What do cleft marks on capnography typically indicate?

Cleft marks on capnography typically indicate that there is a problem with the airflow, which can be caused by the patient choking. The presence of these marks suggests that there are interruptions in the exhaled CO2 levels, often due to a blockage in the airway. This can correlate with the patient's inability to exhale properly, making choking a likely scenario.

In capnography, a normal waveform reflects consistent exhalation of CO2. However, if the airway is obstructed, as with choking, the waveform may show irregularities or clefts, highlighting periods where CO2 is not effectively being exhaled. This kind of interpretation is crucial for quick decision-making in emergency settings, where identifying choking can prompt immediate interventions to secure the airway and restore normal ventilation.