A healthcare professional is preparing to administer albuterol syrup 1.6 mg PO tid. Available is albuterol 2 mg/5mL. How many mL should the healthcare professional administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Correct Answer: A
Rationale: To determine the mL per dose of albuterol syrup, we need to calculate how many mL contain 1.6 mg of albuterol. Given that 2 mg of albuterol is in 5 mL of syrup, we can set up a proportion:
2 mg / 5 mL = 1.6 mg / x mL
Cross-multiply to solve for x:
2 * x = 1.6 * 5
2x = 8
x = 4 mL
Therefore, the correct answer is A: 4 mL.
Choice B (6 mL) is incorrect because it does not match the calculated value. Choice C (10 mL) is incorrect as it is too high based on the calculation. Choice D (5.5 mL) is incorrect as it does not match the precise calculated value of 4 mL.