Where is uars

Here we hope to answer these questions and more. Snoring is the sound created when air flows past loose or relaxed tissues in the throat, which causes the tissues to vibrate and thus creates an irritating sound. Snoring is an indication that some type of resistance is occurring in the upper respiratory system. The greater the resistance, the greater the breathing effort needed to get past the resistance.

Upper airway resistance syndrome occurs when that breathing effort crosses over from just being harmless snoring to a possibly troublesome disorder. It can be caused by a naturally narrowed air passage, loose fatty tissues of the throat collapsing back into the airway, or the position of the tongue falling back during sleep.

Patients with UARS require a greater effort in breathing to get past obstructions. Not all patients with UARS snore, and their symptoms may sound more like heavy, labored breathing during sleep. Sufferers of UARS often describe their breathing effort as "trying to breathe through a straw. Acta Paediatr.

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Support Center Support Center. External link. Please review our privacy policy. Kristo et al. Guilleminault et al. He thought the increased effort needed to breathe would be sensed by the brain and cause a subtle disturbance of sleep.

To look at effort needed to breathe during sleep, Prof Guilleminault monitored a number of people using pressure sensing tubes oesophageal balloon in passed through the nose, down in to their oesophagus during sleep. He showed that his theory was correct. People were needed to breathe harder and harder with each breath to get enough air in and this effort then caused subtle disturbance of sleep, called an arousal.

He published a number of papers describing this with one of the main papers being in the journal Chest in Throughout the s diagnosing upper airway resistance syndrome usually required using an oesophageal balloon.

Having had to sleep with one myself and also inserting many in to people being tested for upper airways resistance syndrome, they are not very comfortable. In the late s a new way of measuring airflow began to be described.

It used nasal pressure, a small pressure sensing tube in each nostril, and gave similar information to using an oesophageal ballon. This was first described in , and by the early s nasal pressure was coming in to routine use as part of sleep studies around the world. Whilst nasal pressure monitoring is routinely done in sleep studies today, not all laboratories or groups look for upper airway resistance syndrome UARS. To diagnose UARS, subtle breathing changes that cause sleep disturbance need to be scored.

These are called respiratory event related arousals RERAs , and to score them both a nasal pressure signal and a good quality EEG brain wave signal are needed. However, as discussed previously, there are other numbers to review on your sleep report:. RERAs are particularly important in diagnosing UARS as the arousals themselves cause patients to be symptomatic due to the disrupted sleep pattern. It is important to emphasize that the absence of OSA does not mean treatment is not required.

Dental sleep therapy involves the fabrication of a custom oral appliance. The appliance is worn nightly and works by maintaining the lower jaw in a more forward position. This removes the tongue and other soft tissues from the airway leading to decreased airway resistance, fewer sleep arousals, and improved sleep.