Prevalence of insomnia and sleep characteristics in the general population of Spain.

Objective: The goals of this study were to estimate the prevalence of insomnia symptomatology and diagnoses in the Spanish general population and to determine if certain sleep parameters were related to specific insomnia symptoms.

Methods: This is a cross-sectional telephone survey performed in the general population of Spain using a representative sample of 4065 individuals aged 15years or older. The participation rate was 87.

[Cost-effectiveness analysis of automatic titration of continuous positive airway pressure at home in 1 night versus 2 nights].

Objective: To assess the cost-effectiveness of automatic continuous positive airway pressure (CPAP) titration at home on 1 night or 2 consecutive nights in patients with the sleep apnea-hypopnea syndrome (SAHS).

Patients And Methods: A home titration study was performed using automatic CPAP for 2 consecutive nights on 100 patients with SAHS and an indication for CPAP. The number of successful studies and the costs of the first night and both nights were analyzed.

[Effects of functional septoplasty in obstructive sleep apnea syndrome].

Background And Objective: To evaluate the efficacy of functional septoplasty in a group of patients with septal dysmorphy and obstructive sleep apnea syndrome (OSAS).

Patients And Method: 34 patients with nasal respiratory insufficiency and chronic snore were included from 1997 to 2003. All of them were diagnosed of OSAS by nocturnal polysomnography (PSG) and of septal dysmorphy by ORL physical examination.

Predictive factors of quality-of-life improvement and continuous positive airway pressure use in patients with sleep apnea-hypopnea syndrome: study at 1 year.

Study Objectives: To assess predictive factors of quality-of-life (QoL) improvement and continuous positive airway pressure (CPAP) use in patients with sleep apnea-hypopnea syndrome (SAHS) after 1 year of treatment with CPAP.

Design: Observational, prospective cohort study.

Setting: Sleep unit in a university hospital.

Comparison of conventional nighttime with automatic or manual daytime CPAP titration in unselected sleep apnea patients: study of the usefulness of daytime titration studies.

Daytime CPAP titration studies with full polysomnography have been successfully performed in patients with severe sleep apnea-hypopnea syndrome (SAHS). The implementation of daytime studies in unselected SAHS patients could help to reduce the waiting lists for CPAP titrations. The main purpose of this study was to compare the effectiveness of conventional versus manual or automatic daytime CPAP titration in unselected patients with SAHS.

Obstructive sleep apnea and thoracic aorta dissection.

Obstructive sleep apnea syndrome (OSAS) is a process that is associated with the development of arterial hypertension, the main risk factor for aortic dissection and during obstructive episodes of the upper airways with marked increases in transmural pressure of the aorta wall. The aim of this work was to study the association between aortic dissection and OSAS. Nineteen consecutive patients with thoracic aorta dissection and 19 hypertensive patients of similar age, sex, and body mass index were studied by clinical questionnaire and polysomnography.