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Noninvasive blood pressure measurement on the temporal artery using the auscultatory method

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Abstract

Blood pressures in the temporal artery of five normotensive subjects were recorded using a modified auscultatory setup. The setup comprised a pediatric cuff to occlude the artery and a piezoelectric contact microphone to record the Korotkoff sounds. Both the cuff and microphone were held in their respective positions with an adjustable head band. The recordings were taken under four different conditions: the subject lying supine, the subject sitting at rest, the subject sitting immediately after exercise and the subject moving the head gently. These recordings were compared with readings from the brachial artery, obtained with a commercially available automatic blood pressure measuring device. Korotkoff sounds were analyzed in the time and frequency domain. Results indicate that Korotkoff sounds in the temporal artery are much smaller in amplitude, and do not exhibit the same distinctive phases as those of the brachial artery. Despite these differences, these sounds can be used to detect blood pressures at head level. The accuracy of the readings was within ±10%. Successful readings were also obtained with gentle head motions, demonstrating that this setup has the potential to be developed into an ambulatory blood pressure monitoring system.

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Authors and Affiliations

  1. University of Texas at Arlington, Arlington, TX

    Damodar Shenoy & Wolf W. von Maltzahn

  2. University of Texas Southwestern Medical Center, Dallas, TX

    Jay C. Buckey

Authors
  1. Damodar Shenoy
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  2. Wolf W. von Maltzahn
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  3. Jay C. Buckey
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Shenoy, D., von Maltzahn, W.W. & Buckey, J.C. Noninvasive blood pressure measurement on the temporal artery using the auscultatory method. Ann Biomed Eng 21, 351–360 (1993). https://doi.org/10.1007/BF02368627

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  • DOI: https://doi.org/10.1007/BF02368627

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