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Veterinary surgery : VS2020; 49(5); 1007-1014; doi: 10.1111/vsu.13452

Effectiveness of a paraverterbral nerve block versus local portal blocks for laparoscopic closure of the nephrosplenic space: A pilot study.

Abstract: To compare the effectiveness of a paravertebral nerve block vs local portal blocks for laparoscopic closure of the nephrosplenic space in standing sedated research horses. Methods: Randomized clinical trial. Methods: Twelve horses were randomly allocated to two groups (n = 6 per group), paravertebral block of nerves T , L , and L or local blocks of the three laparoscopic portals. Methods: Horses were sedated with dexmedetomidine (4 μg/kg IV and constant rate infusion [CRI] of 2.5 μg/kg/h) and morphine (50 μg/kg IV and CRI of 30 μg/kg/h). According to group allocation, 20 mL of either lidocaine or saline was injected into each paravertebral nerve site or into each local portal site to facilitate laparoscopy for closure of the nephrosplenic space. The overall quality of sedation, analgesia, behavior exhibited during surgery, and ease to perform the surgery were blindly scored by using a visual analog scale (VAS). Results: Time to complete local anesthesia was similar for both blocks, and there was no difference in VAS scores between groups. Total duration of surgery was also similar between the paravertebral (79 ± 16 min) and local portal blocks (85 ± 25 min) groups. Conclusions: The paravertebral nerve block and the local portal blocks provided similar conditions during surgery and can be used interchangeably for closure of the nephrosplenic space. Conclusions: The paravertebral nerve block can be readily performed and may be useful in surgical procedures.
© 2020 The American College of Veterinary Surgeons.
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Publication Date: 2020-05-28 PubMed ID: 32463519DOI: 10.1111/vsu.13452Google Scholar: Lookup
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  • Journal Article
  • Randomized Controlled Trial
  • Veterinary

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

The research compared the effectiveness and implications of using a paravertebral nerve block versus local portal blocks for laparoscopic closure of the nephrosplenic space in horses. The study concluded that both methods provided similar conditions during surgery and can be used interchangeably for this procedure.

Methodology and Procedures

The study was conducted as a randomized clinical trial involving twelve horses. These were divided randomly into the two study groups:

  • Group one received a paravertebral block of nerve T , L , and L.
  • Group two received local blocks of the three laparoscopic portals.

During the procedure, horses were sedated using dexmedetomidine and morphine. Depending on the group they were in, each horse was injected with either lidocaine or saline into each paravertebral nerve site or into each local portal site to aid in the laparoscopic closure of the nephrosplenic space.

Assessment and Scoring

The overall quality of sedation, analgesia, behavior and ease to carry out the surgery were evaluated and scored with the use of a visual analog scale (VAS).

Results and Findings

The study found that the time needed to complete local anesthesia was similar for both groups, indicating comparability in efficiency for both types of blocks. It also found that the VAS scores between the two groups didn’t differ, suggesting a similar level of efficacy in terms of sedation, pain relief, and behavior management. Furthermore, the total duration of surgery was similar between the two groups.

Conclusion and Implications

The results indicate that the paravertebral nerve block and the local portal blocks offer comparable conditions during laparoscopic surgery for the closure of the nephrosplenic space. Therefore, both methods can be used interchangeably in surgical procedures. This flexibility can be beneficial in various surgical situations depending on individual circumstances, enhancing the versatility of treatment options for veterinarians.

Cite This Article

APA
Delli-Rocili MM, Cribb NC, Trout DR, Thomason JJ, Valverde A. (2020). Effectiveness of a paraverterbral nerve block versus local portal blocks for laparoscopic closure of the nephrosplenic space: A pilot study. Vet Surg, 49(5), 1007-1014. https://doi.org/10.1111/vsu.13452

Publication

Veterinary surgery : VS
ISSN: 1532-950X
NlmUniqueID: 8113214
Country: United States
Language: English
Volume: 49
Issue: 5
Pages: 1007-1014

Researcher Affiliations

Delli-Rocili, Massimo M
  • Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada.
Cribb, Nicola C
  • Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada.
Trout, Donald R
  • Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada.
Thomason, Jeffrey J
  • Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada.
Valverde, Alexander
  • Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada.

MeSH Terms

  • Analgesia / veterinary
  • Anesthetics, Local
  • Animals
  • Colic / surgery
  • Colic / veterinary
  • Female
  • Horse Diseases / surgery
  • Horses
  • Laparoscopy / veterinary
  • Lidocaine / administration & dosage
  • Lidocaine / pharmacology
  • Male
  • Nerve Block / methods
  • Nerve Block / veterinary
  • Pain Management / veterinary
  • Pain, Postoperative / prevention & control
  • Pain, Postoperative / veterinary
  • Pilot Projects

Grant Funding

  • Equine Guelph Research, Ontario Veterinary College, University of Guelph

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This article includes 27 references
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Citations

This article has been cited 1 times.
  1. Cantarelli C, Cribb NC, Delli-Rocili M, Brisson B, Zur Linden A, Caswell JL. Long-term assessment of nephrosplenic space closure in horses. Can J Vet Res 2026 Jan;90(1):7-15.
    pubmed: 41585009
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