Description of a novel ultrasound guided peribulbar block in horses: a cadaveric study.

Autor:	Leigh H; The Royal (Dick) School of Veterinary Studies and The Roslin Institute, Easter Bush Campus, The University of Edinburgh, Bush Farm, Roslin. EH25 9RG, Scotland, UK. Hannah.leigh@ed.ac.uk., Gozalo-Marcilla M; The Royal (Dick) School of Veterinary Studies and The Roslin Institute, Easter Bush Campus, The University of Edinburgh, Bush Farm, Roslin. EH25 9RG, Scotland, UK., Esteve V; Departamento de Medicina y Cirugía Animal, Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities, Valencia 46115, Spain., Gutiérrez Bautista ÁJ; Clinic for Small Animals, University of Veterinary Medicine, Hannover 305559, Germany., Martin Gimenez T; Departamento de Medicina y Cirugía Animal, Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities, Valencia 46115, Spain., Viscasillas J; Departamento de Medicina y Cirugía Animal, Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities, Valencia 46115, Spain.
Jazyk:	angličtina
Zdroj:	Journal of veterinary science [J Vet Sci] 2021 Mar; Vol. 22 (2), pp. e22.
DOI:	10.4142/jvs.2021.22.e22
Abstrakt:	Background: Standing surgery in horses combining intravenous sedatives, analgesics and local anaesthesia is becoming more popular. Ultrasound guided (USG) peribulbar nerve block (PB) has been described in dogs and humans for facial and ocular surgery, reducing the risk of complications versus retrobulbar nerve block (RB). Objective: To describe a technique for USG PB in horse cadavers. Methods: Landmarks and PB technique were described in two equine cadaver heads ( Phase 1 ), with computed tomography (CT) imaging confirming contrast location and spread. In Phase 2 , ten equine cadaver heads were randomised to two operators naïve to the USG PB, with moderate experience with ultrasonography and conventional "blind" RB. Both techniques were demonstrated once. Subsequently, operators performed five USG PB and five RB each, unassisted. Contrast location and spread were evaluated by CT. Injection site success was defined for USG PB as extraconal contrast, and for RB intraconal contrast. Results: Success was 10/10 for USG PB and 0/10 for RB ( p < 0.001). Of the RB injections, eight resulted in extraconal contrast and two in the masseter muscle ( p = 0.47). Conclusions: The USG PB had a high injection site success rate compared with the RB technique; however, we cannot comment on clinical effect. The USG technique was easily learnt, and no potential complications were seen. The USG PB nerve block could have a wide application for use in horses for ocular surgeries (enucleations, eyelid, corneal, cataract surgeries, and ocular analgesia) due to reduced risk of iatrogenic damage. Further clinical studies are needed. Competing Interests: The authors declare no conflicts of interest. (© 2021 The Korean Society of Veterinary Science.)
Databáze:	MEDLINE
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