Describe nasal expiratory positive airway pressure (epap)?

Provent. Referrring to provent?...Epap is the measurable postive pressure in your airway as you exhale. So as you breath out provent causes pressure to build up in your airway that keep your tissues from collapsing. This can be as high as as 12 cm water. (cpap can get up to 16 cm of water). For this to work your mouth must stay closed & must not have nasal obstruction.