Decision making for position-dependent obstructive sleep apnea syndrome on the basis of patient information and physical examinations of the upper airway, acquired on an outpatient basis. (3rd June 2018)

• Record Type: Journal Article
• Authors: Endo, Minoru; Kondo, Takahito; Shimada, Rie; Tsukahara, Kiyoaki
• Is Part Of: Acta oto-laryngologica. Volume 138:Number 6(2018)
• Page Start: 562
• Page End: 566
• Publication Date: 2018-06-03
• Subjects: Position-dependent obstructive sleep apnea syndrome -- body mass index -- tongue enlargement -- palatine tonsil hypertrophy -- obstruction by Muller's maneuver -- polysomnography; Otolaryngology -- Periodicals; Ear -- Diseases -- Periodicals; Throat -- Diseases -- Periodicals; Otolaryngology -- Electronic Resources; Otorhinolaryngologic Diseases; 617.8
• DOI: 10.1080/00016489.2017.1420913
• Languages: English
• ISSNs: 0001-6489

Abstract

Abstract: Conclusions: Patients with body mass index (BMI) < 25 kg/m 2 and obstructive sleep apnea syndrome (OSAS) are highly suspicious for position-dependent OSAS. Diagnosis of position-dependent/position-independent OSAS can be difficult in patients satisfying both 'BMI >25 kg/m 2 ' and 'any of tongue enlargement (TE), palatine tonsil hypertrophy (PTH) and obstruction by Muller's maneuver (OMM)'. Polysomnography is warranted in such patients. Objectives: The objective was to retrospectively elucidate criteria for differentiating position-dependent OSAS on the basis of patient information and physical examinations of the upper airway obtainable in clinics. Methods: The 643 patients were categorized as positional patients (PPs) or non-positional patients (NPPs). The patient background factors examined were sex, age, BMI, and hypertension. TE, PTH, pharyngeal tonsil hypertrophy, and OMM were evaluated. Cross-validation was performed using even-numbered registrations as the training set group (Group A) and odd-numbered registrations as the test case group (Group B). Results: In Group A, patients with BMI <25 kg/m 2 were clearly more frequent among PP than among NPP. In Group A with BMI ≥25 kg/m 2, significant differences were found for TE, PTH and OMM. Significant differences were found between 0 and 1/2/3 for number of factors. Results generated from Group A were validated in Group B.