Which sign is most indicative of myocardial contusion?

Which sign is most indicative of myocardial contusion?

• A. CP
• B. Bruising over sternum
• C. Dyspnea, tachypnea
• D. Irregular pulse, dysrhythmia

Answer: (D)

Blunt chest trauma can injure the heart and disrupt its electrical system, making the heart’s rhythm irregular. An irregular pulse or a visible dysrhythmia indicates that the heart’s conduction is unsettled, which directly points to myocardial involvement from contusion. This sign is more specific to cardiac injury than the other options, which can result from a variety of noncardiac causes. Chest pain can come from muscle or rib injuries, bruising over the sternum simply reflects trauma to the chest wall, and dyspnea or rapid breathing can occur with lung injury, shock, or pain. So, an irregular pulse or dysrhythmia best reflects myocardial contusion among these signs, and it should prompt continuous cardiac monitoring and careful assessment of the patient’s rhythm.

Blunt chest trauma can injure the heart and disrupt its electrical system, making the heart’s rhythm irregular. An irregular pulse or a visible dysrhythmia indicates that the heart’s conduction is unsettled, which directly points to myocardial involvement from contusion. This sign is more specific to cardiac injury than the other options, which can result from a variety of noncardiac causes. Chest pain can come from muscle or rib injuries, bruising over the sternum simply reflects trauma to the chest wall, and dyspnea or rapid breathing can occur with lung injury, shock, or pain. So, an irregular pulse or dysrhythmia best reflects myocardial contusion among these signs, and it should prompt continuous cardiac monitoring and careful assessment of the patient’s rhythm.