One of the mysteries of the English language finally explained.
An instrument for recording and measuring variation in the volume of a part of the body, especially as caused by changes in blood pressure.
- ‘Lung volumes were measured in a whole-body plethysmograph, and data were expressed as a percent of the predicted values published by Goldman and Becklake.’
- ‘Hulskamp and coworkers measured lung volume with a new plethysmograph in 32 healthy infants.’
- ‘Lennox and coworkers found that drift of an inductive plethysmography signal was only 22% of the drift arising from changes in temperature within a body plethysmograph.’
- ‘Functional respiratory variables in the animal models were measured with a double-chamber plethysmograph as described.’
- ‘Thus, the flows estimated in a body plethysmograph may not be fully available to the flow-limited subject.’
Late 19th century: from Greek plēthusmos ‘enlargement’ (based on plēthus ‘fullness’) + -graph.
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