Photoplethysmography (Ppg) Mode - arjo HUNTLEIGH DMX Mode D'emploi

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6.1.2 Measure Doppler Pressures
Patient Preparation
Pressure measurements rely on a bulb infl ation / valve defl ation system in combination with a tube and cuff
attachment as shown below.
Brachial Systolic Pressure
Place the cuff on the upper arm approximately 1 - 2 cm above the antecubital fossa. Connect the
sphygmomanometer to the cuff .
Note: Select a cuff size appropriate for the patient's limb. Ensure that the index marker on the cuff falls
within the range marker.
• Infl ate the BP cuff by compressing the bulb of the sphygmomanometer until the pulse sound disappears
and then further infl ate by 10 – 20 mmHg.
• Gradually defl ate the cuff at a rate of about 2 – 3 mmHg/s. Note the pressure displayed on the sphyg as
soon as the Doppler signal is heard.
• For best results, keep the probe as still as possible after the optimum position has been found.
Ankle Systolic Pressure
6.2

Photoplethysmography (PPG) Mode

An arterial PPG probe is available for arm, ankle and toe systolic pressures and PPG waveforms.The
PPG probe is attached to the arm, ankle or toe as appropriate, and uses infra-red light to make a relative
measurement to detect the return of bloodfl ow.
• Palpate the artery.
• Apply a liberal amount of ultrasound gel.
• Place the probe over the vessel at an angle of 45°.
• Move the probe laterally across the limb to locate
the strongest audio signal.
• Place the appropriately sized cuff
1-3 cm above the lateral malleolus
• Connect the sphygmomanometer to the cuff
• Repeat the infl ation procedure described above,
but this time monitor the desired foot artery
(e.g. Posterior Tibial shown).