Assessment of an Ultrasound-Guided Rectus Sheath Block in Foals: A Cadaveric Study
In neonatal equines, pathologies involving umbilical structures are an important cause of morbidity, and surgical removal of urachal remnants is a common procedure in clinical practice. Surgery involving the ventral abdominal wall can cause substantial pain, leading to complications and prolonged re...
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MDPI AG
2023-11-01
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| Series: | Animals |
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| Online Access: | https://www.mdpi.com/2076-2615/13/23/3600 |
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| author | Álvaro Jesús Gutiérrez Bautista Franz Josef Söbbeler Rüdiger Koch Jaime Viscasillas Sabine Kästner |
| author_facet | Álvaro Jesús Gutiérrez Bautista Franz Josef Söbbeler Rüdiger Koch Jaime Viscasillas Sabine Kästner |
| author_sort | Álvaro Jesús Gutiérrez Bautista |
| collection | DOAJ |
| description | In neonatal equines, pathologies involving umbilical structures are an important cause of morbidity, and surgical removal of urachal remnants is a common procedure in clinical practice. Surgery involving the ventral abdominal wall can cause substantial pain, leading to complications and prolonged recovery. The objectives of this study were to describe a two-point bilateral ultrasound-guided rectus sheath block at the level of the umbilicus and to evaluate the extent of dye distribution in foal cadavers. Ten foal cadavers were included in the study, in which a bilateral two-point ultrasound-guided rectus sheath block was performed—one injection 5 cm cranially and a second one 5 cm caudally to the umbilicus. The injectate consisted of a mixture of iodinated contrast medium and blue dye at a volume of 0.25 mL kg<sup>−1</sup> per injection point (total 1 mL kg<sup>−1</sup>). After the injection, computer tomography and subsequent dissection of the ventral abdominal wall were performed. The extension of the contrast medium, the number of stained nerves, and contamination of the abdominal cavity were evaluated. The cranio-caudal extension of the contrast ranged from 0.8 to 1.4 cm per milliliter of injectate. The most commonly stained ventral branches of spinal nerves were thoracic (Th) nerves 16, 17, and 18 (95%, 85%, and 80% of the nerves, respectively). Abdominal contamination was found in four animals. The results suggest that the block could provide periumbilical analgesia. Further studies with different volumes of injectate and living animals are warranted. |
| first_indexed | 2024-03-09T01:56:34Z |
| format | Article |
| id | doaj.art-bfe4c41f9b7149c58e403092ae80f03f |
| institution | Directory Open Access Journal |
| issn | 2076-2615 |
| language | English |
| last_indexed | 2024-03-09T01:56:34Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Animals |
| spelling | doaj.art-bfe4c41f9b7149c58e403092ae80f03f2023-12-08T15:10:25ZengMDPI AGAnimals2076-26152023-11-011323360010.3390/ani13233600Assessment of an Ultrasound-Guided Rectus Sheath Block in Foals: A Cadaveric StudyÁlvaro Jesús Gutiérrez Bautista0Franz Josef Söbbeler1Rüdiger Koch2Jaime Viscasillas3Sabine Kästner4Small Animal Clinic, University of Veterinary Medicine Hanover, Foundation, Bünteweg 9, 30559 Hannover, GermanySmall Animal Clinic, University of Veterinary Medicine Hanover, Foundation, Bünteweg 9, 30559 Hannover, GermanyInstitute of Anatomy, University of Veterinary Medicine Hanover, Foundation, Bischofsholer Damm 15, 30173 Hanover, GermanyHospital Veterinario Anicura Valencia Sur, Av. de Picassent, 28, 46460 Valencia, SpainClinic for Horses, University of Veterinary Medicine Hannover, Foundation, Bünteweg 9, 30559 Hannover, GermanyIn neonatal equines, pathologies involving umbilical structures are an important cause of morbidity, and surgical removal of urachal remnants is a common procedure in clinical practice. Surgery involving the ventral abdominal wall can cause substantial pain, leading to complications and prolonged recovery. The objectives of this study were to describe a two-point bilateral ultrasound-guided rectus sheath block at the level of the umbilicus and to evaluate the extent of dye distribution in foal cadavers. Ten foal cadavers were included in the study, in which a bilateral two-point ultrasound-guided rectus sheath block was performed—one injection 5 cm cranially and a second one 5 cm caudally to the umbilicus. The injectate consisted of a mixture of iodinated contrast medium and blue dye at a volume of 0.25 mL kg<sup>−1</sup> per injection point (total 1 mL kg<sup>−1</sup>). After the injection, computer tomography and subsequent dissection of the ventral abdominal wall were performed. The extension of the contrast medium, the number of stained nerves, and contamination of the abdominal cavity were evaluated. The cranio-caudal extension of the contrast ranged from 0.8 to 1.4 cm per milliliter of injectate. The most commonly stained ventral branches of spinal nerves were thoracic (Th) nerves 16, 17, and 18 (95%, 85%, and 80% of the nerves, respectively). Abdominal contamination was found in four animals. The results suggest that the block could provide periumbilical analgesia. Further studies with different volumes of injectate and living animals are warranted.https://www.mdpi.com/2076-2615/13/23/3600rectus sheath blockfoalultrasound-guided regional anaesthesiaspinal nervesumbilical surgery |
| spellingShingle | Álvaro Jesús Gutiérrez Bautista Franz Josef Söbbeler Rüdiger Koch Jaime Viscasillas Sabine Kästner Assessment of an Ultrasound-Guided Rectus Sheath Block in Foals: A Cadaveric Study Animals rectus sheath block foal ultrasound-guided regional anaesthesia spinal nerves umbilical surgery |
| title | Assessment of an Ultrasound-Guided Rectus Sheath Block in Foals: A Cadaveric Study |
| title_full | Assessment of an Ultrasound-Guided Rectus Sheath Block in Foals: A Cadaveric Study |
| title_fullStr | Assessment of an Ultrasound-Guided Rectus Sheath Block in Foals: A Cadaveric Study |
| title_full_unstemmed | Assessment of an Ultrasound-Guided Rectus Sheath Block in Foals: A Cadaveric Study |
| title_short | Assessment of an Ultrasound-Guided Rectus Sheath Block in Foals: A Cadaveric Study |
| title_sort | assessment of an ultrasound guided rectus sheath block in foals a cadaveric study |
| topic | rectus sheath block foal ultrasound-guided regional anaesthesia spinal nerves umbilical surgery |
| url | https://www.mdpi.com/2076-2615/13/23/3600 |
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