Da Rosa, "The cyclic alternating pattern demonstrates increased sleep instability and correlates with fatigue and sleepiness in adults with upper airway resistance syndrome
," Sleep, vol.
Since upper airway resistance syndrome
may require state-of-the-art technology for its detection, sleep-disordered breathing often remains undetected and hence ignored.
Jane began to suffer Upper Airway Resistance Syndrome
(UARS) - similar to sleep apnoea - which put her in danger of dying every night.
Differences in clinical features of upper airway resistance syndrome
, primary snoring, and obstructive sleep apnea/ hypopnea syndrome.
Upper airway resistance syndrome
(UARS) is characterized by an increase in the amount of work that is required to breathe during sleep in order to overcome the elevated airway resistance.
A45 -year-old man underwent uvulopalatopharyngoplasty (UPPP) to correct upper airway resistance syndrome
and heavy snoring, both of which were confirmed by a sleep study.
It must be emphasized, however, that patients with an RDI of less than 20 and patients with upper airway resistance syndrome
can experience significant sleep fragmentation and excessive daytime sleepiness; therefore, treatment should be considered.
The most important aspect of ensuring reimbursement for the evaluation and treatment of obstructive sleep apnea (OSA) or upper airway resistance syndrome
(UARS) is to predetermine whether the anticipated tests and procedures are covered services.
The identification of this group resulted in the recognition of a new syndrome, intermediate between primary snoring and OSAS, called upper airway resistance syndrome
.  Patients with this syndrome benefit from appropriate treatment.
Basing a diagnosis of obstructive sleep apnea (OSA) and its milder form, upper airway resistance syndrome
(UARS), solely on a history of loud snoring is similar to diagnosing myocardial ischemia solely on a history of chest pain.
Recording snoring sounds is helpful in identifying apneas and in diagnosing upper airway resistance syndrome
. Computer analysis of audiotaped snoring can accurately identify an apnea,  but it is less accurate in distinguishing obstructive, mixed, and central events, and it cannot accurately identify a hypopnea.