圧—容積曲線変曲点に着目した容積振動型収縮期・拡張期血圧決定法の提案 A New Method for Indirect Determination of Systolic and Diastolic Blood Pressure in the Radial Artery Using Inflection-Points of Pressure-Volume Curves Based on the Volume-Oscillometric Method

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A new method is presented for the indirect measurement of systolic (SBP) and diastolic blood pressure (DBP) in the radial artery. We use the volume-oscillometric method with a wrist cuff and then, utilizing the photo-plethysmograph (PPG) signal together with cuff pressure measurements, we derive pressure-volume curves (PVC). The principle of this method, named "PVC inflection-point method", is to identify the indirect SBP and DBP using the inflection-points of envelope curves overlaying respectively the lower and upper points of the photo-plethysmographic pulsation signals superimposed on an arterial volume signal during the volume-oscillometric procedure. The accuracy of the method was evaluated by comparison with measurements from arterial catheterization in two healthy subjects. During the test procedure, a prototype PPG sensor for the PVC inflection-point method was attached to the left wrist, and arterial catheterization of the right radial artery for was performed to obtain simultaneous blood pressure recordings. The Bland-Altman plots for the comparative analysis showed good agreements between the two methods for both SBP (+2.3±7.7 (mean±S.D.) mmHg) and DBP (-1.8±6.4mmHg) measurement. We conclude that the proposed PVC inflection-point method appears promising to determine indirect SBP and DBP values with appropriate accuracy for convenient and practical use.

A new method is presented for the indirect measurement of systolic (<i>SBP</i>) and diastolic blood pressure (<i>DBP</i>) in the radial artery. We use the volume-oscillometric method with a wrist cuff and then, utilizing the photo-plethysmograph (<i>PPG</i>) signal together with cuff pressure measurements, we derive pressure-volume curves (<i>PVC</i>). The principle of this method, named "PVC inflection-point method", is to identify the indirect <i>SBP</i> and <i>DBP</i> using the inflection-points of envelope curves overlaying respectively the lower and upper points of the photo-plethysmographic pulsation signals superimposed on an arterial volume signal during the volume-oscillometric procedure. The accuracy of the method was evaluated by comparison with measurements from arterial catheterization in two healthy subjects. During the test procedure, a prototype <i>PPG</i> sensor for the PVC inflection-point method was attached to the left wrist, and arterial catheterization of the right radial artery for was performed to obtain simultaneous blood pressure recordings. The Bland-Altman plots for the comparative analysis showed good agreements between the two methods for both <i>SBP</i> (+2.3±7.7 (mean±S.D.) mmHg) and <i>DBP</i> (-1.8±6.4mmHg) measurement. We conclude that the proposed PVC inflection-point method appears promising to determine indirect <i>SBP</i> and <i>DBP</i> values with appropriate accuracy for convenient and practical use.

収録刊行物

  • 生体医工学

    生体医工学 49(6), 968-976, 2011

    日本生体医工学会 = Japanese Society for Medical and Biological Engineering

各種コード

  • NII論文ID(NAID)
    130004947519
  • NII書誌ID(NCID)
    AA11633569
  • 本文言語コード
    JPN
  • 資料種別
    Journal Article
  • ISSN
    1347-443X
  • NDL 記事登録ID
    023569686
  • NDL 請求記号
    Z19-108
  • データ提供元
    NDL  IR  J-STAGE 
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