Question: CPAP for CHF and COPD is to maintain a constant pressure in the airways (splinting with COPD) and to help push the fluid out of the alveoli and into the circulation with CHF. Would paramedics who do not have CPAP available be wrong, if the patient is conscious and tolerates, assist each inhalation with a BVM to increase tidal volume and create more positive pressure during inhalation, although not maintained with exhalation, in an attempt to force the fluid out with CHF. Debate is that we assist the ventilation at one breath every 5 seconds or 12/minute unless hyperventilating due to head trauma and respiratory problems with coning of the pupil(s). Thanks for the assistance.