39
7-3. Photoplethysmograph
With the PPG probe, PG-21, Bidop senses the reflection of light from the
hemoglobin of the red blood cells in surface vessels by utilizing infrared light.
Basically, “How to use photoplethysmograph” is described in this manual. For
other matters such as Cautions, Technical information and Interpretations of
test result, refer to the Operating Manual that comes with your PPG probe.
7-3-1. PPG (Photoplethysmography) Probe Assembly
Single-channel photoplethysmography (PPG) probe
AC Coupling:
Arterial pulse waveform studies, Toe pressure
DC Coupling:
Venous reflux study
7-3-2. PPG - Arterial Pulse Waveform Studies
Purpose:
Arterial pulse waveform studies by photoplethysmography are performed to
determine the presence or absence of pulsatile flow and to assess the
state of perfusion in the tissue area immediately beneath the sensor site.
When used with a suitable cuff and manometer, the method permits the
measurement of systolic blood pressure in the fingers and toes.
Model PG-21
To the main unit
Probe Button
PPG probe head
