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Home / Equine Research Bank / Can J Vet Res / Postoperative effects of anesthesia and surgery on resting e...
Canadian journal of veterinary research = Revue canadienne de recherche veterinaire2006; 70(4); 257-262;

Postoperative effects of anesthesia and surgery on resting energy expenditure in horses as measured by indirect calorimetry.

Abstract: In this study, we aimed to define the effects of anesthesia and surgery on the resting energy expenditure of horses in experimental conditions. Six horses were used in a longitudinal study with 2 study periods: before and after anesthesia and surgery. Every horse underwent a standard 90-min ventral midline exploratory laparotomy. Oxygen uptake (VO2) and carbon dioxide output (VCO2) were measured, with the use of a closed-circuit spirometry system, on 5 consecutive days immediately before and after the surgery. In 3 consecutive 5-min periods each day, the expired air was collected in a Collins spirometer. Samples of the expired gas were drawn from the spirometer through a drying column into O2 and CO2 analyzers. Resting energy expenditure was calculated as [(VO2 STPD*3.94) + (VCO2 STPD*1.11)]*1.44. This study showed that anesthesia and ventral midline exploratory laparotomy in experimental conditions increase the postoperative caloric demand in horses by an average of 1.0 Mcal/d, which represents approximately a 10% increase (P = 0.03). Additional studies in critically ill horses after surgery are needed to determine their caloric needs and to optimize their nutritional management. ( + (Traduit par Docteur Serge Messier)
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Publication Date: 2006-10-18 PubMed ID: 17042377PubMed Central: PMC1562532
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  • Journal Article
  • Research Support
  • Non-U.S. Gov't

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.

This research paper investigates the impact of anesthesia and surgery on the resting energy needs of horses in a controlled experimental environment, indicating an increase in caloric demand following surgical procedures.

Research Methodology

  • The researchers carried out a longitudinal study utilizing six horses, investigating their energy expenditure before and after undergoing anesthesia and surgery.
  • Each horse was subjected to a standard ventral midline exploratory laparotomy lasting 90 minutes. This type of surgery involves an incision along the midline of the abdomen, allowing the veterinarian to examine the abdominal organs.
  • To measure the horses’ energy expenditure, the researchers used a closed-circuit spirometry system which allows for an accurate measurement of the oxygen (VO2) uptake and carbon dioxide (VCO2) output, indicators of metabolic activity.
  • The measurements were conducted over five consecutive days both prior to and following the surgery within three separate five-minute intervals each day.
  • The researchers collected and examined the air exhaled by the horses using a Collins spirometer, drawing samples through a drying column for analysis.

Results

  • The resting energy expenditure was calculated using a formula involving the collection of the VO2 and VCO2 measurements.
  • The results suggested that following anesthesia and surgery, the horses experienced an increase in their resting caloric requirements by approximately 1.0 Mcal/d, corresponding to around a 10% increase.
  • This increase was statistically significant, with a P-value of 0.03, indicating the likelihood of this outcome happening by chance is low.

Implications and Future Research

  • These findings contribute to our understanding of the nutritional management of horses post-surgery, suggesting that surgical procedures necessitate increased caloric intake to meet the increased energy expenditure.
  • However, the authors advocate for additional research to be carried out on critically ill horses following surgery for a more comprehensive understanding of their caloric requirements and to better inform post-operative nutritional management.

Cite This Article

APA
Cruz AM, Coté N, McDonell WN, Geor RJ, Wilson BA, Monteith G, Li R. (2006). Postoperative effects of anesthesia and surgery on resting energy expenditure in horses as measured by indirect calorimetry. Can J Vet Res, 70(4), 257-262.

Publication

Canadian journal of veterinary research = Revue canadienne de recherche veterinaire
ISSN: 0830-9000
NlmUniqueID: 8607793
Country: Canada
Language: English
Volume: 70
Issue: 4
Pages: 257-262

Researcher Affiliations

Cruz, Antonio M
  • Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, Ontario. acruz@ovc.uoguelph.ca
Coté, Nathalie
    McDonell, Wayne N
      Geor, Raymond J
        Wilson, Brian A
          Monteith, Gabrielle
            Li, Ronald

              MeSH Terms

              • Anesthesia / veterinary
              • Animals
              • Basal Metabolism / physiology
              • Calorimetry, Indirect / methods
              • Calorimetry, Indirect / veterinary
              • Carbon Dioxide / analysis
              • Energy Metabolism / physiology
              • Horses / metabolism
              • Horses / physiology
              • Horses / surgery
              • Laparotomy / methods
              • Laparotomy / veterinary
              • Longitudinal Studies
              • Male
              • Monitoring, Physiologic / methods
              • Monitoring, Physiologic / veterinary
              • Oxygen Consumption / physiology
              • Postoperative Period
              • Pulmonary Gas Exchange / physiology
              • Spirometry / methods
              • Spirometry / veterinary
              • Time Factors

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              Citations

              This article has been cited 1 times.
              1. Chae WS, Choi S, Sugiyama D, Richerson GB, Brennan TJ, Kang S. Effect of Thoracic Epidural Anesthesia in a Rat Model of Phrenic Motor Inhibition after Upper Abdominal Surgery. Anesthesiology 2018 Oct;129(4):791-807.
                doi: 10.1097/ALN.0000000000002331pubmed: 29952817google scholar: lookup
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