What does PEEP stand for?

PEEP stands for Positive End-Expiratory Pressure. It is a mode of mechanical ventilation used to maintain a pressure in the airways at the end of expiration, preventing the complete collapse of the alveoli. This technique is crucial in treating conditions such as ARDS (Acute Respiratory Distress Syndrome) because it helps improve oxygenation by increasing lung volume and enhancing the recruitment of collapsed or poorly ventilated alveoli. PEEP aids in improving the functional residual capacity, thus optimizing gas exchange in the lungs and reducing shunting, which is common in ARDS.

While the other options provide terms that may sound similar, they do not accurately define the mechanical ventilation concept. For example, 'Passive End-Expiratory Pressure' and 'Positive Inspiratory Pressure' refer to different mechanisms that are not relevant to the context of PEEP, and 'Predictive End-Expiratory Pressure' lacks recognition in the field of mechanical ventilation. Understanding PEEP is essential for healthcare providers managing patients with respiratory distress.