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

Zahedi, E ; Sharif University of Technology | 2015

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  1. Type of Document: Article
  2. DOI: 10.1260/2040-2295.6.1.121
  3. Publisher: Multi-Science Publishing Co. Ltd , 2015
  4. Abstract:
  5. 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
  6. Keywords:
  7. Central blood pressure ; Dynamic linear model ; System identification ; Identification (control systems) ; Religious buildings ; Auto regressive models ; Central blood pressure waveforms ; Coefficient of variation ; Industry standards ; Radial photoplethsymography ; System identification techniques ; Blood pressure ; Adult ; Applanation tonometer ; Artery compliance ; Artery diameter ; Autoregulation ; Cardiovascular risk ; Controlled study ; Experimental study ; Feasibility study ; Heart left ventricle contraction ; Human experiment ; Mean arterial pressure ; Normal human ; Photoplethysmogram ; Physical activity ; Plethysmography ; Pulse pressure ; Pulse wave ; signal processing ; Biological model ; Blood pressure measurement ; Photoelectric plethysmography ; Physiology ; Procedures ; Reproducibility ; Blood Pressure Determination ; Feasibility Studies ; Humans ; Male ; Models, Cardiovascular ; Photoplethysmography ; Radial Artery ; Reproducibility of Results ; Signal Processing, Computer-Assisted ; Wrist
  8. Source: Journal of Healthcare Engineering ; Volume 6, Issue 1 , 2015 , Pages 121-144 ; 20402295 (ISSN)
  9. URL: https://www.hindawi.com/journals/jhe/2015/390237/abs