Autoregressive Modeling of the Photoplethysmogram AC Signal Amplitude Changes after Flow-Mediated Dilation in Healthy and Diabetic Subjects

Amiri, Mina; Zahedi, Edmond; Behnia, Fereydoun

doi:10.22041/ijbme.2013.13083

Document Type : Technical note

Authors

¹ M.Sc, Department of Electrical Engineering, Sharif University of Technology

² Associate Professor, Department of Electrical Engineering, Sharif University of Technology, Tehran. Department of Electrical, Electronics and Systems Engineering, Faculty of Engineering and Built Environment, National University Malaysia

³ Assistant Professor, Department of Electrical Engineering, Sharif University of Technology

10.22041/ijbme.2013.13083

Abstract

It is proved that the endothelial (artery inner lumen cells) function is associated with cardiovascular risk factors. Among all the common non-invasive methods employed in the research setting for assessing endothelial function, flow-mediated dilation is the most widely used one. This technique measures endothelial function by inducing reactive hyperemia using temporary arterial occlusion and measuring the resultant relative increase in blood vessel diameter via ultrasound. In this paper, the limitations associated with the ultrasound technique are overcome by using the photoplethysmogram (PPG) signal recorded during FMD. The correctness of this approach is investigated by modeling the AC changes of PPG after FMD by a 2nd order autoregressive model. A sensitivity of 78.6%, specificity of 81.6% and total accuracy of 80% were achieved in classification of 16 healthy and 14 diabetic subjects.

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Main Subjects

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Iranian Journal of Biomedical Engineering

Autoregressive Modeling of the Photoplethysmogram AC Signal Amplitude Changes after Flow-Mediated Dilation in Healthy and Diabetic Subjects

References

References

Volume 7, Issue 1 - Serial Number 1
June 2013
Pages 85-95

Autoregressive Modeling of the Photoplethysmogram AC Signal Amplitude Changes after Flow-Mediated Dilation in Healthy and Diabetic Subjects

References

References

Volume 7, Issue 1 - Serial Number 1June 2013Pages 85-95

Volume 7, Issue 1 - Serial Number 1
June 2013
Pages 85-95