Open AccessMeasurement of mean arterial pressure: comparison of the Vasotrac monitor with the finger differential oscillometric device
Author(s) -
K. Jagomägi,
Rein Raamat,
J. Talts,
Ulvi Ragun,
Peeter Tähepôld
Publication year - 2010
Publication title -
physiological research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.647
H-Index - 70
eISSN - 1802-9973
pISSN - 0862-8408
DOI - 10.33549/physiolres.931809
Subject(s) - radial artery , blood pressure , beat (acoustics) , artery , medicine , cardiology , mean arterial pressure , signal (programming language) , biomedical engineering , acoustics , heart rate , physics , computer science , programming language
The Vasotrac monitor provides non-invasive near-continuousblood pressure monitoring and is designed to be an alternative todirect intra-arterial blood pressure (BP) measurement. Ascompared to radial artery invasive BP and upper arm noninvasive BP, Vasotrac readings have been found to have a goodagreement with them. However, discrepancies have beenreported when rapid changes in BP exist. In the present study wecompared BP measured by the Vasotrac monitor on the radialartery with that recorded on the finger arteries by the differentialoscillometric device allowing measurement on the beat-to-beatbasis. Comparisons were performed on the mean arterialpressure (MAP) level. Special attention was paid to the signalconditioning before comparison of pressures of different temporalresolution. Altogether 383 paired MAP measurements were madein 14 healthy subjects. Based on all 383 paired measurements,the MAP values measured at the radial artery at rest were4.8±6.0 mm Hg higher than those measured on fingers. Theobserved difference between the Vasotrac and differentialoscillometric device can be explained by different measurementsites. This result is consistent with previous investigations, andthe Vasotrac monitor can be considered to adequately trackrelatively rapid MAP changes on the radial artery. Attentionshould be paid to a proper signal conditioning before comparisonof results obtained by different devices.