How does the BiPAP mode function in mechanical ventilation?

BiPAP, which stands for Bilevel Positive Airway Pressure, is designed to deliver two distinct levels of positive airway pressure during the ventilatory cycle. This is a key aspect of its functionality. During inhalation, a higher level of pressure is delivered to assist with the effort required for taking a breath, which is crucial for patients who may struggle with normal respiratory mechanics. During exhalation, the pressure drops to a lower level, making it easier for the patient to exhale. This dual-pressure system aids in preventing airway collapse and improving ventilation while also increasing comfort for the user, as they experience less resistance during exhalation.

The ability to provide two different levels of pressure serves to optimize the respiratory support tailored to the patient's needs, making it invaluable for those suffering from conditions like COPD, asthma, or other respiratory disorders.