A QUANTITATIVE IMPEDANCE PNEUMOGRAPH

Abstract

The report describes an impedance pneumograph capable of measuring quantitatively respiratory volumes. Features of this system include the use of a higher frequency (300 KHz) excitation voltage than is normally used in impedance pneumography and the use of pasteless electrodes which are insulated from the subject by a layer of polyethylene, thus forming a capacitive coupling of the electrodes to the subject and eliminating the problems associated with skin-to-electrode impedance changes. A near perfect empiric correlation was found to exist between the transthoracic impedance measured by this device and pulmonary volume.

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Document Details

Document Type
Technical Report
Publication Date
Nov 10, 1966
Accession Number
AD0643687

Entities

People

  • George E. Bergey
  • Russell D. Squires
  • William A. Hamilton
  • William C. Sipple

Organizations

  • Naval Air Warfare Center Warminster

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Accuracy
  • Blood Volume
  • Classification
  • Couplings
  • Dielectric Polymers
  • Electrodes
  • Frequency
  • Impedance
  • Maneuvers
  • Materials
  • Measurement
  • Respiration
  • Respiratory Physiological Phenomena
  • Security
  • Standards
  • Telemetry
  • Thorax

Readers

  • Brain and Cognitive Science; Experimental Psychology; Cognitive Neuroscience
  • Cardiovascular Physiology
  • Electrical Engineering

Technology Areas

  • Microelectronics