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Home / Equine Research Bank / Vet Anaesth Analg / Agreement of high definition oscillometry with direct arteri...
Veterinary anaesthesia and analgesia2014; 42(3); 286-291; doi: 10.1111/vaa.12203

Agreement of high definition oscillometry with direct arterial blood pressure measurement at different blood pressure ranges in horses under general anaesthesia.

Abstract: To determine the agreement of high definition oscillometry (HDO) with direct arterial blood pressure measurements in normotensive, hypotensive and hypertensive horses during general anaesthesia. Methods: Experimental study. Methods: Seven healthy warmblood horses, aged 3-11 years, weighing 470-565 kg. Methods: Measurements from a HDO device with the cuff placed around the base of the tail were compared with pressures measured invasively from the facial artery. High blood pressures were induced by intravenous (IV) administration of dobutamine (5 μg kg(-1) minute(-1)) over ten minutes followed by norepinephrine (0.1 mg kg(-1) IV) and low pressures by increasing the inspired fraction of isoflurane and administration of nitroglycerine (0.05 mg kg(-1) IV). For analysis three pressure levels were determined: high (MAP>110 mmHg), normal (60 mmHg
© 2014 Association of Veterinary Anaesthetists and the American College of Veterinary Anesthesia and Analgesia.
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Publication Date: 2014-07-23 PubMed ID: 25053371DOI: 10.1111/vaa.12203Google 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 study examines the compatibility of High Definition Oscillometry (HDO), a non-invasive method, and direct arterial blood pressure measurements in normotensive, hypotensive, and hypertensive horses that are under general anesthesia.

Research Methodology

  • The study was conducted on seven healthy warmblood horses aged between 3-11 years and weighing between 470-565 kg.
  • The researchers attached the HDO device cuff around the base of the horse’s tail. Simultaneously, they made invasive measurements from the facial artery of the horse for comparison.
  • They induced high blood pressure in the horses using intravenous administration of dobutamine and norepinephrine. On the other hand, low pressure was stimulated by increasing the fraction of isoflurane inspired by the horses and administering nitroglycerine.
  • They set three pressure levels for the analysis: high (MAP >110 mmHg), normal (60 mmHg < MAP < 110 mmHg), and low (MAP < 60 mmHg).
  • They used the Bland-Altman analysis for comparing the non-invasive and invasive measurements results.

Research Findings

  • A total of 245 paired measurements of systolic (SAP), mean (MAP), and diastolic (DAP) pressures were obtained from the horses.
  • The researchers found that the HDO device was underestimating the blood pressure during hypertensive and normotensive levels. Conversely, the device overestimated the pressure at hypotensive levels.
  • The highest compatibility was noted for SAP and MAP within the normotensive range. At this level, the bias ± standard deviation for SAP, MAP and DAP were 0.1 ± 19.4 mmHg, 0.5 ± 14.0, and 4.7 ± 15.6, respectively.
  • At high pressure levels, the bias and standard deviation were 26.1 ± 37.3 (SAP), 4.2 ± 19.4 (MAP), 1.5 ± 16.8 (DAP). Alternatively, at low pressures, they were -20.0 ± 20.9 (SAP), -11.4 ± 19.6 (MAP), -4.7 ± 20.1 (DAP).
  • Furthermore, HDO measurements frequently failed when MAP was less than 50 mmHg.

Conclusions of the Study

  • The research found a substantial agreement between the non-invasive HDO and invasive blood pressure measurements at normotensive levels in the horses.
  • However, the HDO technique was not reliable in low and high-pressure ranges.
  • The study suggests that invasive measurement is more dependable when hemodynamic instability is suspected.

Cite This Article

APA
Tünsmeyer J, Hopster K, Feige K, Kästner SB. (2014). Agreement of high definition oscillometry with direct arterial blood pressure measurement at different blood pressure ranges in horses under general anaesthesia. Vet Anaesth Analg, 42(3), 286-291. https://doi.org/10.1111/vaa.12203

Publication

Veterinary anaesthesia and analgesia
ISSN: 1467-2995
NlmUniqueID: 100956422
Country: United States
Language: English
Volume: 42
Issue: 3
Pages: 286-291

Researcher Affiliations

Tünsmeyer, Julia
  • Small Animal Clinic, University of Veterinary Medicine Hannover Foundation, Hannover, Germany.
Hopster, Klaus
    Feige, Karsten
      Kästner, Sabine Br

        MeSH Terms

        • Anesthesia, General / veterinary
        • Animals
        • Blood Pressure / physiology
        • Blood Pressure Monitors / veterinary
        • Horses / physiology
        • Oscillometry / instrumentation
        • Oscillometry / methods
        • Oscillometry / veterinary

        Citations

        This article has been cited 8 times.
        1. Walter H, Kästner SBR, Amon T, Tünsmeyer JMA. Evaluation of Two Veterinary Oscillometric Noninvasive Blood Pressure (NIBP) Measurement Devices (petMAP Graphic II and High-Definition Oscillometry) in Dogs. Vet Sci 2025 Apr 9;12(4).
          doi: 10.3390/vetsci12040349pubmed: 40284851google scholar: lookup
        2. Pratt S, Barnes TS, Cowling N, de Klerk K, Rainger J, Sole-Guitart A, Woldeyohannes S, Goodwin W. Bias Associated with Peripheral Non-Invasive Compared to Invasive Arterial Blood Pressure Monitoring in Healthy Anaesthetised and Standing Horses Using the Bionet BM7Vet. Vet Sci 2022 Jan 28;9(2).
          doi: 10.3390/vetsci9020052pubmed: 35202305google scholar: lookup
        3. Twele L, Neudeck S, Delarocque J, Verhaar N, Reiners J, Noll M, Tünsmeyer J, Kästner SBR. Agreement of High-Definition Oscillometry (HDO) and Invasive Blood Pressure Measurements at a Metatarsal Artery in Isoflurane-Anaesthetised Horses. Animals (Basel) 2022 Feb 2;12(3).
          doi: 10.3390/ani12030363pubmed: 35158686google scholar: lookup
        4. Skelding A, Valverde A. Review of non-invasive blood pressure measurement in animals: Part 2 - Evaluation of the performance of non-invasive devices. Can Vet J 2020 May;61(5):481-498.
          pubmed: 32355347
        5. Skelding A, Valverde A. Non-invasive blood pressure measurement in animals: Part 1 - Techniques for measurement and validation of non-invasive devices. Can Vet J 2020 Apr;61(4):368-374.
          pubmed: 32255821
        6. Brownlee RD, Kass PH, Sammak RL. Blood Pressure Reference Intervals for Ketamine-sedated Rhesus Macaques (Macaca mulatta). J Am Assoc Lab Anim Sci 2020 Jan 1;59(1):24-29.
          doi: 10.30802/AALAS-JAALAS-19-000072pubmed: 31896390google scholar: lookup
        7. Nostell KE, Lindåse SS, Bröjer JT. Blood pressure in Warmblood horses before and during a euglycemic-hyperinsulinemic clamp. Acta Vet Scand 2016 Oct 20;58(Suppl 1):65.
          doi: 10.1186/s13028-016-0247-ypubmed: 27766986google scholar: lookup
        8. Heliczer N, Lorello O, Casoni D, Navas de Solis C. Accuracy and Precision of Noninvasive Blood Pressure in Normo-, Hyper-, and Hypotensive Standing and Anesthetized Adult Horses. J Vet Intern Med 2016 May;30(3):866-72.
          doi: 10.1111/jvim.13928pubmed: 27059803google scholar: lookup
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