A device that is an effective treatment for sleep apnea patients; delivers air into airways through a specially designed face or nasal mask or pillows. These machines are called “bilevel” because they have two air pressure settings:
· When you breathe in, BPAP machines deliver more air pressure. This is called inspiratory positive airway pressure (IPAP).
· When you breathe out, the machine reduces the air pressure. This is called expiratory positive airway pressure (EPAP)