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5-3. Photoplethysmograph
With the PG-21 and PGV-20 (PPG mode), Smartdop 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 section. For other
matters such as Cautions, Technical information and Interpretations of test result, refer to
the Operating Manual that comes with your PPG probe.
5-3-1. PPG (Photoplethysmography) Probe Assemblies
Single-channel photoplethysmography (PPG) probe
Model PG-21
Switchable dual-modality (PPG/PV) single-channel probe
Model PGV-20
5-3-2. Clinical Applications
AC Coupling: Arterial pulse waveform studies, Toe pressure
DC Coupling: Venous reflux study
To the main unit
PPG/PV
mode switch
PPG probe head
To the main unit
PPG probe head
Probe button
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