BiPAP is prescribed when the required pressure is so high that regular CPAP is uncomfortable to breathe out against. BiPAP stands for Bi-Level PAP, meaning there are two pressures. The high pressure helps to keep the airway open and the low pressure kicks in when exhaling to make it easier to breathe out.
Bi-Level Positive Airway Pressure is also prescribed when the patient is known to be prone to heart irregularities, when he/she suffers from other respiratory disorders or in the case of Central Sleep Apnoea. The device can have a timer which detects when the patient stops breathing altogether so it can become a ventilation-like device.
Due to the complexities involved, we only accept prescriptions based on extensive sleep studies such as PSGs.