Experimental feasibility study of estimation of the normalized central blood pressure waveform from radial photoplethysmogram

Edmond Zahedi, Vahid Sohani, M. A. Mohd. Ali, Kalaivani Chell, Gan Kok Beng

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The feasibility of a novel system to reliably estimate the normalized central blood pressure (CBPN) from the radial photoplethysmogram (PPG) is investigated. Right-wrist radial blood pressure and left-wrist PPG were simultaneously recorded in five different days. An industry-standard applanation tonometer was employed for recording radial blood pressure. The CBP waveform was amplitude-normalized to determine CBPN. A total of fifteen second-order autoregressive models with exogenous input were investigated using system identification techniques. Among these 15 models, the model producing the lowest coefficient of variation (CV) of the fitness during the five days was selected as the reference model. Results show that the proposed model is able to faithfully reproduce CBPN (mean fitness = 85.2% ± 2.5%) from the radial PPG for all 15 segments during the five recording days. The low CV value of 3.35% suggests a stable model valid for different recording days.

Original languageEnglish
Pages (from-to)121-144
Number of pages24
JournalJournal of Healthcare Engineering
Volume6
Issue number1
DOIs
Publication statusPublished - 1 Mar 2015

Fingerprint

Blood pressure
Feasibility Studies
Blood Pressure
Wrist
Industry
Identification (control systems)

Keywords

  • Central blood pressure
  • Dynamic linear model
  • Radial photoplethsymography
  • System identification

ASJC Scopus subject areas

  • Biomedical Engineering
  • Health Informatics
  • Biotechnology
  • Surgery

Cite this

Experimental feasibility study of estimation of the normalized central blood pressure waveform from radial photoplethysmogram. / Zahedi, Edmond; Sohani, Vahid; Mohd. Ali, M. A.; Chell, Kalaivani; Kok Beng, Gan.

In: Journal of Healthcare Engineering, Vol. 6, No. 1, 01.03.2015, p. 121-144.

Research output: Contribution to journalArticle

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