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The Ohmeda Rascal II. A new gas analyser for anaesthetic use
G G Lockwood1, M J Landon, M K Chakrabarti
1Hammersmith Hospital, London.
Anaesthesia
|January 1, 1994
Summary
The Ohmeda Rascal II is a multigas analyzer and pulse oximeter for anesthesia. It uses laser Raman scattering to accurately measure anesthetic gases, offering fast response times and reliable performance for clinical and research applications.
Area of Science:
- Anesthesiology
- Medical instrumentation
- Analytical chemistry
Background:
- The Ohmeda Rascal II is a dedicated device for anesthetic monitoring.
- Accurate measurement of anesthetic gases is crucial for patient safety.
Purpose of the Study:
- To evaluate the Ohmeda Rascal II multigas analyzer and pulse oximeter.
- To assess its suitability for clinical and research use in anesthesia.
Main Methods:
- Utilizes Raman scattering of laser light for gas identification and quantification.
- Measures oxygen, nitrogen, carbon dioxide, nitrous oxide, and volatile anesthetic agents.
- Evaluates response times, linearity, and calibration stability.
Main Results:
- Demonstrates response times equal to or better than existing infrared or photo-acoustic devices.
- Exhibits linearity within clinical ranges for all measured gases and vapors.
- Requires no maintenance and holds calibration well.
Conclusions:
- The Ohmeda Rascal II is a simple-to-use, reliable multigas analyzer and pulse oximeter.
- Its performance makes it suitable for both clinical anesthesia monitoring and research applications.