One day later, M.G. has shown only slight improvement, and digoxin (Lanoxin) 125 mcg PO daily is added to her orders
What is the action of the digoxin? Digoxin:
a. causes systemic vasodilation.
b. promotes the excretion of sodium and water in the renal tubules.
c. increases cardiac contractility and cardiac output.
d. blocks sympathetic nervous system stimulation to the heart.
Answer: c
Digoxin works by increasing cardiac contractility and thus increasing cardiac output.
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