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CPAP vs BiPAP









Learn The Difference Between a CPAP vs a BiPAP

CPAP (Continuous Positive Airway Pressure) and BPAP (Bilevel Positive Airway Pressure) are both types of PAP therapy devices used to treat sleep apnea, but they function differently.


A CPAP device provides a continuous, steady stream of air at a single pressure throughout the night. This constant airflow helps keep the airways open to prevent apneas and hypopneas. It’s generally used for obstructive sleep apnea and is effective for many people, but some users may find the constant pressure uncomfortable.


BPAP devices, in contrast, deliver two different pressure levels: a higher pressure for inhalation and a lower pressure for exhalation. This biphasic approach makes it easier for users to breathe out against the air pressure. BPAP is often prescribed for individuals who have difficulty exhaling with CPAP or who have more complex sleep apnea conditions or other respiratory issues.


For both CPAP and BPAP, you will need to go into a sleep lab, get connected to many wires, and spend the night, to determine the pressure settings for the machine.


Alternatively, APAP is a different type of device used to treat sleep apnea, which does not require that you spend the night at a sleep lab.


Specific Conditions Where BPAP May Be Indicated


Central Sleep Apnea

This type of sleep apnea occurs when the brain fails to send the appropriate signals to the muscles that control breathing. BPAP can help by adjusting pressure levels to support breathing efforts.


Chronic Obstructive Pulmonary Disease (COPD)

BPAP is used in cases where COPD causes breathing difficulties, especially when patients experience significant fluctuations in their breathing patterns. The dual pressure levels help ease the work of breathing and improve comfort.


Neuromuscular Disorders

Conditions such as amyotrophic lateral sclerosis (ALS) or muscular dystrophy can weaken the respiratory muscles, making it hard for patients to inhale and exhale effectively. BPAP provides support for both phases of breathing, which can be crucial for these patients.


Obesity Hypoventilation Syndrome

Also known as Pickwickian syndrome, this condition involves reduced breathing during sleep due to obesity. BPAP helps manage the breathing irregularities associated with this syndrome by providing different pressure levels for inhalation and exhalation.


Cheyne-Stokes Respiration

This breathing pattern, characterized by cycles of deep breathing followed by periods of no breathing, can occur in patients with heart failure or neurological conditions. BPAP can help stabilize breathing patterns by providing appropriate pressure support.







The information, including but not limited to, text, graphics, images and other material contained on this website are for informational purposes only. It is not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of your physician or other qualified health care provider with any questions you may have regarding a medical condition or treatment.

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