1. Noninvasive Ventilation
Jeffrey T. Rabatin, MD, Peter C. Gay, MD 
Mayo Clinic Proceedings 
Volume 74, Issue 8, Pages (August 1999)
DOI: /
Copyright © 1999 Mayo Foundation for Medical Education and Research Terms and Conditions

2. Fig. 1
Typical noninvasive positive pressure ventilation system that uses a full-face mask and a portable bilevel positive airway pressure ventilator.
Mayo Clinic Proceedings  , DOI: ( / )
Copyright © 1999 Mayo Foundation for Medical Education and Research Terms and Conditions