Which pattern is typically associated with pressure-controlled ventilation?

Pressure-controlled ventilation is characterized by a decelerating flow pattern. This type of ventilation mode allows for pressure to be maintained at a preset level, which means that the ventilator delivers air into the lungs until the set pressure is reached. As the gas enters the airways, the flow rates typically start high and then decrease over the course of the inspiratory phase. This decelerating flow pattern is essential for maintaining lung protection, reducing the risk of barotrauma, and ensuring a more comfortable delivery of breath to patients, especially those with compromised lung compliance.

The decelerating pattern helps to enhance gas exchange by allowing for a gradual decrease in the flow rate as the lung volume increases, which also helps to prevent rapid inflation and the associated complications that can arise from higher flow rates. Overall, this pattern aligns well with the physiological dynamics of breathing and supports effective ventilation while minimizing stress on the lungs.