The physician orders Methergine 0.3 mg by mouth twice a day for postpartum bleeding. The medication is supplied in 0.2-mg tablets. How many tablets will the nurse administer per dose? Round to the nearest tenth.
Explanation & Rationale
Choice A reason: 1 tablet provides 0.2 mg, less than the ordered 0.3 mg. This underdoses the patient, failing to control postpartum bleeding effectively, making 1 tablet incorrect for the prescribed dose. Choice B reason: Methergine 0.3 mg divided by 0.2 mg/tablet equals 1.5 tablets (0.3 ÷ 0.2 = 1.5). This delivers the exact dose, and 1.5 is already rounded to the nearest tenth, making it correct. Choice C reason: 2 tablets provide 0.4 mg, exceeding the 0.3 mg order. This overdose risks side effects like hypertension, making 2 tablets incorrect for the prescribed dosage. Choice D reason: 2.5 tablets deliver 0.5 mg, significantly exceeding the 0.3 mg order. This overdose increases adverse effects, making 2.5 tablets incorrect for the correct dosage administration.