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the provider has prescribed Phenergan 18.75mg to be administered IM now and q4-6hr prn for nausea....

the provider has prescribed Phenergan 18.75mg to be administered IM now and q4-6hr prn for nausea. you have on hand Phenergan 25mg/ml. How many Ml should be drawn for this client?

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Answer #1

Answer : 0.75 mL

Prescribed dose - Phenergan 18.75 mg IM stat and q4-6hr prm

Available medicine - Phenergan 25 mg/1mL

(ie Desired dose - 18.75mg, Volume of available dose- 1 mL, Dosage strength of available dose - 25mg)

mL to be administered ?

mL per dose =  

mL per dose = (cancel out mg from numerator and denominator)

mL per dose = mL

mL per dose = 0.75 mL

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