Innovative Technologies
What is Audible Cue?
Improve manual ventilation and CPR with ETCO2 Audible Cue
ETCO2 Audible Cue helps the caregiver manage ETCO2 during manual ventilation and CPR by delivering 5 different, easily recognizable sounds to indicate 5 ranges from high to low ETCO2. Audible Cue provides the caregiver with instant feedback about ETCO2 level changes without needing to look at the monitor.
The following figure shows the results of a study comparing manual ventilation with no capnometric monitoring and with capnometric monitoring with and without Audible Cue.1
1 Miyasaka K et al. Audible capnometric cues facilitate targeted control of end-tidal carbon dioxide during manual ventilation. Annual meeting of American Society of Anesthesiologists. 2013;A1185.
Audible cue delivers 5 different, easily recognizable sounds to indicate the ETCO2 range.
The audible cue makes sounds in 5 different patterns. TRY! Listen to the sound: Click 
| Primarily designed for | ETCO2 range* [mmHg] |
Audible Cue sound type <click to enlarge> |
Audible Cue sound design <click to enlarge> |
Example of situation | |
| Manual ventilation and ROSC confirmation | 45≤ (High) |
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・Hypoventilation is caused by insufficient manual ventilation during transport ・ROSC is achived* |
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| 35 - 44 (Normal) |
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Ventilation is sufficient |
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| 20 - 34 (Low 1) |
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Hyperventilation is caused by over aggressive manual ventilation during transport |
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| CPR (chest compression) | 10 - 19 (Low 2) |
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High quality chest compressions are achieved |
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| ≤9 (Low 3) |
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Quality of effectiveness of chest compression may need improvement |
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