During normal breathing, air moves into your lungs when you expand them, bringing oxygen into your body. If you have trouble breathing enough on your own, a BiPAP machine can help push air into your lungs.
During use, you wear a mask or nasal plugs. These are linked to a tube that leads to a BiPAP machine. The machine sends pressurized air into your airways. The machine helps open your lungs with this air pressure. This is called positive pressure ventilation.
BiPAP delivers higher pressure when you breathe in and lower pressure when you breathe out. This is different from continuous positive airway pressure (CPAP), which sends the same amount of pressure as you breathe in and out. Some health problems respond better to BiPAP than to CPAP.
Your health care team will determine the settings on the BiPAP and tell you when you need to wear it.