Respiratory

Flow limitation without arousal

Flattened inspiration that on its own does not meet criteria for a scored respiratory event.

Educational reference, not a diagnostic tool. A scored event, an elevated index and a clinical diagnosis are different things. Follow your facility’s scoring manual, notification policies and clinical protocols.

Flattened inspiration alone is not automatically a scored respiratory event.
Look for the 20% peak reduction and whether a desaturation or arousal follows.
Without either consequence, apnea, hypopnea and RERA criteria are not met.

Waveforms

Flow limitation without arousal

reviewed

Respiratory

Synthetic adult PSG teaching tracing showing 16 seconds of flattened airflow with a 20% peak reduction, no desaturation and no arousal. — Illustrative teaching waveformFlattened inspiration alone is not automatically a scored respiratory event.Source: Original synthetic teaching signals. Not patient data. Not a diagnostic tracing.