Evaluation of ApneaGraph in the diagnosis of sleep-related breathing disorders

Abstract

ApneaGraph relies on measuring pressure and airXow simultaneously at diVerent levels in the pharynx identifying the segment of airway obstruction and providing baseline respiratory parameters. This study aims to evaluate ApneaGraph and correlate results with both sleep nasendoscopy and polysomnography. This was a prospective study of 49 patients with snoring and/or obstructive sleep apnoea. Thirty of the these patients underwent a PSG and an ApneaGraph study simultaneously in the Sleep Lab. Nineteen patients attended the day surgery unit and had a sleep nasendoscopy with a 10-min ApneaGraph analysis. Polysomnography was used to validate the ApneaGraph system. There are no signiWcant diVerences (independent t test, P > 0.15) between ApneaGraph compared to Polysomnography based on the apnoea-hypopnoea index, total number of apnoeic events, average oxygen saturations and maximum desaturation. This suggests that the ApneaGraph can be used to assess OSA. Statistically, there is poor correlation between the two groups (Spearman's 0.29). In the cases of discordance, ApneaGraph places greater emphasis on a lower pharyngeal contribution. This unique study analyses the ApneaGraph system in the diagnosis of obstructive sleep apnoea and snoring. It demonstrates the beneWts of this new system and highlights certain limitations in localizing the site and level of pharyngeal obstruction in patients with sleep disorders.

Diagnosing Lingual Airway Obstruction Using Nasopharyngeal Tube in OSAHS: Natural Sleep vs Induced Sleep

“…In addition to the most common oropharyngeal area, the glossopharyngeal area is a common site of obstruction [4,5]. Currently, there are many methods for diagnosing glossopharyngeal obstruction.…”

“…Currently, there are many methods for diagnosing glossopharyngeal obstruction. In addition to a series of commonly used tests while the patient is awake [3,8,9], examinations about localizing the site of obstruction during natural or induced sleep are relatively reliable [4,5,10].…”

“…Hence, it has received increasing attention in recent years. The anatomical stenosis or obstruction of the upper respiratory tract is one of the main reasons for the pathogenesis of OSAHS [3,4], and accurate determination of the location and extent of upper airway obstruction is the key for choosing the proper surgical approach and improving the therapeutic effect [5][6][7]. of methods are used to diagnose glossopharyngeal obstruction.…”

“…In addition to a series of commonly applied examinations while awake [8,9], examinations performed during natural or induced sleep are relatively accurate [4,5,10]. Nasopharyngeal tube (NPT) insertion can guarantee the responsibility of excluding the obstruction of the nasal cavity, nasopharyngeal and oropharyngeal airways.…”

Can Apneagraphy Change Our Approach in Management of Snoring and Sleep Apnoea?

“…It is a mini sleep study which can be used only for the diagnosis of sleep apnoea. This sleep study is validated against full PSG [8]. It is highly cost-effective as against PSG; it does not require a sleep technician or a sleep physician for interpretation of results.…”