Which pressure is usually higher in BIPAP settings?

In BIPAP (Bilevel Positive Airway Pressure) settings, the term IPAP refers to the Inspiratory Positive Airway Pressure, while EPAP refers to the Expiratory Positive Airway Pressure. Typically, IPAP is set higher than EPAP. This difference allows for two key phases during the ventilation process: the inspiratory phase, where higher pressure (IPAP) helps to deliver air into the lungs, and the expiratory phase, where a lower pressure (EPAP) assists in keeping the airways open during expiration.

The higher IPAP level aids in effectively supporting ventilation and improving oxygenation by allowing a greater flow of air during inhalation. The lower level of EPAP, while still providing positive airway pressure, supports the maintenance of functional residual capacity and prevents airway collapse during exhalation. This pressure gradient is pivotal in managing patients with conditions such as obstructive sleep apnea and other respiratory challenges.

In summary, setting a higher IPAP compared to EPAP is essential for delivering adequate ventilatory support and facilitating effective gas exchange in patients needing noninvasive ventilation. This differentiation is a fundamental aspect of BIPAP therapy in clinical practice.