New oscillometric method for indirect measurement of systolic and mean arterial pressure in the human finger. Part 1: Model experiment

K. Yamakoshi, H. Shimazu, M. Shibata, A. Kamiya

Research output: Contribution to journalArticlepeer-review

110 Citations (Scopus)

Abstract

To analyse the mechanism of the occurrence of the maximum volume pulsation in an artery during the application of counterpressure, the static, and dynamic pressure-volume (P-V) relationship was measured in excised arterial segments placed in a compression chamber. Teh volume change caused by perfusing the segment with a sinusoidal pump was detected by an infrared photoelectric plethysmograph during the application of counterpressure. It was revealed that the characteristic change in the amplitude of volume pulsation in response to the gradual change in the counterpressure was due to the nonlinearity of the P-V relation of the artery, and that the value of the counterpressure showing the maximum pulsation amplitude was coincided with the mean arterial pressure. From this evidence it was concluded that the maximum volume pulsation occurs when the transmural pressure was equal to zero, i.e. the arterial wall is unloaded. Based on the results a new oscillometric method for the indirect measurement of systolic and mean arterial pressure in an arterial segment was designed. Through the comparison of data with the actual pressure produced by perfusing the segment, it was demonstrated that systolic and mean arterial pressure can be indirectly measured by this technique within ±3 mm Hg error.

Original languageEnglish
Pages (from-to)307-313
Number of pages7
JournalMedical & Biological Engineering & Computing
Volume20
Issue number3
DOIs
Publication statusPublished - 1982 May 1
Externally publishedYes

Keywords

  • Oscillometric method
  • Pressure-volume relationship
  • Transmural pressure
  • Vascular unloaded state
  • Volume pulsation

ASJC Scopus subject areas

  • Biomedical Engineering
  • Computer Science Applications

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