Full text: Available Index: LILACS (Americas) Main subject: Positive-Pressure Respiration / Pulmonary Disease, Chronic Obstructive / Noninvasive Ventilation Limits: Adult / Child / Humans Language: Spanish Journal: Rev. chil. enferm. respir Journal subject: Pulmonary Disease (Specialty) Year: 2008 Type: Article Affiliation country: Chile Institution/Affiliation country: Instituto Nacional del Tórax/CL