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Recognition accuracy of current operating room alarms
R G Loeb1, B R Jones, R A Leonard
1Department of Anesthesiology, University of California, Davis, Medical Center, Sacramento 95817.
Anesthesia and Analgesia
|October 1, 1992
Summary
Anesthesia clinicians struggle to identify operating room alarms by sound alone. Alarm recognition accuracy was low, with important alarms being less recognizable.
Area of Science:
- Anesthesiology
- Biomedical Engineering
- Human Factors Engineering
Background:
- Operating room alarms are critical for patient safety.
- Effective alarm identification by clinicians is essential for timely intervention.
Purpose of the Study:
- To assess anesthesia clinicians' ability to recognize operating room alarms by sound.
- To identify factors influencing alarm recognition accuracy.
Main Methods:
- Prospective study involving 44 anesthesia clinicians.
- Recorded sounds from 19 alarms on 15 common devices.
- Clinicians identified alarm sources and rated alarm importance and frequency.
Main Results:
- Clinicians correctly identified alarm sources only 34% of the time.
- Higher recognition for frequently heard alarms; lower recognition for more important alarms.
- Errors often due to similar alarm sounds or device functions.
Conclusions:
- Anesthesia clinicians cannot reliably identify operating room alarms by sound.
- Current alarm systems may pose a risk due to poor auditory recognition.