Abstract
This study examined the relationship between direct mean arterial blood pressure and cuff pressure for the maximum acoustic index calculated from the Korotkoff sounds in the dog. The acoustic index was computed by summing the squares of amplitudes in each Korotkoff sound complex, thereby providing a measure of acoustic energy content. Mean arterial pressure was compared with cuff pressure for the maximum acoustic index. Ten mongrel dogs were fitted with appropriately sized blood-pressure cuffs containing a microphone mounted inside the bladder and positioned over the brachial artery. The Korotkoff sounds, cuff pressure, and direct arterial pressure were recorded over a range of mean arterial pressures (23 to 155 mm Hg), achieved by manipulating the depth of anesthesia with halothane. It was found that cuff pressure at the maximum acoustic index overestimated mean arterial blood pressure by a mean of 14% (range, -8 to + 30%).
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Geddes, LA, Voelz M, Combs C, Reiner D. Characterization of the oscillometric method for measuring indirect blood pressure. Ann Biomed Eng 1983;10(6):271–280
Geddes LA. The direct and indirect measurement of blood pressure. Chicago: Year Book Medical Publishers, 1970
Erlanger J. Studies in blood pressure estimation by indirect methods. II. The mechanism of the compression sounds of Korotkoff. Am J Physiol 1916;40:82–125
Rodbard S. The clinical utility of the arterial pulses and sounds. Heart Lung 1972;1(6):776–784
Bordley J, Connor C. Hamilton W, et al. Recommendations for human blood pressure determinations by sphygmomanometers. Circulation 1951;40:503–509
Geddes LA, Whistler SJ. The error in indirect blood pressure measurement with the incorrect size of cuff. Am Heart J 1978;96(1):4–8
Kirkendall W, Feinlieb M, Fries E, Mark A. Recommendations for human blood pressure determination by sphygmomanometers. Dallas, TX: American Heart Assoc, 1981
Geddes L, Moore A. The efficient detection of Korotkoff sounds. Med Biol Eng Comput 1968;6:603–609
Wessale JL, Smith LA, Reed ME, et al. Indirect auscultatory systolic and diastolic pressures in the anesthetized dog. Am J Vet Res 1985;46(10):2129–2132
Davis GG, Geddes LA. Auscultatory mean blood pressure. J Clin Eng 1989;13:443–446
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Supported by grant HL31089 from the National Heart, Lung, and Blood Institute and sponsored in part by the Kendall Company, Barrington, IL.
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Davis, G.J., Geddes, L.A. Auscultatory mean blood pressure. J Clin Monitor Comput 6, 261–265 (1990). https://doi.org/10.1007/BF02842484
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DOI: https://doi.org/10.1007/BF02842484