What is the purpose of Pressure Support Ventilation (PSV)?

Pressure Support Ventilation (PSV) is a mode of mechanical ventilation that primarily aims to reduce the work of spontaneous breathing for the patient. In PSV, when the patient initiates a breath, the ventilator provides a preset level of pressure support, which aids in the efforts of the patient's own breathing. This support helps to decrease the respiratory muscle workload and ensures that the patient achieves adequate tidal volume with each breath, promoting effective ventilation while allowing for synchronous breathing.

The reduction in the work of breathing is especially beneficial for patients who may be fatigued or struggling to maintain adequate ventilation on their own. It enables patients to breathe more comfortably and efficiently, facilitating improvements in oxygenation and overall respiratory mechanics. As a result, PSV provides a collaborative approach where the patient can still contribute to their own ventilation while benefiting from additional support.