Ontario Registered Pharmacy Technician (RphT) Practice Exam

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If a patient should receive a medication at 15mg/kg/day in 3 equally divided doses, what will the approximate dose for a 142lb patient be?

  1. 968mg

  2. 323mg

  3. 2904mg

  4. 284mg

The correct answer is: 323mg

The approximate dose for a 142lb patient will be 323mg. To calculate this, first convert the weight from pounds to kilograms by dividing it by 2.2. In this case, 142/2.2 = 64.5kg. Then multiply this number by 15 to get the total amount of medication needed for the day, which is 967.5mg. Finally, divide this by 3 to get the dose per administration, which is approximately 323mg. Option A (968mg) is incorrect because it does not take into account the need for 3 equal doses per day. Option C (2904mg) is incorrect because it incorrectly multiplies the weight in pounds by 15. Option D (284mg) is incorrect because it incorrectly divides the total amount by the number of doses

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