Sleep Apnea is a condition characterized by pauses in breathing during sleep. The condition can be made better by a Continuous Positive Airway Pressure (CPAP) or Bi-Level (BIPAP) device.
A CPAP device is the treatment of choice for moderate to severe Obstructive Sleep Apnea. It delivers a constant stream of pressurized air throughout the breathing cycle to "hold open" the upper airway while breathing in.
In contrast, a BIPAP device delivers two different pressures during the breathing cycle: IPAP (inspiratory positive airway pressure) and EPAP (expiratory positive air pressure). The two pressures work together to insure an open airway while inhaling and exhaling. This device is typically prescribed to treat Obstructive Sleep Apnea when CPAP is insufficient.