NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

Which loop diuretic has an equivalent dose of 20 mg?

1. Ethacrynic Acid

2. Furosemide

3. Torsemide

4. Bumetanide

The correct answer is: Torsemide

Torsemide has an equivalent dose of 20 mg because different loop diuretics have different potencies and thus require different doses. While Ethacrynic Acid, Furosemide, and Bumetanide may require different doses to achieve the desired effect, Torsemide specifically has an equivalent dose of 20 mg. Therefore, the other options are incorrect because they do not explicitly state the equivalent dose of 20 mg. Additionally, Ethacrynic Acid has a much lower potency compared to the other options and requires a higher dose, while Furosemide and Bumetanide have equivalent doses of 40 mg and 1 mg respectively.