Tension Pneumothorax

A tension pneumothorax is a serious condition affecting the lungs and the space around them. It happens when air gets trapped in the chest cavity and cannot escape, causing pressure to build up. This pressure pushes on the lung and other important structures like the heart and blood vessels. As a result, it becomes hard to breathe and the heart may not pump blood effectively. Symptoms often include sudden chest pain, shortness of breath, and a feeling of tightness in the chest. This condition can quickly become life-threatening if not treated promptly. It is considered a medical emergency because the trapped air can cause the lung to collapse and reduce blood flow to the body.

Tension pneumothorax is a life-threatening form of pneumothorax characterized by the progressive accumulation of air in the pleural space under positive pressure. This occurs due to a one-way valve mechanism, often caused by trauma, lung disease, or mechanical ventilation, allowing air to enter but not exit the pleural cavity. The increasing intrapleural pressure leads to lung collapse, mediastinal shift, and compression of the contralateral lung and great vessels. This results in impaired venous return to the heart, decreased cardiac output, and potential cardiovascular collapse. Clinically, it presents with hypotension, distended neck veins, tracheal deviation away from the affected side, and severe respiratory distress. Immediate recognition and intervention are critical to prevent death.