Hemothorax is a collection of blood in the space between the chest wall and the lung (the pleural cavity).
The most common cause of hemothorax is chest trauma. Hemothorax can also occur in people who have:
- Blood clotting defect
- Chest (thoracic) or heart surgery
- Death of lung tissue (pulmonary infarction)
- Lung or pleural cancer -- primary or secondary (metastatic, or from another site)
- Tear in a blood vessel when placing a central venous catheter or when associated with severe high blood pressure
- Chest pain
- Low blood pressure
- Pale, cool and clammy skin
- Rapid heart rate
- Rapid, shallow breathing
- Shortness of breath
Exams and Tests
Your health care provider may note decreased or absent breath sounds on the affected side. Signs or findings of hemothorax may be seen on the following tests:
- Chest x-ray
- CT scan
- Pleural fluid analysis (often very bloody or blood-tinged)
- Thoracentesis (drainage of pleural fluid through a needle or catheter)
The goal of treatment is to get the person stable, stop the bleeding, and remove the blood and air in the pleural space.
- A chest tube is inserted through the chest wall between the ribs to drain the blood and air.
- It is left in place and attached to suction for several days to re-expand the lung.
If a chest tube alone does not control the bleeding, surgery (thoracotomy) may be needed to stop the bleeding.
The cause of the hemothorax should be also treated. The underlying lung may have collapsed. This can lead to breathing difficulty. In people who have had an injury, chest tube drainage may be all that is needed. Surgery may not be necessary.
WHAT TO EXPECT AT THE EMERGENCY DEPARTMENT
The provider will measure and monitor the person's vital signs, including temperature, pulse, breathing rate, and blood pressure. Symptoms will be treated as needed. The person may receive:
- Breathing support. This may include oxygen, endotracheal intubation (tube through the nose or mouth into the trachea) and ventilator (breathing machine)
- Blood tests and possible blood transfusion
- Chest tube (tube through the skin and muscles between the ribs into the space around the lungs)) if there is lung collapse
- CAT/CT scan of the chest and abdomen
- Fluids given through the vein
- Medicines to treat symptoms
- X-rays of chest and abdomen or other parts of the body if there are additional injuries
The outcome depends on the cause of the hemothorax, the amount of blood loss and how quickly treatment is given.
In the case of major trauma, the outcome will depend on the severity of the injury and the rate of bleeding.
Complications may include:
- Collapsed lung, or pneumothorax, leading to respiratory failure (inability to breathe properly, provide the body enough oxygen and remove carbon dioxide)
- Fibrosis or scarring of the pleural membranes and underlying lung tissue
- Infection of the pleural fluid (empyema)
- Shock and death in severe circumstances
When to Contact a Medical Professional
Call 911 if you have:
- Any serious injury to the chest
- Chest pain or shortness of breath
Go to the emergency room or call the local emergency number (such as 911) if you have:
- Dizziness, lightheadedness, fever and cough, or a feeling of heaviness in your chest
- Severe chest, neck, jaw, shoulder or arm pain
- Severe difficulty breathing
Use safety measures (such as seat belts) to avoid injury. Depending on the cause, a hemothorax may not be preventable.
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Eckstein M, Henderson SO. Thoracic trauma. In: Marx JA, Hockberger RS, Walls RM, et al, eds. Rosen's Emergency Medicine: Concepts and Clinical Practice. 8th ed. Philadelphia, PA: Elsevier Saunders; 2014:chap 45.
Light RW, Lee YCG. Pneumothorax, chylothorax, hemothorax, and fibrothorax. In: Broaddus VC, Mason RJ, Ernst JD, et al, eds. Murray & Nadel's Textbook of Respiratory Medicine. 6th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 81.
Reviewed By: Jacob L. Heller, MD, MHA, Emergency Medicine, Virginia Mason Medical Center, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.