© 1997 by European Society of Cardiology
Copyright © 1997, European Society of Cardiology
Models of brachial to finger pulse wave distortion and pressure decrement
aClinical Physiopathology Department, University of Florence, Viale Morgagni 85, 50134 Florence, Italy
bDepartment of Electrical Engineering, Technical University Eindhoven, PO Box 513, 5600 MB Eindhoven, Netherlands
cTNO-TPD BioMedical Instrumentation, Academic Medical Centre, Suite L0-002, Meibergdreef 9, 1105 AZ Amsterdam, Netherlands
Objective: To model the pulse wave distortion and pressure decrement occurring between brachial and finger arteries. Distortion reversion and decrement correction were also our aims. Methods: Brachial artery pressure was recorded intra-arterially and finger pressure was recorded non-invasively by the Finapres technique in 53 adult human subjects. Mean pressure was subtracted from each pressure waveform and Fourier analysis applied to the pulsations. A distortion model was estimated for each subject and averaged over the group. The average inverse model was applied to the full finger pressure waveform. The pressure decrement was modelled by multiple regression on finger systolic and diastolic levels. Results: Waveform distortion could be described by a general, frequency dependent model having a resonance at 7.3 Hz. The general inverse model has an anti-resonance at this frequency. It converts finger to brachial pulsations thereby reducing average waveform distortion from 9.7 (s.d. 3.2) mmHg per sample for the finger pulse to 3.7 (1.7) mmHg for the converted pulse. Systolic and diastolic level differences between finger and brachial arterial pressures changed from –4 (15) and –8 (11) to +8 (14) and +8 (12) mmHg, respectively, after inverse modelling, with pulse pressures correct on average. The pressure decrement model reduced both the mean and the standard deviation of systolic and diastolic level differences to 0 (13) and 0 (8) mmHg. Diastolic differences were thus reduced most. Conclusion: Brachial to finger pulse wave distortion due to wave reflection in arteries is almost identical in all subjects and can be modelled by a single resonance. The pressure decrement due to flow in arteries is greatest for high pulse pressures superimposed on low means.
KEYWORDS Finapres; Brachial-to-finger modelling; Waveform distortion; Blood pressure; Human
* Corresponding author: Tel. +39 55 422 2339; Fax +39 55 412396. pagizd{at}cesitl.unifi.it
CiteULike 
Connotea 
Del.icio.us What's this?
This article has been cited by other articles:
|
|
 |
|
  J. Lemson, C. M. Hofhuizen, O. Schraa, J. J. Settels, G. J. Scheffer, and J. G. van der Hoeven The Reliability of Continuous Noninvasive Finger Blood Pressure Measurement in Critically Ill Children Anesth. Analg., March 1, 2009; 108(3): 814 - 821. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 B. E. Westerhof, I. Guelen, W. J. Stok, H. A. J. Lasance, C. A. P. L. Ascoop, K. H. Wesseling, N. Westerhof, W. J. W. Bos, N. Stergiopulos, and J. A. E. Spaan Individualization of transfer function in estimation of central aortic pressure from the peripheral pulse is not required in patients at rest J Appl Physiol, December 1, 2008; 105(6): 1858 - 1863. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 B. E. Westerhof, J. Gisolf, J. M. Karemaker, K. H. Wesseling, N. H. Secher, and J. J. van Lieshout Time course analysis of baroreflex sensitivity during postural stress Am J Physiol Heart Circ Physiol, December 1, 2006; 291(6): H2864 - H2874. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 F. Lador, M. Azabji Kenfack, C. Moia, M. Cautero, D. R. Morel, C. Capelli, and G. Ferretti Simultaneous determination of the kinetics of cardiac output, systemic O2 delivery, and lung O2 uptake at exercise onset in men Am J Physiol Regulatory Integrative Comp Physiol, April 1, 2006; 290(4): R1071 - R1079. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 L. W. J Bogert and J. J van Lieshout Non-invasive pulsatile arterial pressure and stroke volume changes from the human finger Exp Physiol, July 1, 2005; 90(4): 437 - 446. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 B. P.M. Imholz, W. Wieling, G. A. van Montfrans, and K. H. Wesseling Fifteen years experience with finger arterial pressure monitoring:: assessment of the technology Cardiovasc Res, June 1, 1998; 38(3): 605 - 616. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
N. Stergiopulos, B. E. Westerhof, and N. Westerhof Physical basis of pressure transfer from periphery to aorta: a model-based study Am J Physiol Heart Circ Physiol, April 1, 1998; 274(4): H1386 - H1392. [Abstract] [Full Text] [PDF]
|
|