While a 71-year-old woman is walking home from a shopping center, she faints and falls. She is driven home by a friend. When home she realizes that she is bleeding from her mouth and is slightly disoriented. She appears injured from the fall but does not remember tripping or falling. The woman is taken to the local emergency room. The examining physicians determines that there was a loss of consciousness; to determine the cause eh orders a head CT and ECG, and the following lab tests: CBC, PT, aPTT, CK, LD, AST, and Troponin. All tests are within normal limits. The woman is sutured for the mouth injuries and admitted for 24 hours observation.
1. Based on the tests ordered, what diagnosis does the physician suspect?
2. What laboratory tests would be elevated at 6, 12, and 24 hours if this patient had an AMI?
3. What isoenzyme tests would be useful with this patient?
