What is the primary treatment for a hemothorax?

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A hemothorax requires removing the blood from the pleural space to allow the lung to re-expand and improve ventilation. The primary treatment is chest tube thoracostomy to drain the blood and evacuate the pleural space. By draining the blood, you restore negative intrapleural pressure, re-expand the affected lung, and reduce the risk of complications such as infection or fibrothorax. Thoracentesis can be used to diagnose or drain very small amounts, but for a true hemothorax the definitive approach is chest tube drainage. Oxygen and supportive care may be used as needed, and if bleeding is massive or persistent after drainage, surgical intervention may be required to control the source.