Affordable Access

deepdyve-link deepdyve-link
Publisher Website

Photoplethysmographic variability analysis in critical care--current progress and future challenges.

Authors
  • Chan, Gregory S H
  • Middleton, Paul M
  • Lovell, Nigel H
Type
Published Article
Journal
Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Publication Date
Jan 01, 2011
Volume
2011
Pages
5507–5510
Identifiers
DOI: 10.1109/IEMBS.2011.6091405
PMID: 22255585
Source
Medline
License
Unknown

Abstract

The concept of early goal-directed therapy emphasizes the need for early diagnosis and intervention to achieve better therapeutic outcomes in critical care. There has been rapidly growing interest in the use of the photoplethysmogram (PPG), also known as the "pulse oximetry waveform", as a noninvasive diagnostic tool in this clinical setting. The peripheral PPG exhibits beat-to-beat variability driven by physiological mechanisms such as respiration and sympathetic vascular activity. This paper provides an overview of the current progress towards the application of PPG waveform variability (PPGV) in emergency and intensive care. Studies to date have demonstrated the potential value of PPGV for assessing a range of pathophysiological conditions including blood loss, sepsis and low systemic vascular resistance. Translation of research findings into clinical practice poses several future challenges, including the need for large scale validation studies with appropriate measurement systems, more robust solutions to signal quality issues (such as motion artifacts), and better physiological understanding of the information-rich PPGV.

Report this publication

Statistics

Seen <100 times