<unk>  <unk>  is a mode of respiratory ventilation used in the treatment of sleep apnea.<unk>  ventilation is also commonly used for those who are critically ill in hospital with respiratory failure, in newborn infants (neonates), and for the prevention and treatment of atelectasis in patients with difficulty taking deep breaths. In these patients,<unk>  ventilation can prevent the need for tracheal intubation, or allow earlier extubation. Sometimes patients with neuromuscular diseases use this variety of ventilation as well. CPAP is an acronym for "continuous<unk> ", which was developed by Dr. George Gregory and colleagues in the neonatal intensive care unit at the University of California, San Francisco. A variation of the<unk>  system was developed by Professor Colin Sullivan at Royal Prince Alfred Hospital in Sydney, Australia, in 1981. The main difference between<unk>  and CPAP machines is that<unk>  machines have two<unk>  settings: the prescribed<unk>  for inhalation<unk> , and a lower<unk>  for exhalation (epap). The dual settings allow the patient to get more air in and out of their lungs.
Positive airway pressure
Continuous positive airway pressure
Mechanical ventilation
Negative pressure ventilator
High-frequency ventilation
Non-invasive ventilation
Artificial ventilation
Airway clearance therapy