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Evaluation of an automatic approach device to the epidural space of Beagle dogs

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Authors

Rhee, Suehyung; Son, Won-Gyun; Kim, Dalhae; Shin, Donghwi; Kim, Jiyoung; Sung, Taehoon; Yoon, Sangjin; Lee, Inhyung

Issue Date
2023-07
Publisher
Blackwell Publishing Inc.
Citation
Veterinary Anaesthesia and Analgesia, Vol.50 No.4, pp.372-380
Abstract
Objective: To compare the epidural anesthesia device (EPIA), which facilitates an automatic approach to location of the epidural space, with the performance of clinicians using tactile sensation and differences in pressure when inserting an epidural needle into the epidural space of a dog. Study design: Prospective, crossover experiment. Animals: A total of 14 Beagle dogs weighing 7.5 ± 2.4 kg (mean ± standard deviation). Methods: Each dog was anesthetized three times at 2 week intervals for three anesthesiologists (two experienced, one novice) to perform 14 epidural injections (seven manual and EPIA device each). The sequence of methods was assigned randomly for each anesthesiologist. The dogs were anesthetized with medetomidine (10 μg kg–1), alfaxalone (2 mg kg–1) and isoflurane and positioned in sternal recumbency with the pelvic limbs extended cranially. Epidural puncture in the manual method was determined by pop sensation, hanging drop technique and reduced injection pressure, whereas using the device a sudden decrease in reaction force on the device was detected. A C-arm identified needle placement in the epidural space, and after administration of iohexol (0.3 mL), the needle length in the epidural space was defined as the mean value measured by three radiologists. Normality was tested using the Kolmogorov–Smirnov test, and significant differences between the two methods were analyzed using an independent sample t test. Results: In both methods, the success rates of epidural insertion were the same at 95.2%. The length of the needle in the epidural space using the device and manual methods was 1.59 ± 0.50 and 1.68 ± 0.88 mm, respectively, with no significant difference (p = 0.718). Conclusions and clinical relevance: EPIA device was comparable to human tactile sense for an epidural needle insertion in Beagle dogs. Further research should be conducted for application of the device in clinical environments.
ISSN
1467-2987
URI
https://hdl.handle.net/10371/201077
DOI
https://doi.org/10.1016/j.vaa.2023.04.005
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  • College of Veterinary Medicine
  • Department of Veterinary Medicine
Research Area Pain Medicine, Systematic Anesthesia, Veterinary Anesthesiology, 수의마취통증의학

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