A postpartum client weighing 165 lb is prescribed to take 12 mg/kg/day of lysine to help with afterpains. If the client ingests 375 mg of lysine in food, how many additional milligrams of the supplement should the client take? (Calculate to the nearest whole number.)
What will be an ideal response?
525 mg
Explanation: First determine the client's weight in kilograms by dividing the weight in pounds by 2.2, or 165/2.2 = 75 kg. Then determine the amount of lysine that should be taken each day by multiplying the client's weight by 12, or 75 × 12 mg = 900 mg. If the client ingests 375 mg of lysine each day in food, then subtract this amount from the total amount of lysine, or 900 – 375 = 525 mg.
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