A pediatric patient is prescribed 200 mg of liquid ibuprofen. The pharmacy provides a suspension with a concentration of 100 mg per 5 mL. How many milliliters (mL) should the nurse administer per dose?
The correct answer is 10 mL. To determine the correct volume, the nurse should use a standard dosage calculation formula, such as 'Desired over Have' or dimensional analysis.
Using the formula (Desired Dose / Dose on Hand) x Quantity = Volume to Administer:
Desired Dose: 200 mg
Dose on Hand: 100 mg
Quantity: 5 mL
Calculation: (200 mg / 100 mg) x 5 mL = 2 x 5 mL = 10 mL.
An answer of 5 mL would be an underdose, as it only provides 100 mg of ibuprofen. An answer of 2.5 mL or 15 mL would indicate a calculation error, leading to an incorrect and potentially harmful dose.
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