pressure plethysmograph

pres·sure ple·thys·mo·graph

1. a plethysmograph applied to part of the body, for example, a limb segment, and arranged so that volume is measured during temporary application of sufficient pressure to the part to empty its blood vessels;
2. a body plethysmograph in which changes of body volume are measured in terms of the consequent changes in air pressure in the body plethysmograph.
References in periodicals archive ?
The difference between flow and pressure plethysmographs is explored and a section on computerized PFT instruments discuss data acquisition, sampling techniques, analog to digital conversion, plus data storage and analysis.