Pilot investigation of photoplethysmographic signals and blood oxygen saturation values during blood pressure cuff-induced hypoperfusion

Article English OPEN
Kyriacou, P. A. ; Shafqat, K. ; Pal, S. K. (2009)

Photoplethysmography (PPG) is a non-invasive electro-optical technique widely used in the monitoring of the pulsations associated with changes in blood volume in a peripheral vascular bed. The technique is based on the absorption properties of vascular tissue when it is transilluminated by light. Photoplethysmography is also used in the estimation of arterial blood oxygen saturation (SpO2) by pulse oximetry where the technique relies on the presence of adequate peripheral arterial pulsations. The aim of this study was to investigate (14 healthy volunteers) the effect of pressure cuff-induced hypoperfusion on PPG signals and SpO2s using a custom made finger blood oxygen saturation PPG/SpO2 sensor and a commercial finger pulse oximeter. PPG signals with high signal-to-noise ratios were obtained from all induced pressures prior to full brachial occlusion. An Analysis of Variance (ANOVA) on ranks showed that there are statistically significant differences (p<0.05) between the PPGs in the low pressures (0–80 mmHg) than those in the upper pressures (90–150 mmHg). Both pulse oximeters showed gradual decrease of saturations during induced hypoperfusion which demonstrate the direct relation between blood volumes (PPG amplitudes), arterial vessel stenosis and blood oxygen saturation. The custom made pulse oximeter was found to be more sensitive to SpO2 changes than the commercial pulse oximeter especially at high occluding pressures.
  • References (16)
    16 references, page 1 of 2

    [1] A.V.J. Challoner, Photoelectric Plethysmography for Estimating Cutaneous Blood Flow, Academic Press, New York, 1997.

    [2] J.C. Dorlas, J.A. Nijboer, Photo-electric plethysmography as a monitoring device in anaesthesia, Application and Interpretation, British Journal of Anaesthesia 57 (1985) 524-530.

    [3] J.L. Higgins, A. Fronek, Photoplethysmographic evaluation of the relationship between skin reflectance and blood volume, Journal of Biomedical Engineering 8 (1986) 130-136.

    [4] L.G. Lindberg, P.A. Oberg, Photoplethysmography Part 2: influence of light source wavelength, Medical & Biological Engineering & Computing 29 (1991) 48-54.

    [5] J.A. Nijboer, J.C. Dorlas, H.F. Mahieu, Photoelectric plethysmographysome fundamental aspects of the reflection and transmission method, Clinical Physics and Physiological Measurement 2 (1981) 205-215.

    [6] V.C. Roberts, Photoplethysmography - fundamental aspects of the optical properties of blood in motion, Transactions of the Institute of Measurement and Control 4 (1982) 101-106.

    [7] J. Allen, C.P. Oates, T.A. Lees, A. Murray, Photoplethysmography detection of lower limb peripheral arterial occlusive disease: a comparison of pulse timing, amplitude and shape characteristics, Physiological Measurement 26 (2005) 811-821.

    [8] J. Allen, Photoplethysmography and its application in clinical physiological measurement, Physiological Measurement 28 (2007) R1-R39.

    [9] Y. Mendelson, B.D. Ochs, Noninvasive pulse oximetry utilizing skin reflectance photoplethysmography, IEEE Transactions on Biomedical Engineering 35 (1988) 798-805.

    [10] D.G. Clayton, R.K. Webb, A.C. Ralston, D. Duthie, W.B. Runciman, A comparison of the performance of 20 pulse oximeters under conditions of poor perfusion, Anaesthesia 46 (1991) 3-10.

  • Similar Research Results (1)
  • Metrics
    views in OpenAIRE
    views in local repository
    downloads in local repository

    The information is available from the following content providers:

    From Number Of Views Number Of Downloads
    City Research Online - IRUS-UK 0 50
Share - Bookmark