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Home / Equine Research Bank / J Vet Intern Med / Accuracy and Precision of Noninvasive Blood Pressure in Norm...
Journal of veterinary internal medicine2016; 30(3); 866-872; doi: 10.1111/jvim.13928

Accuracy and Precision of Noninvasive Blood Pressure in Normo-, Hyper-, and Hypotensive Standing and Anesthetized Adult Horses.

Abstract: Blood pressure is relevant to the diagnosis and management of many medical, cardiovascular and critical diseases. The accuracy of many commonly used noninvasive blood pressure (NIBP) monitors and the accuracy of NIBP measurements in hypo- and hypertensive standing horses has not been determined. Objective: The objective of this study was to investigate the accuracy of an oscillometric BP monitor in standing horses before and during pharmacologically induced hyper- and hypotension and to compare results in standing and anesthetized horses. Methods: Eight standing mares from a research herd (SG) and eight anesthetized horses from a hospital population (AG). Methods: Prospective experimental and observational studies. Invasive blood pressure (IBP) and NIBP, corrected to heart level, were measured simultaneously. In the SG hyper- and hypotension were induced by administration of phenylephrine (3 μg/kg/min IV for 15 minutes) and acepromazine (0.05 mg/kg IV), respectively. In the AG NIBP and IBP were recorded during regular hospital procedures. Results: There was a significant correlation between mean NIBP and IBP in standing (R = 0.88, P < .001) and anesthetized horses (R = 0.81, P < .001). The mean bias (lower, upper limit of agreement) was 16.4(-16.1, 48.9) mmHg for mean BP in the SG and 0.5(-22.3, 23.2) mmHg in the AG. The NIBP device was capable of identifying the increase and decrease in BP in all horses, but in the SG significant correlation between NIBP and IBP was only detected for the normotensive phase. Conclusions: While the evaluated oscillometric BP device allowed estimation of BP and adequately differentiated marked trends, the accuracy and precision were low in standing horses.
Copyright © 2016 The Authors. Journal of Veterinary Internal Medicine published by Wiley Periodicals, Inc. on behalf of the American College of Veterinary Internal Medicine.
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Publication Date: 2016-04-05 PubMed ID: 27059803PubMed Central: PMC4913577DOI: 10.1111/jvim.13928Google Scholar: Lookup
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  • Journal Article

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 article focuses on the study undertaken to determine the accuracy of noninvasive blood pressure monitors in diagnosing and managing blood pressure in standing and anesthetized horses during both normal and pharmaceutically-induced blood pressure conditions.

Research Objective

  • The article aims to explore how accurate an oscillometric Blood Pressure (BP) monitor is in recording blood pressure in horses. This is explored under two conditions – when the horses are standing and when they are anesthetized. Further, the research also looks into BP measurement during instances of pharmaceutically-induced hypertensive (high blood pressure) and hypotensive (low blood pressure) states.

Research Method

  • The research involves both prospective experimental and observational studies using a total of 16 horses. This includes eight standing mares from a research herd (SG) and eight anesthetized horses from a hospital population (AG).
  • Along with noninvasive blood pressure (NIBP) measurements, invasive blood pressure (IBP) measurements were also taken simultaneously for better comparison and accurate results.
  • The researchers induced hypertension and hypotension in the standing group by administering phenylephrine and acepromazine, respectively. Meanwhile, in the anesthetized group, NIBP and IBP were recorded during regular hospital procedures.

Research Findings

  • The study found a significant correlation between the mean NIBP and IBP in both standing (R = 0.88) and anesthetized horses (R = 0.81).
  • The NIBP device was proficient in detecting both the rise and fall in BP in all horses, but a significant correlation between NIBP and IBP was only established during the normotensive phase in the standing group.
  • However, the mean bias (that is, the degree of deviation towards one side) was found to be 16.4 mmHg for mean BP in the standing group and 0.5 mmHg in the anesthetized group.

Research Conclusion

  • The findings of the research suggest that while the oscillometric BP device does provide a decent estimation of blood pressure and successfully differentiates significant trends, its accuracy and precision in standing horses could be improved.

Cite This Article

APA
Heliczer N, Lorello O, Casoni D, Navas de Solis C. (2016). Accuracy and Precision of Noninvasive Blood Pressure in Normo-, Hyper-, and Hypotensive Standing and Anesthetized Adult Horses. J Vet Intern Med, 30(3), 866-872. https://doi.org/10.1111/jvim.13928

Publication

Journal of veterinary internal medicine
ISSN: 1939-1676
NlmUniqueID: 8708660
Country: United States
Language: English
Volume: 30
Issue: 3
Pages: 866-872

Researcher Affiliations

Heliczer, N
  • Swiss Institute of Equine Medicine, Department of Veterinary Clinical Science, School of Veterinary Medicine, Vetsuisse Faculty, University of Bern and Agroscope, Bern, Switzerland.
Lorello, O
  • Swiss Institute of Equine Medicine, Department of Veterinary Clinical Science, School of Veterinary Medicine, Vetsuisse Faculty, University of Bern and Agroscope, Bern, Switzerland.
Casoni, D
  • Anaesthesia Division, Vetsuisse Faculty, University of Bern and Agroscope, Bern, Switzerland.
Navas de Solis, C
  • Swiss Institute of Equine Medicine, Department of Veterinary Clinical Science, School of Veterinary Medicine, Vetsuisse Faculty, University of Bern and Agroscope, Bern, Switzerland.

MeSH Terms

  • Acepromazine
  • Anesthesia / veterinary
  • Animals
  • Blood Pressure / drug effects
  • Blood Pressure / physiology
  • Blood Pressure Determination / methods
  • Blood Pressure Determination / veterinary
  • Female
  • Horses / physiology
  • Hypertension / chemically induced
  • Hypertension / physiopathology
  • Hypotension / chemically induced
  • Hypotension / physiopathology
  • Male
  • Oscillometry / veterinary
  • Phenylephrine

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Citations

This article has been cited 11 times.
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