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Related Experiment Videos

Development and testing of a PC-based system with menu-driven software for evaluating lung function in ICU patients.

B Davison1, J Gumowitz, E Ingenito

  • 1Department of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, MA.

Computers in Biology and Medicine
|November 1, 1992
PubMed
Summary

This study presents a portable PC system for measuring respiratory system resistance (Rrs) and dynamic lung compliance (Cdyn) in ventilated patients. The system offers reliable, inexpensive lung mechanics measurements for intubated individuals.

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Area of Science:

  • Respiratory Physiology
  • Medical Device Engineering
  • Pulmonary Medicine

Background:

  • Mechanical ventilation is crucial for critically ill patients.
  • Accurate monitoring of lung mechanics, including respiratory system resistance (Rrs) and dynamic lung compliance (Cdyn), is essential for optimizing ventilation strategies.
  • Existing systems can be costly and lack versatility.

Purpose of the Study:

  • To describe a novel, portable PC-based system for measuring Rrs and Cdyn in intubated and mechanically ventilated patients.
  • To evaluate the system's reliability and compare it to existing methods.
  • To present an affordable and versatile alternative to current microprocessor-based ventilator systems.

Main Methods:

  • A portable PC-based system utilizing a pneumotachometer for flow measurement and a pressure catheter for airway pressure.

Related Experiment Videos

  • Software with a menu-driven interface for data collection, editing, and waveform display.
  • Calculation of Rrs and Cdyn on a breath-by-breath basis for up to ten consecutive breaths.

    • Main Results:

    • The system demonstrated reliable measurements of Rrs and Cdyn in a lung model.
    • Measurements in intubated post-operative patients yielded results comparable to established data for intubated ICU patients.
    • The system provides on-screen display, printer output, and ASCII data file storage.

    Conclusions:

    • The developed system offers reliable measurements of lung mechanics in intubated patients.
    • It represents an inexpensive and more versatile alternative to current microprocessor-based ventilator systems.
    • This technology can aid in optimizing mechanical ventilation and patient care.