STUDY OF THE DYNAMICS OF THE LUNG-THORAX SYSTEM.

Abstract

The objectives s of the research were to study and define the factors which govern the motion of the thoraco-abdominal system and which contribute to the total opposition to ventilation of the lungs. A summary of the experimental program is presented. Topics include: (1) Early experiments; (2) Studies using analog computers; (3) Critical tracheal volume-flow in dogs and infants; (4) Atrial and esophageal pressure measurements in forced respiration; (5) Mechanical aspects of panting as a respiratory maneuver; (6) Respiratory dynamic resistance; (7) Evaluation of the equation of motion of the respiratory system; (8) Interpretation of respiratory pressure-volume Lissajous figures; (9) Changes of thoraco-abdominal resonant frequency with driving pressure; and (10) Status of research at time of this report.

Document Details

Document Type
Technical Report
Publication Date
May 15, 1964
Accession Number
AD0606521

Entities

People

  • E. Croft Long
  • Wayland E. Hull

Organizations

  • Duke University

Tags

DTIC Thesaurus Topics

  • Analog Computers
  • Computers
  • Dynamics
  • Equations
  • Frequency
  • Maneuvers
  • Measurement
  • Pressure Measurement
  • Resistance
  • Resonant Frequency
  • Respiration
  • Respiratory System
  • Test And Evaluation
  • Ventilation

Readers

  • Cardiovascular Physiology
  • Control Systems Engineering.
  • Theoretical Analysis.