- F -
Feeling of tiredness or weariness usually associated with performance decrements
Flexible fiberoptic scope used in the examination of nasal passages, pharynx, hypopharynx and larynx.
A disease syndrome whose primary symptoms are muscle pain and fatigue.
Number indicating the amount of airflow limitation caused by partial closure of the upper airway. 0.3 indicates an open airway, 0.15 is mildly obstructed, 0.1 is severely limited airflow, and 0.0 reflects a totally closed airway. Flattening Index is used to identify the condition known as Upper Airway Resistance Syndrome (UARS), and is continuously recorded in both diagnostic sleep studies and CPAP titrations.
The partial closure of the upper airway impeding the flow of air into the lungs.
The period of strongest clock-dependent alerting, usually in the evening. Prevents falling asleep.
Interruption of a sleep stage as a result of the appearance of a lighter stage, or to the occurrence of wakefulness, which leads to disrupted non-REM-REM sleep cycles.
Fragmentation (pertaining to Sleep Architecture)