The Validity of Strain Gauge Plethysmography

Abstract

A unique possibility of testing the validity of the strain gauge plethysmograph was found in regional perfusion of the human limb. It was possible to vary the inflow of the limb and at the same time record the peripheral flow with a strain gauge plethysmograph on the calf. A linear relation between inflow and plethysmographic recorded flow was found, confirming the validity of the strain gauge plethysmograph.