Estudio de prevalencia de síndrome de apneas obstructivas del sueño en la población adulta chilena. Subestudio de la Encuesta Nacional de Salud, 2016/17 / Prevalence of obstructive sleep apnea syndrome in Chilean adults. A sub-study of the national health survey, 2016/17

Background: Obstructive sleep apnea syndrome (OSAS) affects approximately 10%-20% of adults and is associated with obesity, hypertension and metabolic syndrome. Aim: To assess the prevalence and risk factors associated with OSAS in Chilean adults. Material and Methods: A standardized sleep questionnaire and respiratory polygraphy at home were conducted on adults aged 18 years or more, residing in the Metropolitan Region and enrolled in the 2016/17 National Health Survey. Results: Two-hundred and five people between 18 and 84 years old (46% men, mean age 50 years) underwent overnight respiratory polygraphy at home. The estimated obstructive sleep apnea prevalence was 49% (62% men, 31% women) considering an apnea-hypopnea index ≥ 5 respiratory events/hour, and 16% (21% men, 13% women) considering an apnea-hypopnea index ≥ 15 respiratory events/hour. The prevalence of obstructive sleep apnea continuously increased along with age for men and women, with a later onset for women. Age, gender, body mass index, cervical and waist circumference, snoring, reporting of apnea by proxies, self-reported cardiovascular and metabolic diseases such as hypertension, diabetes and dyslipidemia, were significantly associated with OSAS. No association was found with insomnia and daytime sleepiness. Conclusions: The prevalence and risk factors associated to obstructive sleep apnea syndrome were high among these adults.

Rendimiento de los cuestionarios de sueño en el diagnóstico de síndrome de apneas obstructivas del sueño en población chilena. Subestudio de la Encuesta Nacional de Salud, 2016/17 / Performance of sleep questionnaires for the diagnosis of obstructive sleep apnea syndrome

Background The diagnosis of obstructive sleep apnea syndrome (OSAS) is based on nocturnal records: polysomnography or respiratory polygraphy. However, their high costs limit their use. Aim To examine the predictive value of three sleep questionnaires (STOP, STOP-Bang, Epworth Sleepiness Scale (ESS) in the screening of OSAS in Chilean adults. Material and Methods During the National Health Survey 2016/17, 205 adults aged 50.7 ± 15.0 years (46% males) living in the Metropolitan Region answered sleep questionnaires and underwent an ambulatory respiratory polygraphy. The sensitivity, specificity, positive and negative predictive values and receiver operating characteristic curves of sleep questionnaires were calculated. Results Fifty nine percent of participants had OSAS which was moderate to severe in 26%. The clinical variables associated with OSAS were age, male gender, hypertension, dyslipidemia, overweight, cervical and waist circumferences, history of regular snoring and witnessed apneas. Daytime somnolence, insomnia and unrefreshing sleep were not associated to OSAS risk. STOP, STOP-Bang and ESS questionnaires classified 64%, 71% and 12% of cases as high risk for OSAS, respectively. The STOP and STOP-Bang questionnaires had the highest sensitivity to predict OSAS (76% and 89%, respectively) while the ESS had the highest specificity (91%). Conclusions The sleep questionnaires allowed to identify the subjects at high risk for OSAS in this sample of adults from the Metropolitan Region.

Accidentes automovilísticos: su relación con problemas de sueño / Car accidents: its relationship whith sleep disorders

La somnolencia diurna excesiva es una condición frecuente, tanto aguda como crónica, ésta última habitualmente relacionada con transtornos del sueño, principalmente el sindrome de apnea-hipopnea obstructiva del sueño. Existe abundante información que demuestra el mayor riesgo de accidentes de tránsito en individuos hipersomnes. Desgraciadamente este factor no está incluido entre las medidas educativas y preventivas de seguridad de tránsito.