title: Subjective oropharyngeal symptoms for abnormal swallowing in Japanese patients with obstructive sleep apnea syndrome: a descriptive questionnaire study.
abstract: OBJECTIVE
  This study aimed to investigate the prevalence of clinical symptoms related to abnormal swallowing in a large sample of obstructive sleep apnea syndrome (OSAS) patients.
  
  
  METHODS
  Oropharyngeal symptoms for abnormal swallowing were assessed by a self-administered questionnaire in 507 consecutive patients (females: 65, males: 442; mean age: 49.6 ± 12.6 years old) with clinical symptoms of OSAS, enrolled for cardiorespiratory evaluation.
  
  
  RESULTS
  Overall, 16.2% of patients (82/507) had at least one symptom for abnormal swallowing and 6.3% (32/507) had two or more symptoms. The most frequent symptom was difficulty with coughing up phlegm during or after a meal (8.3%). Demographic, sleep, and clinical variables did not differ between the patients with and without abnormal symptoms.
  
  
  CONCLUSIONS
  The results of the current study showed that 16% of middle-aged OSAS patients reported pharyngeal symptoms related to abnormal swallowing, regardless of the severity of OSAS.
authors.affiliation: a Department of Oral Anatomy and Neurobiology , Osaka University Graduate School of Dentistry , Japan.|b Osaka University Hospital Sleep Medicine Center , Japan.
authors.forename: Takafumi
authors.initials: T
authors.lastname: Kato
authors.affiliation: c Nihon University School of Dentistry , Department of Dysphagia Rehabilitation , Tokyo , Japan.
authors.forename: Kimiko
authors.initials: K
authors.lastname: Abe
authors.affiliation: b Osaka University Hospital Sleep Medicine Center , Japan.|d Osaka University , Support Center for Campus Life , Japan.|e Osaka Kaisei Hospital Sleep Medical Center , Japan.
authors.forename: Akira
authors.initials: A
authors.lastname: Mikami
authors.affiliation: e Osaka Kaisei Hospital Sleep Medical Center , Japan.
authors.forename: Hideko
authors.initials: H
authors.lastname: Sugita
authors.affiliation: e Osaka Kaisei Hospital Sleep Medical Center , Japan.
authors.forename: Hisae
authors.initials: H
authors.lastname: Muraki
authors.affiliation: e Osaka Kaisei Hospital Sleep Medical Center , Japan.
authors.forename: Mutsumi
authors.initials: M
authors.lastname: Okura
authors.affiliation: e Osaka Kaisei Hospital Sleep Medical Center , Japan.
authors.forename: Motoharu
authors.initials: M
authors.lastname: Ohi
authors.affiliation: e Osaka Kaisei Hospital Sleep Medical Center , Japan.
authors.forename: Mitsutaka
authors.initials: M
authors.lastname: Taniguchi
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003680:Deglutition Disorders / Q000150:complications* / Q000209:etiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D020181:Sleep Apnea, Obstructive / Q000150:complications* / Q000503:physiopathology; D011795:Surveys and Questionnaires; D055815:Young Adult
keywords: Abnormal swallowing; Airway protection; Dysphagia; Obstructive sleep apnea; Prevalence; Self-report