1) There is many cases as,
It occurs frequently that is not convalescing satisfactorily due to airway absitrcution during sleeping, or lack of ventilation from insfficient breathing ability. In this reason, it turns to mandatory ventilation status, increases the stress of cardiovascular system(heart, and brain vascular) and turns for the worse to cerebral apoplexy.
In this cases, the most important thing is maintain of insufficient breathing and airway. It should be more comfortable with airway security and dead space reduction. The O2 Steam is best solution for this case.
2) Must reduce the dead space of Upper Airway(the Nasal Cavity)
It is designated new concept of positive pressure support for easy exhalation that support inspiration in inhalation of breath and interupt the flow quickly in exhaltion. It is same effect but more comfortable to inhale and exhale both together so it is basically big different wiht CPAP.
Most of case of CPAP patient needs to have adaptation period due to uncomfortable. It means increase of WOB, and disturb of stable sleeping. This is very well known for the clinical effect beside the ventilation only.
Positive Pressure Support, Lower expiration resistance as support of inspiration
Maintain of airway and comfortable breathing
easy to breathing? = possible to support of inspiration and low of expiration resistance.
Support of Inspiration : PSV Trg
Expiration Resistacne : Ex_Sen, E_time