Comment on 'New photoplethysmogram indicators for improving cuffless and continuous blood pressure estimation accuracy'.
SourcePhysiological Measurement, 39, 9, (2018), pp. 098001
Article / Letter to editor
Display more detailsDisplay less details
SubjectRadboudumc 18: Healthcare improvement science RIHS: Radboud Institute for Health Sciences
OBJECTIVE: A recent study investigated the potential utility of new photoplethysmogram (PPG) indicators to improve cuffless continuous blood pressure (BP) measurement. APPROACH: In this Comment we provide additional discussion of the physiology underlying PPG- and pulse arrival time (PAT)-based BP measurement. We also discuss validation of these measurements. MAIN RESULTS: Changes in PPG features and PAT can occur independently of BP. Any study validating BP measurement based on PPG features or PAT should include a variety of calibration independent physiological challenges affecting BP. SIGNIFICANCE: PPG/PAT-based BP measurement has been investigated extensively as an alternative to cuff-based BP measurement. We feel the inherent physiological confounding in PPG/PAT-based measurement makes it unlikely that it will be of clinical value.
Upload full text