Podcast
Questions and Answers
Which enzymes released from necrotic cells during a myocardial infarction are more specific for heart tissue?
Which enzymes released from necrotic cells during a myocardial infarction are more specific for heart tissue?
- Creatine phosphokinase with M and B subunits (CKMB) and myosin
- Lactic dehydrogenase (LDH-1) and creatine phosphokinase with M and B subunits (CKMB) (correct)
- Aspartate aminotransferase (AST) and myosin
- Lactic dehydrogenase (LDH-1) and aspartate aminotransferase (AST)
Which substance, elevated a few hours after MI, provides an earlier confirmation of a myocardial infarction?
Which substance, elevated a few hours after MI, provides an earlier confirmation of a myocardial infarction?
- Lactic dehydrogenase (LDH-1)
- Troponin (correct)
- Myosin
- Creatine phosphokinase with M and B subunits (CKMB)
Which abnormal laboratory findings are common in patients with myocardial infarction, signifying inflammation?
Which abnormal laboratory findings are common in patients with myocardial infarction, signifying inflammation?
- Leukocytosis, elevated CRP, and erythrocyte sedimentation rate (correct)
- Elevated serum electrolytes
- Arterial blood gases abnormalities
- High levels of myosin and troponin
Which enzyme is not typically released from necrotic cells during a myocardial infarction?
Which enzyme is not typically released from necrotic cells during a myocardial infarction?
Which measurements are helpful in determining ventricular function during a myocardial infarction?
Which measurements are helpful in determining ventricular function during a myocardial infarction?
Which of the following is the most specific ECG change that confirms the diagnosis of a myocardial infarction?
Which of the following is the most specific ECG change that confirms the diagnosis of a myocardial infarction?
Which of the following serum enzymes is the earliest marker of myocardial necrosis after a myocardial infarction?
Which of the following serum enzymes is the earliest marker of myocardial necrosis after a myocardial infarction?
Which of the following serum electrolyte abnormalities is most commonly seen in patients with a myocardial infarction?
Which of the following serum electrolyte abnormalities is most commonly seen in patients with a myocardial infarction?
Which of the following laboratory findings is NOT commonly seen in patients with a myocardial infarction?
Which of the following laboratory findings is NOT commonly seen in patients with a myocardial infarction?
Which of the following measurements is the most helpful in determining ventricular function during a myocardial infarction?
Which of the following measurements is the most helpful in determining ventricular function during a myocardial infarction?
Which of the following enzyme isoforms is the most specific marker for myocardial injury during a myocardial infarction?
Which of the following enzyme isoforms is the most specific marker for myocardial injury during a myocardial infarction?
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