What Are CPAP Bilevel Machines?
CPAP bilevel machines are one type of device to assist breathing, especially while sleeping. CPAP machines are commonly used in the treatment of sleep apnea. Bilevel CPAP (or BiPAP) machines provide levels of air pressure based on inhalation and exhalation.
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Sleep Apnea
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In sleep apnea, breathing is involuntarily interrupted intermittently during sleep, resulting in fluctuations of oxygen and blood pressure in the body, which can lead to health problems. In the past, treatment was a tracheostomy, which surgically opened an airway in the trachea.
Introducing CPAP
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In 1981, the Lancet published the work of Colin Sullivan and team from Sydney, Australia about the first patients treated using a machine that delivered continuous positive airway pressure (CPAP).
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Types of CPAP Machines
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Since the introduction, the technology and design of CPAP machines have been improved to provide variations in air flow delivery: CPAP (constant pressure), bilevel CPAP or BiPAP (pressures during inhalation and exhalation) and adaptive servo-ventilators (variable pressures).
Bilevel CPAP Machines
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Bilevel CPAP machines are designed to deliver different air pressures during inhalation and exhalation, which actively supporst air exchange in the lungs without relying on the muscles.
Features of Bilevel CPAP Machines
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Bilevel CPAP machines are compact and portable. Standard features include humidifier and altitude adjustment. Optional features include heated humidifier, adjustable pressure relief between breaths, timer and CPAP option.
Benefits of Bilevel CPAP Machines
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Bilevel CPAP machines follow the body's natural breathing. The lower, constant pressure during exhalation reduces air trapped in the lungs, excessive drying of the mouth and lips and nasal congestion.
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