Document Detail

Finger arterial pressure measurement with Finapres.
MedLine Citation:
PMID:  8896298     Owner:  NLM     Status:  MEDLINE    
Finger arterial pressure measurement with Finapres has been available since a decade. Its availability has promoted at least 300 methodological and research papers over these years, outlining the usefulness and the limitations of the method and the device. Finapres is based on the volume clamp method of Peñáz and the Physiocal criteria of Wesseling. Tracking of intraarterial pressure is usually satisfactory even under conditions of strongly changing hemodynamics and high and very low blood pressures. Finapres accuracy is similar to that of other non-invasive methods. Systolic pressure levels scatter more than mean and diastolic levels. One source of error is physiologic and determined by the peripheral measurement site of the finger, causing pulse waveform distortion and a pressure gradient. The Finapres waveform can be filtered, however, to obtain a brachial pressure wave. This decreases systolic scatter under vaso-constrictive drug infusion and dynamic exercise to exhaustion, conditions where precision of systolic tracking has been criticized in the literature. Recently, level correction techniques were found which shift finger pressure up or down based on a regression equation with finger systolic and diastolic pressures. This procedure requires no additional measurements yet improves systolic, diastolic and mean level accuracy and precision remarkably. Finally, we show how to judge the quality of a Finapres recording from the behavior of Physiocal.
K H Wesseling
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Zeitschrift für Kardiologie     Volume:  85 Suppl 3     ISSN:  0300-5860     ISO Abbreviation:  Z Kardiol     Publication Date:  1996  
Date Detail:
Created Date:  1997-01-22     Completed Date:  1997-01-22     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0360430     Medline TA:  Z Kardiol     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  38-44     Citation Subset:  IM    
TNO-Biomedical Instrumentation, Amsterdam, The Netherlands.
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MeSH Terms
Blood Pressure Monitors*
Equipment Design
Fingers / blood supply
Plethysmography / instrumentation*
Quality Control
Reference Values
Sensitivity and Specificity
Signal Processing, Computer-Assisted / instrumentation*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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