A patient with MVA shows bruising or pain over the sternum with or without rib fractures. What is the diagnosis?

A patient with MVA shows bruising or pain over the sternum with or without rib fractures. What is the diagnosis?

• A. Pulmonary contusion
• B. Myocardial contusion
• C. Esophageal rupture
• D. Aortic injury

Answer: (B)

Bruising or tenderness over the sternum after blunt chest trauma points to injury of the heart muscle because the heart lies directly behind the sternum and can be bruised when the chest is hit hard in an accident. This blunt impact can damage the myocardium, causing a myocardial contusion that may lead to arrhythmias or temporary impairment of cardiac function. Pulmonary contusion involves the lungs and would typically present with respiratory symptoms such as shortness of breath and abnormal lung findings on imaging, not primarily sternum bruising. Esophageal rupture is a rare catastrophic injury usually with severe symptoms like chest pain and signs of infection, not simply sternum bruising. Aortic injury would present with signs of vascular injury (e.g., widened mediastinum, pulse or blood pressure differences, shock), rather than focal sternum tenderness. Thus, the combination of sternum trauma and chest wall bruising in this context most strongly suggests myocardial contusion.

Bruising or tenderness over the sternum after blunt chest trauma points to injury of the heart muscle because the heart lies directly behind the sternum and can be bruised when the chest is hit hard in an accident. This blunt impact can damage the myocardium, causing a myocardial contusion that may lead to arrhythmias or temporary impairment of cardiac function.

Pulmonary contusion involves the lungs and would typically present with respiratory symptoms such as shortness of breath and abnormal lung findings on imaging, not primarily sternum bruising. Esophageal rupture is a rare catastrophic injury usually with severe symptoms like chest pain and signs of infection, not simply sternum bruising. Aortic injury would present with signs of vascular injury (e.g., widened mediastinum, pulse or blood pressure differences, shock), rather than focal sternum tenderness.

Thus, the combination of sternum trauma and chest wall bruising in this context most strongly suggests myocardial contusion.