| UARS | Upper Airway Resistance Syndrome |
| Unattended CPAP Titration Study | Sleep study that is usually performed in the home after determining that a patient has a sleep related breathing disorder such as OSA or Upper Airway Resistance Syndrome and is likely to benefit from CPAP therapy. |
| Unintended Sleep Episode | Sleep episode that is not planned and may happen during an activity in which such an episode is hazardous such as when driving a car or working with machinery. |
| Upper Airway | Part of the respiratory anatomy that includes the nose nostrils sinus passages septum turbinates; the tongue jaws hard and soft palate muscles of the tongue and throat etc. |
| UPPER AIRWAY RESISTANCE SYNDROME | A general term for obstructive sleep apnoea and heavy snoring. Used to describe the relationship between upper airway narrowing during sleep sleep disruption and the daytime consequences of excessive sleepiness. |
| Upper Airway Resistance Syndrome (UARS) | Part of the spectrum of obstructive sleep-related breathing disorders in which repetitive increases in resistance to airflow in the upper airway lead to brief arousals and daytime fatigue. Apneas and hypopneas (see RDI) may be totally absent. Blood oxygen levels can be in the normal range. |
| UPPP | Uvulopalatopharyngoplasty |
| Uvula | Small soft structure hanging from the bottom of the soft palate in the midline above the back of the tongue. |
| UVULOPALATOPHARYNGOPLASTY | Don't bother with the pronunciation - say UPPP or U-triple P instead! The operation that cuts away part of the soft palate and side wall of the pharynx (or throat) in an attempt to reduce snoring volumes. Not very effective and extremely painful. |
| Uvulopalatopharyngoplasty (UPPP) | Also abbreviated as UPP or UP3 this operation is performed on the throat to treat snoring and sleep apnea. UPPP is an accepted means of surgical treatment has a curative rate of less than 50%. Scientific evidence suggests that UPPP works best in retropalatal and combination retropalatal and retrolingual obstruction. |
