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Mead SA, Allen MJ, Elsayed SAH, Gittel CS. Evaluating the Efficacy of a Peripheral Nerve Simulator-Guided Brachial Plexus Block in Rabbits Undergoing Orthopaedic Surgery Compared to Systemic Analgesia. Vet Sci 2024; 11:213. [PMID: 38787185 PMCID: PMC11125770 DOI: 10.3390/vetsci11050213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 03/24/2024] [Accepted: 05/12/2024] [Indexed: 05/25/2024] Open
Abstract
Locoregional anaesthetic techniques are invaluable for providing multimodal analgesia for painful surgical procedures. This prospective, randomised study describes a nerve stimulator-guided brachial plexus blockade (BPB) in rabbits undergoing orthopaedic surgery in comparison to systemic lidocaine. Premedication was provided with intramuscular (IM) medetomidine, fentanyl, and midazolam. Anaesthesia was induced (propofol IV) and maintained with isoflurane. Nine rabbits received a lidocaine BPB (2%; 0.3 mL kg-1), and eight received a lidocaine constant rate infusion (CRI) (2 mg kg-1 IV, followed by 100 µg kg-1 min-1). Rescue analgesia was provided with fentanyl IV. Carprofen was administered at the end of the surgery. Postoperative pain was determined using the Rabbit Grimace Scale (RGS) and a composite pain scale. Buprenorphine was administered according to the pain score for two hours after extubation. Rabbits were filmed during the first two hours to measure distance travelled and behaviours. Food intake and faeces output were compared. Every rabbit in CRI required intraoperative rescue analgesia compared to none in BPB. However, rabbits in both groups had similar pain scores, and there was no difference in the administration of postoperative analgesia. There were no significant differences in food intake or faeces production over 18 h, and no significant differences in distance travelled or behaviours examined during the first two hours. BPB seems superior for intraoperative analgesia. Postoperatively, both groups were comparable.
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Affiliation(s)
- Sophie A. Mead
- Queen’s Veterinary School Hospital, University of Cambridge, Cambridge CB3 0ES, UK;
- Southfields Veterinary Specialists, Basildon SS14 3AP, UK
| | - Matthew J. Allen
- Surgical Discovery Centre, University of Cambridge, Cambridge CB3 0ES, UK
| | - Sara Ahmed Hassouna Elsayed
- Faculty of Veterinary Medicine, Alexandria University, Alexandria 5424041, Egypt
- Department of Veterinary Medicine, University of Cambridge, Cambridge CB3 0ES, UK
| | - Claudia S. Gittel
- Queen’s Veterinary School Hospital, University of Cambridge, Cambridge CB3 0ES, UK;
- Rossdales Equine Hospital, Cotton End Rd, Newmarket CB8 7NN, UK
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Monge E, Donnelly TM, Coutant T, Bennett RA, Pignon C. Lateral ear canal resection and bulla osteotomy with marsupialization to treat otitis media in rabbits: forty-eight procedures. Vet Surg 2023; 52:1100-1111. [PMID: 37635342 DOI: 10.1111/vsu.14017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 07/06/2023] [Accepted: 07/31/2023] [Indexed: 08/29/2023]
Abstract
OBJECTIVE Describe lateral ear canal resection and bulla osteotomy with marsupialization (LECARBOM) in rabbits with otitis media (OM), and report outcomes, complications, bacteria cultured from middle ears, and their antimicrobial susceptibility testing (AST) results. STUDY DESIGN Retrospective clinical case series; single referral hospital. ANIMALS Forty-two rabbits with naturally occurring OM. METHODS Medical records (2011-2021) of rabbits with CT-confirmed OM undergoing surgery were reviewed for outcomes, complications, bacteria cultured from middle ears, and AST. RESULTS Surgery was performed on 48 ears, and outcomes determined 21 days postoperatively. All rabbits survived the procedure. Otitis externa resolved in all lop-eared rabbits. Of 29 ears with OM-associated head tilt, eight (28%) resolved, nine (31%) improved, seven (24%) remained unchanged and five (17%) worsened. Outcome was not associated with head tilt duration nor OM severity. Postoperative complications occurred in 12 (25%) cases, seven of which had wound margin dehiscence that healed by 21 days. The most frequent bacteria isolated were Pasteurella multocida (16%), Bordetella bronchiseptica (14%) and Staphylococcus aureus (14%). Bacteria were sensitive to azithromycin, marbofloxacin or enrofloxacin and resistant to penicillin. CONCLUSION LECARBOM is a well-tolerated surgical procedure to treat OM. It also improved or stabilized 83% of cases with head tilt and resolved all cases with otitis externa. CLINICAL SIGNIFICANCE LECARBOM with administration of an AST-sensitive antibiotic, or azithromycin when no AST is performed, should be effective in rabbits with OM. Postsurgically, it resolves or alleviates most secondary conditions such as otitis externa, head tilt and facial nerve paralysis.
