TERMIUM Plus®

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PHOTOPLETHYSMOGRAPH [1 record]

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Alphabetical list of terms

Record 1 2012-02-01

English

Subject field(s)
  • Electrodiagnosis
CONT

Photoplethysmograph. The name suggests that this device should measure volume by optical methods. In fact it is limited to detecting changes in blood perfusion in limbs and tissues. ... As arterial pulsations fill the capillary bed the changes in volume of the blood vessels modify the absorption, reflection and scattering of the light.

French

Domaine(s)
  • Électrodiagnostiques
DEF

Appareil d'exploration fonctionnelle vasculaire destiné à évaluer les variations du volume sanguin; une cellule photoélectrique mesure les différences d'éclairement subies par un rayon lumineux traversant les tissus.

Spanish

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