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Herrera-Linares ME, Rico-Pérez B, Yaffy D, Fernández-Parra R, Llanos C, Parra-Martínez C, Herrera-Gutiérrez ME, Sanchis-Mora S. Cadaveric study of the ultrasound-guided erector spinae plane block over the transverse process of the twelfth thoracic vertebra in dogs: Transversal vs longitudinal approach. Vet J 2024; 304:106094. [PMID: 38452849 DOI: 10.1016/j.tvjl.2024.106094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 03/04/2024] [Accepted: 03/04/2024] [Indexed: 03/09/2024]
Abstract
This study describes a transversal (TV) ultrasound-guided erector spinae plane (ESP) block technique over the transverse process of T12. And evaluates the distribution of the dye and affected nerves branches compared to a longitudinal (LNG) approach over the transverse process of T12 in canine cadavers. Secondly, it also compares de anatomy and dimensions of the transverse processes of T12 with T9 and T5. For this double-masked, cadaveric experimental study, 12 adult Beagle cadavers were injected with 0.6 mL/kg of dye/contrast. Spread was evaluated by computed tomography (CT) and dissection. Mean bodyweight was 9.76 (±0.59) kg. The TV and LNG approaches stained a median (range) of four (2-6) and three (1-6) medial branches of the dorsal rami of the spinal nerves, three (2-6) and three (2-5) lateral branches, and one (0-3) and one (0-4) ventral branches, respectively. Dye was detected in the epidural space in 55.6% and 66.7% of cases for the TV and LNG approaches, respectively (P=0.63). And in the ventral paravertebral compartment in 22.2% and lymphatics in 88.8% in both approaches. There were no statistical differences for the spread. The dorsolateral edge of the transverse process (TP) was not visible with CT at T12. The mean (±SD) length of the TP was significantly shorter at T12 [3.34 (±0.22)] mm, compared to T9 [6.08 (±0.47)] mm and T5 [5.93 (±0.62)] mm (P <0.001). This study showed similar distribution whether using a TV or LNG approach and differences in the anatomy and length of the T12 TP.
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Affiliation(s)
- M E Herrera-Linares
- Doctoral School, Catholic University of Valencia San Vicente Mártir, San Agustín Square, 3, 46002, Spain; Department of Clinical Science and Services. The Royal Veterinary College, Hawkshead Ln, Hatfield AL9 7TA, United Kingdom.
| | - B Rico-Pérez
- Department of Clinical Science and Services. The Royal Veterinary College, Hawkshead Ln, Hatfield AL9 7TA, United Kingdom
| | - D Yaffy
- Department of Pathobiology and Population Sciences. The Royal Veterinary College, Hawkshead Ln, Hatfield AL9 7TA, United Kingdom
| | - R Fernández-Parra
- Department of Small Animal Medicine and Surgery, Faculty of Veterinary Medicine and experimental Sciences, Catholic University of Valencia San Vicente Mártir, Valencia, C/ de Quevedo, 2, 46001, Spain
| | - C Llanos
- Department of Clinical Science and Services. The Royal Veterinary College, Hawkshead Ln, Hatfield AL9 7TA, United Kingdom
| | - C Parra-Martínez
- Department of Clinical Science and Services. The Royal Veterinary College, Hawkshead Ln, Hatfield AL9 7TA, United Kingdom
| | - M E Herrera-Gutiérrez
- Department of Intensive Care Medicine. Regional University Hospital of Málaga, Av., 84, Málaga 29010, Spain
| | - S Sanchis-Mora
- Department of Small Animal Medicine and Surgery, Faculty of Veterinary Medicine and experimental Sciences, Catholic University of Valencia San Vicente Mártir, Valencia, C/ de Quevedo, 2, 46001, Spain
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