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The Extensometer. Potential applications in anaesthesia and intensive care
J R Brimacombe1, A G MacFie, A McCrirrick
1Department of Anaesthetics, Royal Perth Hospital, Western Australia.
Anaesthesia
|September 1, 1991
Summary
A novel Extensometer device accurately measures length changes on curved surfaces. This innovation offers significant potential for respiratory monitoring and ventilatory pattern analysis in clinical settings.
Area of Science:
- Biomedical Engineering
- Medical Devices
- Respiratory Physiology
Background:
- Accurate measurement of chest and abdominal wall motion is crucial for respiratory monitoring.
- Existing methods may have limitations in continuous, rapid, or convex surface measurements.
- The need for advanced instrumentation in anesthesia and intensive care settings is ongoing.
Purpose of the Study:
- To introduce and describe the principles of a new Extensometer device.
- To evaluate the performance and clinical utility of the Extensometer.
- To explore the potential applications of the Extensometer in respiratory monitoring.
Main Methods:
- Laboratory testing to assess the linearity and response rate of the Extensometer.
- Clinical assessment in anesthetized patients to quantify chest and abdominal wall movement.
- Evaluation of the device's capability for continuous length measurement over convex surfaces.
Main Results:
- The Extensometer demonstrated a linear response in laboratory tests.
- The device successfully quantified abdominal and chest wall movements in anesthetized patients.
- The Extensometer exhibits a rapid response rate suitable for dynamic measurements.
Conclusions:
- The Extensometer is a promising new tool for continuous, accurate length measurement on convex surfaces.
- Its rapid response and accuracy make it valuable for research and clinical applications, especially in respiratory monitoring.
- Potential applications include ventilatory pattern analysis and enhanced patient monitoring during anesthesia and intensive care.