Non-invasive assessment of sublingual microcirculation using flow derived from green light PPG: evaluation and reference values.

ABSTRACT:

Significance

The study of sublingual microcirculation offers valuable insights into vascular changes and overcomes some limitations of peripheral microcirculation assessment. Videomicroscopy and pulse oximetry have been used to assess microcirculation, providing insights into organ perfusion beyond macrohemodynamics parameters. However, both techniques have important limitations that preclude their use in clinical practice.

Aim

To address this, we propose a non-invasive approach using photoplethysmography (PPG) to assess microcirculation.

Approach

Two experiments were performed on different samples of 31 subjects. First, multi-wavelength, finger PPG signals were compared before and while applying pressure on the sensor to determine if PPG signals could detect changes

SUBMITTER: Acevedo RU 

PROVIDER: S-EPMC10768685 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature