Question

A physician order 80 mg of azythromcyn P O qd. The pharmacy has 150 mg/5 mL...

A physician order 80 mg of azythromcyn P O qd. The pharmacy has 150 mg/5 mL on hand. The patient is 15 month old and weighs 20 lbs. How many mL is a safe dose for the patient.

Answer should be calculated in mL and to the nearest half number (ending in .0 or .5)

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Answer #1

ANSWER.

* Calculation of safe dose(ml) required for this patient.

          Formula = Desired dose/Dose in hand * Quantity.

      Here

           Desired dose (D) = 80 mg.

           Dose in hand (H) = 150 mg.

                 Quantity(Q) = 5ml.

As per above formula

    Amount(ml) of drug required for this patient = 80 / 150 * 5

                                                                          = 0.53 * 5

                                                                          = 2.65

                                                                          = 2.5 ml qd (One a day)

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