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Affiliation(s)
- Emma Monge
- Exotics Medicine Service, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
- Zoological Medicine Service, Ecole Nationale Vétérinaire de Toulouse, Toulouse, France
| | - Thomas M Donnelly
- Exotics Medicine Service, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
| | - Thomas Coutant
- Exotics Medicine Service, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
| | | | - Charly Pignon
- Exotics Medicine Service, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
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Ozawa S, Cenani A, Sanchez-Migallon Guzman Lv D. Treatment of Pain in Rabbits. Vet Clin North Am Exot Anim Pract 2023; 26:201-227. [PMID: 36402482 DOI: 10.1016/j.cvex.2022.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Rabbits occupy facets of veterinary medicine spanning from companion mammals, wildlife medicine, zoologic species, and research models. Therefore, analgesia is required for a variety of conditions in rabbits and is a critical component of patient care. Considerations when selecting an analgesic protocol in rabbits include timing of administration, route of administration, degree or anticipated pain, ability to access or use controlled drugs, systemic health, and any potential side effects. This review focuses on pharmacologic and locoregional management of pain in rabbits and emphasizes the need for further studies on pain management in this species.
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Affiliation(s)
- Sarah Ozawa
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, 1060 Williams Moore Dr, Raleigh, NC 27606, USA.
| | - Alessia Cenani
- Department of Surgical and Radiographical Sciences, School of Veterinary Medicine University of California Davis, One Shields Avenue, Davis, CA 95616, USA
| | - David Sanchez-Migallon Guzman Lv
- Department of Medicine and Epidemiology, School of Veterinary Medicine University of California Davis, One Shields Avenue, Davis, CA 95616, USA
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Hsi ZY, Theil JH, Ma BW, Oates RS. Effects of Buprenorphine and Carprofen on Appetite in New Zealand White Rabbits ( Oryctolagus cuniculus). JOURNAL OF THE AMERICAN ASSOCIATION FOR LABORATORY ANIMAL SCIENCE : JAALAS 2022; 61:672-677. [PMID: 36270749 PMCID: PMC9732778 DOI: 10.30802/aalas-jaalas-22-000057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Rabbits are especially susceptible to adverse effects related to surgery, which can lead to inappetence and gastrointestinal (GI) stasis. However, these adverse effects may be related to discomfort from the procedure, anesthesia, the analgesics used, and the stress of restraint for analgesic administration. Opioid and NSAID analgesics which are frequently used in rabbits, can contribute to these adverse effects. This study compared the clinical GI side effects of buprenorphine and carprofen to saline controls in New Zealand White rabbits after a nonsurgical anesthetic event. Nine rabbits (3 females and 6 males, aged 8 to 20 mo) were randomly rotated through 5 treatment groups with a 7-d washout period between treatments: anesthesia control (no treatment), buprenorphine (0.05 mg/kg SC every 12 h for 72 h), carprofen (5 mg/kg SC every 24 h for 72 h), twice daily saline control (equivalent volume to buprenorphine SC every 12 h for 72 h), and once daily saline control (equivalent volume to carprofen SC every 24 h for 72 h). All rabbits were anesthetized 5 times and received initial treatments on the day of anesthesia. Generalized linear mixed models were used to assess food intake, water intake, and fecal output score for 7 days after anesthesia. Analysis showed that buprenorphine-treated rabbits had a significant 4-d decrease in food intake and a 3-d decrease in fecal output score compared with baseline. None of the other treatment groups showed any changes in food intake or fecal output score compared with baseline. These findings demonstrate that in the absence of pain, buprenorphine significantly depresses food intake in rabbits and that restraint and injections have minimal effect on food intake despite the possibility of increased stress.
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Affiliation(s)
- Zoe Y Hsi
- School of Veterinary Medicine, University of California, Davis, Davis, California,,Campus Veterinary Services, University of California, Davis, Davis, California,Corresponding author.
| | - Jacob H Theil
- Campus Veterinary Services, University of California, Davis, Davis, California
| | - Betty W Ma
- Campus Veterinary Services, University of California, Davis, Davis, California
| | - Rhonda S Oates
- School of Veterinary Medicine, University of California, Davis, Davis, California,,Campus Veterinary Services, University of California, Davis, Davis, California
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Ryan AC, Dutton TAG, Gurney MA. Peribulbar block in a rabbit presenting for enucleation. VETERINARY RECORD CASE REPORTS 2022. [DOI: 10.1002/vrc2.359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Effects of a Single Opioid Dose on Gastrointestinal Motility in Rabbits ( Oryctolagus cuniculus): Comparisons among Morphine, Butorphanol, and Tramadol. Vet Sci 2022; 9:vetsci9010028. [PMID: 35051113 PMCID: PMC8780335 DOI: 10.3390/vetsci9010028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 01/11/2022] [Accepted: 01/12/2022] [Indexed: 02/01/2023] Open
Abstract
The aim of this study was to evaluate and compare the effects of single doses of butorphanol, morphine, and tramadol on gastrointestinal motility in rabbits (Oryctolagus cuniculus) using non-invasive imaging methods, such as radiographic barium follow through and ultrasonographic contraction counts. Time-lapse radiographic and ultrasound examinations were performed before and after a single intramuscular dose of 5 mg kg−1 butorphanol, 10 mg kg−1 morphine, or 10 mg kg−1 tramadol. Pyloric and duodenal contraction counts by ultrasonography and radiographic repletion scores for the stomach and caecum were analysed using a mixed linear model. No significant effect was noted on ultrasound examinations of pyloric and duodenal contractions after administration of an opioid treatment. Morphine had a significant effect on the stomach and the caecum repletion scores, whereas butorphanol had a significant effect only on the caecum repletion score. Tramadol had no significant effect on the stomach or caecum repletion scores. The present findings suggest that a single dose of 5 mg kg−1 butorphanol or 10 mg kg−1 morphine temporarily slows gastrointestinal transit in healthy rabbits, preventing physiological progression of the alimentary bolus without the induction of ileus. In contrast, a single dose of 10 mg kg−1 tramadol has no such effects.
