A Novel Unidirectional Face Mask During NPPV in COPD Patients

Exclusion Criteria

• •1. Patients with facial deformity, heavy beard or moustache which prevents a good seal between the mask and the face;
• •2. Patients who have claustrophobia and cannot wear the mask;
• •3. Patients who are hemodynamically unstable;
• •4. Patients who are disoriented and unable to cooperate with the study procedure;
• •5. DNI or DNR status or patients in whom intubation is contraindicated;
• •6. Patients who are currently intubated;
• •7. Patients who recently (\< 6months) had an MI or stroke;
• •8. Pregnant woman; There will be no exclusion based on gender, race or ethnicity.