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5-3-3. 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.
Preparation
(1) Connect the PPG probe to the main unit, and
turn it on.
Note: With the PGV-20 probe, set the PPG/PV mode
switch to the PPG mode beforehand.
(2) Press Enter button to display MENU and make
sure MODE is on AC mode. If it's been set for
DC mode, press Enter on MODE to change to
AC.
Press Left to get out of the MENU mode.
(3) Check that the face of the PPG sensor is free of
stains. Clean it if necessary.
(4) Make certain that room temperature is
comfortable and, especially, that the skin
surface where the probe is to be mounted is
warm. Cold constricts superficial blood vessels
and thus jeopardizes the accuracy of PPG
measurements.
Power button
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