Evolve HESI Practice Exam

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How many tablets of metolazone (Zaroxolyn) should the nurse plan to administer for a prescribed dose of 7.5 mg?

1 tablet
1½ tablets
2 tablets
3 tablets

The correct answer is: 1½ tablets

The prescribed dose of 7.5 mg of metolazone (Zaroxolyn) typically corresponds to a standard tablet strength available for this medication. Metolazone commonly comes in strengths of 2.5 mg and 5 mg. To achieve the total required dose of 7.5 mg, a combination of the available tablet strengths needs to be utilized. To calculate this, administering three 2.5 mg tablets would provide a total of 7.5 mg (2.5 mg + 2.5 mg + 2.5 mg), which is appropriate. Alternatively, using one 5 mg tablet in conjunction with one 2.5 mg tablet results in the same effective dose of 7.5 mg. However, considering the answer of 1½ tablets indicates that one 5 mg tablet plus one 2.5 mg tablet is correct rather than this alternative calculation, aligns with the option given. Therefore, planning to administer 1½ tablets effectively meets the prescribed dose of 7.5 mg for the patient.