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Pulse oximetry--principle and first experiences during anesthesia.
1Institute of Anesthesiology and Intensive Care, Academic Hospital, Groningen, Netherlands.
Acta Anaesthesiologica Belgica
|January 1, 1987
Summary
Pulse oximetry offers a non-invasive method for continuous oxygen saturation (SaO2) monitoring during anesthesia. This technology reliably detects decreases in SaO2 and also monitors circulation via plethysmography.
Area of Science:
- Medical Devices
- Physiological Monitoring
- Anesthesiology
Background:
- Oximetry is a photometric technique for measuring oxygen saturation (SaO2).
- Pulse oximetry specifically uses a photo-electric plethysmogram to measure SaO2 during arterial pulsations.
- Continuous monitoring of SaO2 is crucial during anesthesia.
Purpose of the Study:
- To evaluate the utility of pulse oximetry during anesthesia.
- To assess the reliability and speed of SaO2 decrease detection.
- To highlight practical advantages for patient monitoring.
Main Methods:
- Non-invasive photometric measurement of oxygen saturation (SaO2).
- Utilized photo-electric plethysmography synchronized with arterial pulsations.
- Continuous monitoring during anesthetic procedures.
Main Results:
- Pulse oximetry quickly and reliably indicated decreases in SaO2.
- The apparatus demonstrated ease and speed of connection.
- Continuous monitoring was achieved, even during periods without blood sampling.
- Plethysmography provided an additional measure of circulation.
Conclusions:
- Pulse oximetry is a valuable tool for continuous, non-invasive SaO2 monitoring in anesthesia.
- It offers rapid detection of desaturation and simultaneous circulation assessment.
- Practical advantages include ease of use and continuous data acquisition.