Presentation
13 March 2024 Blood pressure estimation using near-infrared spectroscopy (NIRS)
Author Affiliations +
Abstract
Oscillometric techniques are the established standard for non-invasively determining blood pressure. Several algorithms exist for translating oscillometric cardiac waveforms to blood pressure values. These algorithms utilize features of the oscillometric blood pressure waveform to extract systolic and diastolic pressures. Though validated empirically, these features remain contested and are somewhat detached from physiology. The accuracy of current algorithms therefore varies on a patient-to-patient basis and especially declines in non-normotensive patients. We propose an alternative technique based on the assertion that, during cuff deflation following arm occlusion, reperfusion begins when cuff pressure equals systolic pressure. This reperfusion process manifests in relative oxyhemoglobin changes (∆HbO). We measure these changes via near-infrared spectroscopy (NIRS) and show that they produce a more accurate estimate of systolic pressure than existing oscillometric methods.
Conference Presentation
© (2024) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
William B. Scammon, Jason Yang, Rohan M. Goswami M.D., and Jana M. Kainerstorfer "Blood pressure estimation using near-infrared spectroscopy (NIRS)", Proc. SPIE PC12841, Dynamics and Fluctuations in Biomedical Photonics XXI, PC128410G (13 March 2024); https://doi.org/10.1117/12.3003403
Advertisement
Advertisement
KEYWORDS
Near infrared spectroscopy

Blood pressure

Blood circulation

Blood

Heart

Hemodynamics

Oxygenation

Back to Top