Mr. Brown, age 72, takes Lasix, a diuretic, for congestive heart failure. The initial prescription supplied 100 tablets (20 mg/tablet) for a daily dose of 20 mg. When edema in his extremities worsens, the doctor increases the dose of Lasix to 40 mg/day
Mr. Brown has 60 tablets left of the original prescription. Given the new dosage, how long should his prescription last? _______________
a. 2 days
b. 10 days
c. 20 days
d. 30 days
ANS: D
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Based on this description, what is your most likely diagnosis?
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