Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub. 2006, 150(2):339-344 | DOI: 10.5507/bp.2006.052
PULSE WAVE VARIABILITY WITHIN TWO SHORT-TERM MEASUREMENTS
- Department of Medical Biophysics, Faculty of Medicine, Palacky University, Olomouc
Background: Pulse wave analysis permits non-invasive assessment of indices of arterial elasticity. Decreased arterial elasticity results in higher pulse wave velocity and therefore earlier wave reflection.
Aim: The aim of this study was to evaluate the short-term variability for measurement of surface arteries.
Method: For detection of artery wall movement, a plethysmography method was used. The changes in artery volume, affecting the fluid behind the scanning membrane, transfer themselves into pressure changes and move towards the positive input of a sensitive differential pressure transducer. The output is carried to a notebook computer and analysed within the frequency and time domain. To correlate arterial pulse waves, the following parameters were used: relative crest time RCT, interwave distance IWD, dicrotic wave amplitude DWA and dicrotic wave time DWT. These parameters were analysed using Bland-Altman plots.
Results: Two data points (5.6 %) fall outside the 2*SD range for both IWD and DWA parameters on posterior tibial artery and one data point (2.8 %) for DWT. Three data points (8.3 %) fall outside the 2*SD range for IWD and two data points for both DWA and DWT on the radial artery. Two data points fall outside the RCT measured on the ulnar artery, and all but one for IWD, DWA and DWT lie within the 2*SD range.
Conclusions: Pulse wave analysis showed reproducibility in a short-term study of all three measured distal arteries and is therefore suitable for use in patients for observing the progression of artery-wall-involving diseases.
Keywords: Pulse wave, Blood flow, Plethysmography, Arterial elasticity, Blood volume, Measurement techniques
Received: September 11, 2006; Accepted: November 11, 2006; Published: December 1, 2006 Show citation
References
- Blanc VF, Haig M, Troli M, Sauve B. Computerised photoplethysmography of the finger. Can J Aneasth 1993; 40:271278.
Go to original source...
Go to PubMed...
- Bland JM, Altman DG Statistical methods for assessing agreement between two methods of clinical measurement. Lancet 1986; 8:307310.
- Brooks B, Molyneaux L, Yue DK. Augmentation of central arterial pressure in type I diabetes mellitus. Diabetes Care 1999; 22:17221727
Go to original source...
Go to PubMed...
- Filipovsky J, Svobodova V, Pecen L. Reproducibility of radial pulse wave analysis in healthy subjects. J Hypertens 2000; 18:1033 1040.
Go to original source...
Go to PubMed...
- Guyton AC, Hall JE. Textbook of medical physiology. Guyton 9th Edition, 1996.
- Kelly R, Hayward C, Avolio A, ORourke M. Noninvasive determination of age-related changes in the human arterial pulse. Circulation 1989; 80:16521659.
Go to original source...
Go to PubMed...
- Korpas D, Hálek J. A device for non-invasive pulse wave measurement [Patent description], Prague: Czech patent office, 2003.
- Nichols WW, ORourke FM. McDonalds boold flow in arteries 4th edition. London: Arnold, 1998.
- Oliva I, Roztočil K. Pulse wave in diagnoses of lower limb ischemia disease. Prague: Avicenum, 1982.
- Peňáz J. A device for automatic non-invasive continuous measurement of blood pressure [Patent description], Prague: Czech patent office, 1989.
- Savage MT, Ferro CJ, Pinder JS. Reproducibility of derived central arterial waveforms in patients with chronic renal failure. Clinical Science 2002; 103:5965.
Go to original source...
Go to PubMed...
- Schurmann M, Zaspel J, Gradl G. Assessment of the peripheral microcirculation isung computer-assisted venous congestion plethysmographyin post-traumatic complex regional pain syndrome type I. J Vasc Res 2001; 38:453461.
Go to original source...
Go to PubMed...
- Vaitkevicius PV, Fleg JL, Engel JH, OConnor FC, Wright JG, Lakatta LE, Yin FC. Effects of age and aerobic capacity on arterial stiffness in healthy adults. Circulation 1993; 88:14561462.
Go to original source...
Go to PubMed...
- Wilkinson IB, MacCallum H, Flint L, Cockcroft JR, Newby DE, Webb DJ. The influence of heart rate on augmentation index and central arterial pressure in humans. J Physiol 2000; 525:263 270.
Go to original source...
Go to PubMed...