A health care provider prescribes promethazine (Phenergan), 9 mg IV every 6 to 8 hours as needed for pruritus. The medication label states: "Promethazine 25 mg/1 mL." The nurse prepares to administer one dose. How many milliliters will the nurse prepare t
to administer one dose? Fill in the blank. Record your answer using two decimal places.
ANS:
0.36
Follow the formula for dosage calculation.
Desired
----------- ? Volume = mL per dose
Available
9 mg
----------- ? 1 mL = 0.36 mL
25 mg
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