PMID- 8873662
OWN - NLM
STAT- MEDLINE
DCOM- 19961216
LR  - 20190623
IS  - 0009-7322 (Print)
IS  - 0009-7322 (Linking)
VI  - 94
IP  - 8
DP  - 1996 Oct 15
TI  - Reconstruction of brachial artery pressure from noninvasive finger pressure 
      measurements.
PG  - 1870-5
AB  - BACKGROUND: Pulse wave distortions, mainly caused by reflections, and pressure 
      gradients, caused by flow in the resistive vascular tree, may cause differences 
      between finger and brachial artery pressures. These differences may limit the use 
      of finger pressure measurements. We investigated whether brachial artery pressure 
      waves could be reconstructed from finger pressure measurements by correcting for 
      the pressure gradient in addition to correction for pulse wave distortion with a 
      previously described filter. METHODS AND RESULTS: Finger artery pressure (with 
      Finapres), intra-arterial brachial artery pressure (BAP), Riva-Rocci/ Korotkoff 
      (RRK), oscillometric, and return-to-flow (RTF) measurements were simultaneously 
      performed in 57 healthy elderly subjects and patients with vascular disease 
      and/or hypertension. A generalized waveform filter was used to correct for pulse 
      wave distortions. Correction equations for the pressure gradient, based on finger 
      pressure, RRK, RTF, or oscillometric measurements, were obtained in 28 randomly 
      selected subjects and tested in 29. Before reconstruction, Finapres 
      underestimated mean and diastolic BAP (finger pressure minus BAP: systolic, -3.2 
      +/- 16.9 mm Hg; mean, -13.0 +/- 10.5 mm Hg; diastolic, -8.4 +/- 9.0 mm Hg [mean 
      +/- SD]). After filtering, reconstructed BAP waves were similar to actual BAP in 
      shape but not in pressure level. Optimal correction for the pressure gradient 
      with an equation based on RTF measurements reduced the pressure differences to 
      meet American Association for the Advancement of Medical Instrumentation criteria 
      (reconstructed finger pressure minus BAP: systolic, 3.7 +/- 7.0 mm Hg; mean, 0.7 
      +/- 4.6 mm Hg; and diastolic, 1.0 +/- 4.9 mm Hg). CONCLUSIONS: BAP waves can be 
      reconstructed from noninvasive finger pressure registrations when finger pressure 
      waves are corrected for pulse wave distortion and individual pressure gradients.
FAU - Bos, W J
AU  - Bos WJ
AD  - Department of Internal Medicine I, University Hospital Rotterdam, Dijkzigt, The 
      Netherlands.
FAU - van Goudoever, J
AU  - van Goudoever J
FAU - van Montfrans, G A
AU  - van Montfrans GA
FAU - van den Meiracker, A H
AU  - van den Meiracker AH
FAU - Wesseling, K H
AU  - Wesseling KH
LA  - eng
PT  - Clinical Trial
PT  - Journal Article
PT  - Randomized Controlled Trial
PL  - United States
TA  - Circulation
JT  - Circulation
JID - 0147763
SB  - IM
MH  - Adult
MH  - Aged
MH  - Aged, 80 and over
MH  - *Blood Pressure
MH  - Blood Pressure Determination/*methods
MH  - Brachial Artery/*physiology
MH  - Evaluation Studies as Topic
MH  - Fingers/*blood supply
MH  - Humans
MH  - Hypertension/physiopathology
MH  - Middle Aged
MH  - Models, Cardiovascular
MH  - Reference Values
MH  - Vascular Diseases/physiopathology
EDAT- 1996/10/15 00:00
MHDA- 1996/10/15 00:01
CRDT- 1996/10/15 00:00
PHST- 1996/10/15 00:00 [pubmed]
PHST- 1996/10/15 00:01 [medline]
PHST- 1996/10/15 00:00 [entrez]
AID - 10.1161/01.cir.94.8.1870 [doi]
PST - ppublish
SO  - Circulation. 1996 Oct 15;94(8):1870-5. doi: 10.1161/01.cir.94.8.1870.