Which laboratory finding is expected in the patient experiencing unstable angina?
A) Normal cardiac troponin levels
B) Elevated creatine kinase MB
C) Elevated myoglobin
D) Elevated creatine kinase
A) Normal cardiac troponin levels
Explanation: A) A major difference between unstable angina and non-ST-segment elevation myocardial infarction (NSTEMI) is whether damage is significant enough to release biomarkers (such as cardiac troponin levels, creatine kinase MB, and myoglobin) indicating myocardial necrosis (diagnostic for acute MI). The presence of elevated biomarkers indicating significant myocardial necrosis is diagnostic for NSTEMI, and the absence of biomarkers confirms the diagnosis of unstable angina.
B) A major difference between unstable angina and non-ST-segment elevation myocardial infarction (NSTEMI) is whether damage is significant enough to release biomarkers (such as cardiac troponin levels, creatine kinase MB, and myoglobin) indicating myocardial necrosis (diagnostic for acute MI). The presence of elevated biomarkers indicating significant myocardial necrosis is diagnostic for NSTEMI, and the absence of biomarkers confirms the diagnosis of unstable angina.
C) A major difference between unstable angina and non-ST-segment elevation myocardial infarction (NSTEMI) is whether damage is significant enough to release biomarkers (such as cardiac troponin levels, creatine kinase MB, and myoglobin) indicating myocardial necrosis (diagnostic for acute MI). The presence of elevated biomarkers indicating significant myocardial necrosis is diagnostic for NSTEMI, and the absence of biomarkers confirms the diagnosis of unstable angina.
D) A major difference between unstable angina and non-ST-segment elevation myocardial infarction (NSTEMI) is whether damage is significant enough to release biomarkers indicating myocardial necrosis (diagnostic for acute MI). The presence of elevated biomarkers indicating significant myocardial necrosis is diagnostic for NSTEMI, and the absence of biomarkers confirms the diagnosis of unstable angina.
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