Answer to Question 1
ANS: C
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A Incorrect: Although granular deposits on the corneas is an adverse effect of amiodarone, it is not the most significant.
B Incorrect: Although muscle weakness is an adverse effect of amiodarone, it is not the most significant.
C Correct: Amiodarone-induced pulmonary toxicity is the most significant adverse effect of amiodarone.
D Incorrect: Although hepatic dysfunction can occur as an adverse effect of amiodarone, it is not the most significant.
Answer to Question 2
ANS: D
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A Incorrect: It is used to decrease blood pressure.
B Incorrect: It is a calcium channel antagonist.
C Incorrect: It does not increased heart rate.
D Correct: Nifedipine is a calcium channel antagonist used to treat hypertension and angina.