Use of Heliox Associated With PEEP in Patients With Asthma

Exclusion Criteria

• •patients unable to understand or perform the spirometric maneuver or failed to keep in proper positioning to obtain the scintigraphic images
• •History of smoking over the past three years associated with a consumption greater than 100 cigarettes per year or who had history of smoking increased 10 years
• •pulmonary comorbidities such as COPD, bronchiectasis and tuberculosis sequelae
• •Pregnancy and any contraindication to the use of PEP, such as active hemoptysis, sinusitis, surgery or facial trauma, oral or injury, epistaxis, esophageal surgery and nausea.