Obstructive sleep apnea-hypopnea syndrome in patients with severe chronic respiratory insufficiency.

Introduction And Objective: Although sleep disordered breathing is common in patients with a severe chronic respiratory insufficiency (SCRI), there is few information on its prevalence. Our aim was to describe the prevalence and characteristics of the obstructive sleep apnea-hypopnea syndrome (OSAHS) in these patients.

Material And Methods: Prospective and observational study carried out on patients with a SCRI included in a waiting list for a lung transplantation and who had undergone a standard polysomnography.

Videolaryngoscopy With Noninvasive Ventilation in Subjects With Upper-Airway Obstruction.

Background: Noninvasive ventilation (NIV) titration may be difficult when dynamic airway obstruction episodes persist, even with high expiratory positive airway pressure (EPAP). We aimed to determine the usefulness of videolaryngoscopy during NIV for identifying mechanisms and sites of obstruction and for providing a guide for their resolution in difficult-to-titrate subjects.

Methods: When obstructions during NIV were present in the built-in software, EPAP was raised to 12 cm HO.

Sleep-Related Breathing Disorders and Lung Transplantation.

Aim: Sleep-related breathing disorders (SRBD) are common in patients with lung transplantation (LT); however, there are few data about its prevalence, and none about its pathogenesis or evolution. The SRBD events consist mainly obstructive, central, and mixed apnea, as well as hypopneas. The aim of this study was to describe the prevalence of SRBD before the LT, and its evolution after a period of 1 year follow-up.