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Updated: Aug 10, 2026

Combining Volumetric Capnography And Barometric Plethysmography To Measure The Lung Structure-function Relationship
Published on: January 8, 2019
Abstract:
A variable-orifice pneumotachograph is described. It has a resistance that is relatively constant over a flow range from 0.1 to 2.5 liter/sec so it puts out a differential pressure signal that is directly proportional to flow. It is specifically designed for monitoring respirator patients and sacrifices some of the accuracy of a laminar flow (Fleisch) type device to gain greatly improved immunity to artefacts caused by airway water.
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