Select the volume that will be administered to the patient in order for the patient to receive 90 mg of meperidine (Demerol).The Demerol is to be administered intramuscularly (IM).Demerol is supplied as a 5 percent solution (W/V).

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Step 1: Determine how many milligrams of drug are in a 5 percent solution. 5 g/100 ml = 5000 mg/100 ml; 5000 mg/ml ) 100 = 50 mg/ml. Step 2: Determine the dosage. 50 mg/ml = 90 mg/X; 50X = 90 ml; X = 90ml/50; X = 1.8 ml.

Select the Volume That Will Be Administered to the Patient