A videoendoscopic evaluation of the upper airway in South East Asian adults with obstructive sleep apnea

Abdullah, Baharudin; Rajet, Khairul Azhar M.; Hamid, Suzina Sheikh; Mohammad, Wan Mohd Zahiruddin Wan

doi:10.1007/s11325-010-0431-7

Cited by 10 publications

(9 citation statements)

References 24 publications

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“…In contrast, a study of 57 patients using endoscopy and catheter combined with nasal airway positive pressure and muscle paralysis found that a majority of obstruction occurred in the velopharynx 9. A study of 59 patients using flexible nasopharyngoscopy in seated erect and supine position showed that 49.2% had retropalatal obstruction and 38.9% had both retropalatal and retroglossal obstruction 21. There was a study using fiberoptic nasopharyngoscopy that enrolled 248 patients and showed that four basic patterns of TB narrowing occurred in awake adult patients diagnosed with OSA: high TB type (8.9%), high TB with retroepiglottic narrowing type (15.3%), diffuse TB narrowing type (31.9%), and isolated retroepiglottic narrowing type (41.9%) 22.…”

Section: Discussionmentioning

confidence: 96%

Analysis of upper airway obstruction by sleep videofluoroscopy in obstructive sleep apnea

et al. 2011

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Section: Discussionmentioning

confidence: 96%

Analysis of upper airway obstruction by sleep videofluoroscopy in obstructive sleep apnea

et al. 2011

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“…Surgery is more likely [7] performed the first endoscopic evaluation of dynamic changes of the pharynx with MM in awake patients with OSAHS. In addition to static narrowing, dynamic narrowing of the retropalatal and retroglossal regions contributes to the pathophysiology of OSAHS [19]. FNMM is widely used to evaluate the UA before surgery to improve patient selection and predict outcome and postoperative changes in the UA [8,9].…”

Section: Discussionmentioning

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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“…Many studies showed that the upper airway collapse at multiple levels in different degrees contributed to the overall resistance of the upper airway in OSAHS [41][42][43][44][45] . We also observed the hypertrophy of corpus linguae in 15 patients with severe OSAHS and 4 patients with mild-moderate OSAHS.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of airway obstruction at soft palate level in male patients with obstructive sleep apnea/hypopnea syndrome: Dynamic 3-dimensional CT imaging of upper airway

Xiao

Xiong

Shi

et al. 2011

J. Huazhong Univ. Sci. Technol. [Med. Sci.]

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This study examined the dynamic characteristics of upper airway collapse at soft palate level in patients with obstructive sleep apnea/hypopnea syndrome (OSAHS) by using dynamic 3-Dimensional (3-D) CT imaging. A total of 41 male patients who presented with 2 of the following symptoms, i.e., daytime sleepiness and fatigue, frequent snoring, and apnea with witness, were diagnosed as having OSAHS. They underwent full-night polysomnography and then dynamic 3-D CT imaging of the upper airway during quiet breathing and in Muller's maneuver. The soft palate length (SPL), the minimal cross-sectional area of the retropalatal region (mXSA-RP), and the vertical distance from the hard palate to the upper posterior part of the hyoid (hhL) were compared between the two breathing states. These parameters, together with hard palate length (HPL), were also compared between mild/moderate and severe OSAHS groups. Association of these parameters with the severity of OSAHS [as reflected by apnea hypopnea index (AHI) and the lowest saturation of blood oxygen (LSaO(2))] was examined. The results showed that 31 patients had severe OSAHS, and 10 mild/moderate OSAHS. All the patients had airway obstruction at soft palate level. mXSA-RP was significantly decreased and SPL remarkably increased during Muller's maneuver as compared with the quiet breathing state. There were no significant differences in these airway parameters (except the position of the hyoid bone) between severe and mild/moderate OSAHS groups. And no significant correlation between these airway parameters and the severity of OSAHS was found. The position of hyoid was lower in the severe OSAHS group than in the mild/moderate OSAHS group. The patients in group with body mass index (BMI)≥26 had higher collapse ratio of mXSA-RP, greater neck circumference and smaller mXSA-RP in the Muller's maneuver than those in group with BMI<26 (P<0.05 for all). It was concluded that dynamic 3-D CT imaging could dynamically show the upper airway changes at soft palate level in OSAHS patients. All the OSAHS patients had airway obstruction of various degrees at soft palate level. But no correlation was observed between the airway change at soft palate level and the severity of OSAHS. The patients in group with BMI≥26 were more likely to develop airway obstruction at soft palate level than those with BMI<26.

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A videoendoscopic evaluation of the upper airway in South East Asian adults with obstructive sleep apnea

Cited by 10 publications

References 24 publications

Analysis of upper airway obstruction by sleep videofluoroscopy in obstructive sleep apnea

Analysis of upper airway obstruction by sleep videofluoroscopy in obstructive sleep apnea

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

Evaluation of airway obstruction at soft palate level in male patients with obstructive sleep apnea/hypopnea syndrome: Dynamic 3-dimensional CT imaging of upper airway

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