What is Bilevel CPAP?

Bilevel CPAP, also known as Bipap, concerns the respiratory therapy system, which adds oxygen to the respiratory tract with a mechanical means to support normal breathing formula. In fact, CPAP means continuous positive pressure in the airways. CPAP machines are primarily intended for patients with obstructive or central sleep apnea for use during sleep and must be prescribed by a doctor.

The physician also determines the correct amount of air pressure to develop the machine on the basis of night observation of the patient in the sleep laboratory as well as on the results of polysomnography. This amount is called titrated pressure, which is measured in centimeters of water and expressed as cm H _{2 . Most patients with sleep apnea react to titrated pressure ranging from 6 to 14 cm H 2 o. However, some CPAP machines including CPAPG and Bilevel CPAP system can exceed these levels up to30 cm H 2 o.}

There is another resolution between conventional CPAP and Bilevel CPAP systems. In the first case, the patient is obliged to exhale against the same amount of titrated pressure used to enforce compressed air into air passages. In other words, the pressure rate remains the same in events and the patient must often work to exhale against it. For Bilevel CPAP systems, however, there are two titrated pressure settings, one for inhalation and the other for dispensing, the other is the exact settings. It is an adaptation of CPAP machines with C-Flex, which are like common CPCP systems, but have another function that automatically slightly reduces pressure when the patient begins to exhale.

As expected, Bilevel CPAP systems are usually higher prices than ordinary CPAP devices. They also come with another set of terminology. For example, a titrated pressure setting for inhalation is referred to as INSPiration positive pressure in the airways or IPAP. Similarly, the pressure setting for exhalation is known as expiration positive pressure in the airways or EPAPs. The difference between IPAP and EPAP is called pressure support.

There were recent progress on Bilevel CPAP machines. These improved systems have a S/T mode that means "spontaneous timed". Its purpose is to activate the machine to force inhalation if the patient stops breathing for a period of time during sleep. This ensures that the patient receives the required number of breaths per minute to transfer sufficient oxygen to the blood. In some cases, this function may even be an investigation of life.