Repeatability of sites of sleep-induced upper airway obstruction. A 2-night study based on recordings of airway pressure and flow

Rollheim, Jan; Tvinnereim, Magne; Sitek, Jan; Osnes, Terje

doi:10.1007/s004050100330

Cited by 22 publications

(16 citation statements)

References 18 publications

(19 reference statements)

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“…These results suggest that the AG systems provide the possibility of studying the features of obstruction in short daytime and nocturnal sleep. It is similar to the results of previous study that overnight continuous recording of airway pressure and flow is a relatively new good method for measuring apneic and hypopneic events [4,12]. The main findings of the present study indicate that there was no significant difference between dAG and nAG with regard to the main indices of sleep disorder events (AHI, AI, CAHI, MAHI, OAHI).…”

Section: Discussionsupporting

confidence: 93%

“…But all these methods are controversial for correlating poorly with collapse observed during sleep. The need for an alternative diagnostic tool that can be used to identify the exact location of the airway obstruction led to the development of the ApneaGraph (AG) [4,5]. The AG200 ApneaGraph system (MRA Medical, UK) is a new method for diagnosing obstructive sleep-related breathing disorders (SRDB) and identifying sites of obstruction [6].…”

Section: Introductionmentioning

confidence: 99%

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Short daytime ApneaGraph for initial case selection of obstructive sleep apnea–hypopnea syndrome before surgery

Huo

et al. 2011

Eur Arch Otorhinolaryngol

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The aim of this study was to determine whether the 2-h daytime ApneaGraph (dAG) for patients with obstructive sleep apnea-hypopnea syndrome (OSAHS) can be used initially to diagnose and identify the site of obstruction before surgery. Fifty patients with OSAHS diagnosed by polysomnogram were enrolled in this prospective study. Sleep-related parameters, which include the indices for apnea-hypopnea (AHI), apnea index (AI), obstructive, central and mixed AHI (OAHI, CAHI and MAHI, respectively), the lowest oxygen saturation (LSaO₂) and the proportion of upper and lower airway obstruction (UPPER and LOWER, respectively), were measured by both daytime and nocturnal AG (nAG). Different operative techniques were used according to the obstruction site assessed by the nAG. Clinical outcomes were assessed with the Epworth Sleepiness Scale (ESS), visual analog scale (VAS), AI, AHI and LSaO₂. All the indices except LSaO₂ found no significant differences between dAG and nAG; there were significant positive correlations with regard to most indices, but not for CAHI between dAG and nAG. When compared dAG with nAG, most moderate and severe patients had predominant sites of obstructions in the upper level. Postoperative ESS, VAS, AI and AHI decreased significantly, while LSaO₂ significantly increased compared with those preoperative counterparts. dAG may be used as an alternative means for early and low-cost diagnostic evaluation of OSAHS before surgery.

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Section: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Short daytime ApneaGraph for initial case selection of obstructive sleep apnea–hypopnea syndrome before surgery

Huo

et al. 2011

Eur Arch Otorhinolaryngol

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“…The diagnosis of the type of obstruction as well as the localization of the predominant site of narrowing may be critical in determining the appropriate treatment of these patients. Some of the disappointing results that have been reported after sleep-related surgeries in patients with obstructive sleep apnea syndrome (OSAS) may be due to a lack of reliable methods for localization of the functionally relevant upper airway narrowing [1][2][3][4] . Over recent years, there is an increased requirement for an innovative outpatient sleep diagnostic tool, which should be similar to a polysom-nography (PSG) sleep study and help to localize the level of the upper airway obstruction in patients suffering from SRBD.…”

Section: Introductionmentioning

confidence: 99%

Polysomnography and ApneaGraph® in Patients with Sleep-Related Breathing Disorders

Divo

Selivanova²,

Mewes³

et al. 2008

ORL

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Purpose: To evaluate whether ApneaGraph (AG) and polysomnography (PSG) deliver comparable results in patients with sleep-related breathing disorders. Procedures: A prospective study was performed, which included 14 patients with obstructive sleep apnea syndrome. Apnea-hypopnea index (AHI), hypopnea index (HI), apnea index (AI), obstructive, central and mixed apnea, oxygen saturation (SaO₂), pulse and body position were simultaneously assessed by PSG and AG in each individual. Results: There was a good correlation between measurements of AG and PSG for AHI, pulse, SaO₂, body position and central apnea. However, our study showed differences between PSG and AG for AI (p = 0.002), HI (p = 0.013), mixed apnea (p = 0.003) and obstructive apnea (p = 0.013). AG indicated that 2/14 patients had a pure upper airway obstruction, 6/14 patients had a predominance of lower obstruction and 6/14 patients had a predominance of upper obstruction. Conclusion: AG provides comparable results for AHI, pulse, SaO₂, body position and central apnea when compared to PSG, but not for the rest of the measurements. Using AG, the distribution of sites of obstructive events could be identified in this study in all of the patients.

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“…Previous studies have reported that the use of continuous airway pressure and flow monitoring is reproducible [16], and that AG and polysomnography are not significantly different for measuring the AHI, the total number of apneic events, ASaO 2 , and LSaO 2 [17]. We used the following definitions of OSAHS: mild, AHI ≥5 and ≤15; moderate, AHI >15 and ≤30; and severe, AHI >30.…”

Section: Ag Pressure Measurementsmentioning

confidence: 99%

Endoscopic upper airway evaluation in obstructive sleep apnea: Mueller’s maneuver versus simulation of snoring

Huo

et al. 2014

Sleep Breath

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Repeatability of sites of sleep-induced upper airway obstruction. A 2-night study based on recordings of airway pressure and flow

Cited by 22 publications

References 18 publications

Short daytime ApneaGraph for initial case selection of obstructive sleep apnea–hypopnea syndrome before surgery

Short daytime ApneaGraph for initial case selection of obstructive sleep apnea–hypopnea syndrome before surgery

Polysomnography and ApneaGraph® in Patients with Sleep-Related Breathing Disorders

Endoscopic upper airway evaluation in obstructive sleep apnea: Mueller’s maneuver versus simulation of snoring

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