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Home / Equine Research Bank / J Vet Emerg Crit Care (San Antonio) / Evaluation of the effects of medial saphenous venous pressur...
Journal of veterinary emergency and critical care (San Antonio, Tex. : 2001)2020; 30(6); 660-669; doi: 10.1111/vec.13000

Evaluation of the effects of medial saphenous venous pressures as an indirect method of measurement of intra-abdominal pressures in the horse.

Abstract: To evaluate the effect of changes in intra-abdominal pressure (IAP) on medial saphenous venous pressure (MSVP) and hemodynamics in normal horses. Methods: Experimental, in-vivo study. Methods: University Teaching Hospital. Methods: Convenience sample of 7 mixed breed horses; 5 geldings, and 2 mares. Methods: Pneumoperitoneum was induced in horses under standing sedation with carbon dioxide gas using a laparoscopic insufflator for a total of 60 minutes to simulate clinical elevation in IAP. Pressure was increased stepwise to 20 mm Hg over 30 minutes, and maintained at that pressure for 30 minutes to evaluate the effect of sustained intra-abdominal hypertension. The MSVP and vital parameters were recorded, along with direct arterial blood pressure from the transverse facial artery. Results: As IAP increased, MSVP increased in a stepwise manner, in concert with changes in IAP. The consistency in measurement between MSVP and IAP was high (intraclass correlation coefficient = 0.92; P < 0.001) and repeated measures correlation was excellent (r = 0.98; P < 0.001). Heart rate was unchanged over the course of the experiment (P = 0.09), however, respiratory rate increased with increasing IAP (P < 0.001). Arterial blood pressure also increased with insufflation (P < 0.001), with a significant difference at an IAP of 15 mm Hg (P = 0.04). Conclusions: This report provides preliminary data demonstrating a strong correlation between equine MSVP and changes in IAP, similar to that observed in other species. Further investigations are needed to evaluate this relationship, and to confirm these results in clinical patients.
© Veterinary Emergency and Critical Care Society 2020.
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Publication Date: 2020-10-08 PubMed ID: 33030803DOI: 10.1111/vec.13000Google Scholar: Lookup
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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 article documents an investigation into the effects of intra-abdominal pressure (IAP) on medial saphenous venous pressure (MSVP) in horses, revealing a strong correlation between the two.

Overview of Study

  • Conducted as an experimental, in-vivo study, the team analyzed a convenience sample of 7 mixed breed horses – 5 geldings and 2 mares.
  • To simulate a clinical elevation in IAP, the team used a laparoscopic insufflator to induce pneumoperitoneum with carbon dioxide gas. This was sustained for a period of 60 minutes.
  • This pressure increased in a stepwise manner to 20mm Hg over half the duration and was held constant for the remaining half hour in order to observe the implications of maintained intra-abdominal hypertension.

Methods and Measurements

  • The MSVP alongside other vital parameters were logged in intervals. Direct arterial blood pressure from the transverse facial artery was also observed and recorded.
  • This data was used to determine the relationship between the changes in IAP and MSVP.

Results

  • The results showed that as the IAP increased, the MSVP also increased correspondingly in a stepwise manner.
  • The reliability of the measurements between MSVP and IAP was rated as high, with an intraclass correlation coefficient of 0.92 (P < 0.001).
  • There seemed to be a non-dependency between IAP and heart rate as the heart rate remained constant during the experiment (P = 0.09).
  • However, the respiratory rate increased as the IAP increased (P < 0.001).
  • Arterial blood pressure also saw an increase (P < 0.001) with a note worthy difference at an IAP of 15 mm Hg (P = 0.04).

Conclusions

  • The study provides preliminary data that shows a strong correlation between variations in IAP and changes in MSVP in horses, a pattern that is also seen in other species.
  • More research is needed to further evaluate this relationship and to confirm these results in clinical patients.

Cite This Article

APA
Munsterman AS, Gillen AM, Coleridge MOD, Hanson RR. (2020). Evaluation of the effects of medial saphenous venous pressures as an indirect method of measurement of intra-abdominal pressures in the horse. J Vet Emerg Crit Care (San Antonio), 30(6), 660-669. https://doi.org/10.1111/vec.13000

Publication

Journal of veterinary emergency and critical care (San Antonio, Tex. : 2001)
ISSN: 1476-4431
NlmUniqueID: 101152804
Country: United States
Language: English
Volume: 30
Issue: 6
Pages: 660-669

Researcher Affiliations

Munsterman, Amelia S
  • Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, MI.
Gillen, Alexandra M
  • The Philip Leverhulme Equine Hospital, University of Liverpool, Chester High Road, Neston, Cheshire, United Kingdom.
Coleridge, Matthew O D
  • Fethard Equine Hospital, Fethard, Tipperary, Ireland.
Hanson, R Reid
  • Department of Clinical Sciences, College of Veterinary Medicine, Auburn University, Auburn, AL.

MeSH Terms

  • Abdomen / physiology
  • Animals
  • Blood Pressure / physiology
  • Carbon Dioxide
  • Female
  • Horses / physiology
  • Laparoscopy / veterinary
  • Male
  • Pneumoperitoneum, Artificial / veterinary
  • Pressure
  • Saphenous Vein / physiology

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Citations

This article has been cited 1 times.
  1. Straticò P, Guerri G, Palozzo A, Varasano V, Petrizzi L. Current Use of Equine Laparoscopy in Urogenital Disorders: A Scoping Review of the Literature from 2000 to 2021.. Vet Sci 2022 Jan 22;9(2).
    doi: 10.3390/vetsci9020041pubmed: 35202295google scholar: lookup
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