study was to determine if 5 mg/kg alfaxalone administered intramuscularly provides safe and effective sedation for radiography in client-owned rats.
Methods
Eleven rats were recruited. Heart rate, respiratory rate, and rectal temperature were measured prior to and during sedation. Reflexes (forelimb withdrawal, hind limb withdrawal, tail pinch, ear flick) were evaluated. Induction, sedation, and recovery quality were scored. Sedation depth was scored by 3 different observers based on video recordings. Ten minutes post-injection, thoracic radiographs were obtained.
Results
Nine rats were healthy, while two had mild respiratory signs. The mean (95% confidence interval [CI]) time to first effect was 3 (95%CI 1.3–4.7) minutes. Duration of sedation was 21.6 (95%CI 17.3–25.8) minutes. Vitals remained within clinically acceptable limits. Mild, self-limiting tremoring was noted in 3/11 rats. Reflexes tended to be preserved but were occasionally decreased or absent in some rats. Induction and recovery quality were very smooth in most rats. Radiographs were able to be performed in all rats. The time from radiographs to recovery was 4.7 (95%CI 1.4–8.1) minutes.
Conclusions and clinical relevance
Alfaxalone had rapid onset and recovery. It was effective for radiographic positioning, but an additional sedative could be considered in healthy rats to provide greater sedation depth and duration. The protocol appeared safe in a very small sample size of clinically ill rats, but further research is needed to confirm safety.
期刊介绍：
The Journal of Exotic Pet Medicine provides clinicians with a convenient, comprehensive, "must have" resource to enhance and elevate their expertise with exotic pet medicine. Each issue contains wide ranging peer-reviewed articles that cover many of the current and novel topics important to clinicians caring for exotic pets. Diagnostic challenges, consensus articles and selected review articles are also included to help keep veterinarians up to date on issues affecting their practice. In addition, the Journal of Exotic Pet Medicine serves as the official publication of both the Association of Exotic Mammal Veterinarians (AEMV) and the European Association of Avian Veterinarians (EAAV). The Journal of Exotic Pet Medicine is the most complete resource for practitioners who treat exotic pets.
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