The nurse is reviewing the classes of
antidysrhythmic drugs. Amiodarone (Cordarone) is classified on the Vaughan Williams classification as a class III drug, which means it works by which mechanism of action?
a. Blocking slow calcium channels
b. Prolonging action potential duration
c. Blocking sodium channels and affecting phase 0
d. Decreasing spontaneous depolarization and affecting phase 4
Question 2
Which drug classes are considered first-line treatment for heart failure? (Select all that apply.)
a. Angiotensin-converting enzyme (ACE) inhibitors
b. Angiotensin II receptor blockers (ARBs)
c. Digoxin (cardiac glycoside)
d. Beta blockers
e. Nesiritide (Natrecor), the B-type natriuretic peptide
