title: Sleep-related breathing disorders in adolescents aged 12 to 16 years : clinical and polygraphic findings.
abstract: OBJECTIVE
  To determine the frequency, symptoms, and polygraphic features of sleep-related breathing disorders (SRBD) in adolescents aged 12 to 16 years.
  
  
  METHODS
  Cross-sectional study.
  
  
  METHODS
  Randomly selected secondary schools in the city of Seville, SPAIN:
  
  
  METHODS
  A general population sample of adolescents (n = 101; mean [+/- SD] age, 13.2 +/- 0.8 years).
  
  
  METHODS
  An 82-item questionnaire regarding anthropometric data and nocturnal and daytime symptoms suggestive of SRBD was administered. Symptoms were evaluated according to a 4-point frequency scale. Snorers answered "sometimes" or "often" in the question about snoring, and nonsnorers answered "never" or "rarely." All subjects underwent an overnight cardiorespiratory polygraphy at home.
  
  
  RESULTS
  Twenty-nine percent of the subjects were snorers. Excessive daytime sleepiness was present in 14% of subjects, and sleep apnea was present in 3%. Polygraphy showed a respiratory disturbance index > or = 10 in 18 subjects (17.8%), but concurrent symptoms highly suggestive of SRBD were found in only 2 subjects (1.9%). Snorers had higher waist-to-hip ratios and a higher frequency of witnessed apnea or labored breathing as well as higher values of respiratory events as compared with nonsnorers. However, oximetry data were similar in both groups.
  
  
  CONCLUSIONS
  In a nonselected group of adolescents aged 12 to 16 years, the frequency of symptoms potentially associated with SRBD was similar to that reported for younger children. Snoring was associated with a higher occurrence of other nocturnal symptoms, a more central pattern of body fat distribution, and a higher respiratory disturbance index as compared with nonsnorers. Although polygraphic abnormalities were mild, two cases of probable SRBD were found with a prevalence rate of 1.9%.
authors.affiliation: Department of Pneumology, Hospital Universitario Virgen del Rocío, Sevilla, Spain. almar@comcadiz.es
authors.forename: A
authors.initials: A
authors.lastname: Sánchez-Armengol
authors.forename: M A
authors.initials: MA
authors.lastname: Fuentes-Pradera
authors.forename: F
authors.initials: F
authors.lastname: Capote-Gil
authors.forename: E
authors.initials: E
authors.lastname: García-Díaz
authors.forename: S
authors.initials: S
authors.lastname: Cano-Gómez
authors.forename: C
authors.initials: C
authors.lastname: Carmona-Bernal
authors.forename: J
authors.initials: J
authors.lastname: Castillo-Gómez
mesh_terms: D000293:Adolescent; D002648:Child; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D012891:Sleep Apnea Syndromes / Q000175:diagnosis* / Q000453:epidemiology / Q000503:physiopathology; D011795:Surveys and Questionnaires