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Ozawa S, Thomson A, Petritz O. Safety and efficacy of oral mirtazapine in New Zealand White rabbits (Oryctolagus cuniculus). J Exot Pet Med 2022. [DOI: 10.1053/j.jepm.2021.10.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Abstract
With the increasing frequency of rabbits as veterinary patients, the expectation for high-quality, intensive veterinary care, and resultantly an understanding of anesthesia has been increasing. Sedation and general anesthesia are commonly required for many routine and emergency procedures in rabbits, and this results in the need for a strong awareness of anesthetic principles, knowledge of limitations of anesthesia, and maintenance of high standards of anesthesia.
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Abstract
Orthopedic disorders are a common clinical presentation for the exotic clinician. Before treating the fracture it is vital to stabilize the patient. Small exotic mammals are characterized by relatively thinner bones, adding to the difficulty the small size already represents. A combination of conservative and surgical treatment options are available. The principles of orthopedic surgery and ideas behind the treatment options remain the same as for small mammals, but not all techniques can be directly extrapolated. Historically, the tie-in fixator has been the preferred surgical choice whenever feasible, but further development in bone plates represents a promising advancement.
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Affiliation(s)
- Yasutsugu Miwa
- Miwa Exotic Animal Hospital, 1-25-5 Komagome, Toshima-ku, Tokyo 170-0003A, Japan; Laboratories of Veterinary Surgery, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Daniel Calvo Carrasco
- Great Western Exotics, Vets Now Swindon, Swindon, UK; Wildfowl & Wetlands Trust (WWT), Newgrounds Ln, Gloucestershire, England, Gloucester GL2 7BT, United Kingdom.
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Deflers H, Gandar F, Etienne AL, Marlier D. Successful Medical Management of a Bezoar in a Peruvian Guinea Pig (Cavia Porcellus). J Exot Pet Med 2019. [DOI: 10.1053/j.jepm.2018.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Benato L, Rooney NJ, Murrell JC. Pain and analgesia in pet rabbits within the veterinary environment: a review. Vet Anaesth Analg 2018; 46:151-162. [PMID: 30737017 DOI: 10.1016/j.vaa.2018.10.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 09/11/2018] [Accepted: 10/24/2018] [Indexed: 10/27/2022]
Abstract
OBJECTIVE To provide an overview of pain and analgesia in rabbits with the aim of developing a more accurate understanding of these topics. To illustrate and discuss the areas that have advanced in recent years and those that still require further research. DATABASES USED Three key subject resources were used: Web of Science, Medline and CAB Abstracts. Search terms were rabbits, lagomorphs, laboratory animals, pet, pain, surgical procedures, ovariohysterectomy, orchiectomy, castration, analgesia, opioids, and non-steroidal anti-inflammatory drugs. References from books and articles relevant to the topics were also included. CONCLUSIONS Rabbit medicine has improved over the last 20 years, but the literature suggests that pain management in this species is still inadequate and veterinary professionals believe their knowledge of pain and analgesia in this species is limited. Assessment and quantification of pain in rabbits can be challenging in a clinical environment not only because, as a prey species, rabbits tend to hide signs of pain but also because there are no validated methods to assess pain, except the Rabbit Grimace Scale, which is based on only one rabbit breed. Current consensus is that perioperative multimodal analgesia is the best practice. However, it is not widely used in rabbits. In rabbits, analgesia protocols and dosages reported in the literature are often poorly researched and do not result in complete pain amelioration with the return of normal. The present literature on rabbit pain and analgesia presents gaps either due to unexplored areas or insufficient findings. Further research should focus on these areas with the aim of improving the welfare of rabbits within a veterinary clinic.
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Affiliation(s)
- Livia Benato
- Animal Welfare and Behaviour, School of Veterinary Sciences, University of Bristol, Langford, UK.
| | - Nicola J Rooney
- Animal Welfare and Behaviour, School of Veterinary Sciences, University of Bristol, Langford, UK
| | - Jo C Murrell
- School of Veterinary Sciences, University of Bristol, Langford, UK
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