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Recording of dynamic arterial compliance changes during hand elevation
Author(s) -
Jagomägi Kersti,
Raamat Rein,
Talts Jaak,
Ragun Ulvi,
Länsimies Esko,
Jurvelin Jukka
Publication year - 2005
Publication title -
clinical physiology and functional imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.608
H-Index - 67
eISSN - 1475-097X
pISSN - 1475-0961
DOI - 10.1111/j.1475-097x.2005.00636.x
Subject(s) - medicine , beat (acoustics) , blood pressure , photoplethysmogram , pulse pressure , compliance (psychology) , biomedical engineering , cardiology , acoustics , physics , telecommunications , psychology , social psychology , computer science , wireless
Summary Finger arterial compliance has been studied on the beat‐to‐beat basis by using the digital arterial pressure and volume waveforms and performing measurements at zero transmural pressure during arm elevation in 11 volunteers. Continuous non‐invasive finger blood pressure was measured by applying the Finapres monitor and the finger volume pulses were recorded by the UT9201 physiograph by using the photoplethysmographic principle of registration. Estimation of the beat‐to‐beat finger arterial compliance is based on (i) the recorded volume and pressure wave amplitudes ( V pulse and P pulse ) and (ii) on the calculation of the slope of the pressure–volume relationship from the first derivatives d V /d t and d P /d t of the recorded volume and pressure pulses near the point of the maximum slope. The results of the study demonstrate that the applied two methods similarly (correlation coefficient r = 0·97) describe the changes of the beat‐to‐beat compliance during hand elevation test. At the same time the second estimate was 18% higher than the first one ( P = 0·003).