ANSWER 1

1. False. Thoracic CT provides no extra information in the diagnosis of cardiac contusion, but may of course demonstrate and quantify other injuries.

2. False. CK-MB measurement is irrelevant in the diagnosis of blunt cardiac trauma as up to 7% of skeletal muscle CK may be in the MB isoenzyme.1 As with acute coronary syndromes, serum troponin levels are more cardio-specific, but the ideal timing for measurement is unclear.2

3. False. Damage to the right ventricle is …