What is the function of PEEP in alveoli management?

The function of Positive End-Expiratory Pressure (PEEP) in alveoli management is to prevent end-expiratory alveolar collapse. PEEP is a mode of mechanical ventilation that maintains a certain level of pressure in the airways at the end of expiration. This helps to keep the alveoli open and prevents them from collapsing—an important aspect for individuals with respiratory issues, as collapsed alveoli can lead to areas of poor ventilation and oxygenation in the lungs. By maintaining alveolar inflation, PEEP improves gas exchange and enhances lung compliance over time, leading to better oxygenation of the blood. This is especially beneficial in conditions like Acute Respiratory Distress Syndrome (ARDS) or severe pneumonia, where collapsed alveoli can significantly hinder respiratory function.