【单选题】A 56-year-old man presents to the emergency room with 1 hour of chest pain. Laboratory studies show an increased leukocyte count and increased serum levels of cardiac enzymes. ECG confirms a massive t...
A.
Collagen-rich scar tissue
B.
Extensive infiltration of myocardium with mononuclear cells
C.
Necrosis of cardiac myocytes and infiltrates of neutrophils
D.
No obvious changes evident by light microscopy
E.
Proliferation of fi broblasts and capillary endothelial cells
【单选题】A 56-year-old white man with a history of a large anterior wall myocardial infarction and an EF of 20% presents to your clinic. He notes shortness of breath after climbing two flights of stairs and af...
A.
Begin hydralazine and isosorbide dinitrate
B.
Begin digoxin
C.
Begin spironolactone
D.
Hospitalization for intravenous dobutamine infusion