Indirect measurement of mean blood pressure in the normotensive and hypotensive horse.
Abstract: Indirect mean arterial pressure was obtained from the tails of 78 anaesthetised and unanaesthetised normotensive and hypotensive horses. Data were obtained to determine the optimum cuff width in relation to tail circumference. A cuff that is too wide under-estimates and a cuff that is too narrow over-estimates blood pressure. With the optimum cuff width, which is slightly in excess of about one-fifth of the tail circumference, indirect mean blood pressure was obtained consistently in normotensive and hypotensive animals with mean blood pressures of 40 mmHg and frequently in animals with pressure as low as 30 mmHg.
Publication Date: 1979-07-01 PubMed ID: 488068DOI: 10.1111/j.2042-3306.1979.tb01340.xGoogle Scholar: Lookup
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- Comparative Study
- Journal Article
- Research Support
- U.S. Gov't
- P.H.S.
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 researchers studied the most effective way to indirectly measure mean arterial blood pressure in horses through tail cuffs. They found that the best cuff width to use depends on the tail’s circumference and confirmed that their method works well for both normal and low blood pressure cases.
Explanation of the Research
The research involved an experiment on 78 horses both under normal and lower than normal blood pressure circumstances. The process of collecting data revolved around establishing ideal conditions for indirect blood pressure measurement through varying cuff widths related to the animals’ tail circumference.
- The study first set to determine the optimum cuff width in relation to tail circumference. Researchers varied the cuff widths on the horse’s tails and measured the resulting blood pressures. This was a crucial part of the experiment as the results showed that a cuff that is too wide results in an underestimation of the blood pressure, while a cuff that is too narrow overestimates it. The objective was to find the optimal cuff width that would provide the most accurate blood pressure measurement.
- The research found the optimal cuff width to be slightly more than a fifth of the horse’s tail circumference. This was deemed the best proportion for obtaining accurate blood pressure readings from horses, and it was recommended for use in further indirect measurements.
- The study then went ahead to test the effectiveness of this optimized cuff width in normotensive (normal blood pressure) and hypotensive (low blood pressure) horses. The study’s findings confirmed that the cuff was effective for horses with a mean blood pressure of 40 mmHg, and also frequently in horses with pressure as low as 30 mmHg. This confirmed that the optimized cuff width worked effectively in different blood pressure scenarios, hence affirming its reliability.
In essence, the research demonstrates how considerations about cuff size can greatly impact the accuracy of indirect blood pressure measurement techniques in horses. The findings provide useful guidelines for adjustments to cuff width in line with the tail circumference, which can facilitate more accurate and consistent blood pressure readings.
Cite This Article
APA
Latshaw H, Fessler JF, Whistler SJ, Geddes LA.
(1979).
Indirect measurement of mean blood pressure in the normotensive and hypotensive horse.
Equine Vet J, 11(3), 191-194.
https://doi.org/10.1111/j.2042-3306.1979.tb01340.x Publication
Researcher Affiliations
MeSH Terms
- Animals
- Blood Pressure Determination / instrumentation
- Blood Pressure Determination / veterinary
- Horse Diseases / physiopathology
- Horses / physiology
- Hypotension / physiopathology
- Hypotension / veterinary
- Tail / blood supply
Citations
This article has been cited 8 times.- Caffey SR, Lund CM, Farnsworth KD, Fransson BA, Ragle CA. Effects of head position on internal and external carotid pressures in standing sedated horses. Can J Vet Res 2021 Apr;85(2):127-130.
- 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.
- Söder J, Bröjer JT, Nostell KE. Interday variation and effect of transportation on indirect blood pressure measurements, plasma endothelin-1 and serum cortisol in Standardbred and Icelandic horses. Acta Vet Scand 2012 Jun 10;54(1):37.
- Geddes LA, Voelz M, Combs C, Reiner D, Babbs CF. Characterization of the oscillometric method for measuring indirect blood pressure. Ann Biomed Eng 1982;10(6):271-80.
- Yamakoshi K, Shimazu H, Shibata M, Kamiya A. New oscillometric method for indirect measurement of systolic and mean arterial pressure in the human finger. Part 2: correlation study. Med Biol Eng Comput 1982 May;20(3):314-8.
- Yamakoshi K, Shimazu H, Shibata M, Kamiya A. New oscillometric method for indirect measurement of systolic and mean arterial pressure in the human finger. Part 1: model experiment. Med Biol Eng Comput 1982 May;20(3):307-13.
- Shimazu H, Ito H, Kobayashi H, Yamakoshi K. Idea to measure diastolic arterial pressure by volume oscillometric method in human fingers. Med Biol Eng Comput 1986 Sep;24(5):549-54.
- Shimazu H, Ito H, Kawarada A, Kobayashi H, Hiraiwa A, Yamakoshi K. Vibration technique for indirect measurement of diastolic arterial pressure in human fingers. Med Biol Eng Comput 1989 Mar;27(2):130-6.
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