12.Order: Diltiazem (Cardizem) 0.25 mg/kg/IV push over 2 minutes. The label on the vial reads 5 mg/ ml. The patient weighs 210 lbs. How many mg of Cardizem will the patient receive?How many ml contain the dose of the medication?13.Order: Narcan (naloxone hydrochloride) a narcotic antagonist, 0.4 mg IVP undiluted, available is Narcan 1 mg/ml. how many ml would you administer?14.You have an infusion of heparin 25,000 units in 500 ml D5W. The patient is receiving 1,500 units/ hr. What is the setting on the pump in ml/hr? How many hours will it take to infuse 500 ml?15.A patient must receive 0.5 mg of scopolamine IM, a parasympathetic antagonist. The label on the ampule reads 0.3 mg/ml. How many ml will you administer to this patient?16.Order: Potassium chloride (K-Lor), 40 mEq, po. Available is 10 mEq/ 5ml. How many ml are needed?

Med-math Practice Qustions for 4
th
Semester
1.A patient is to receive 20 units of 70/30 insulin and regular insulin 5 units per sliding scale.Available: 70/30 insulin 100 units/ml and regular insulin 100 units/ml.How many units of NPH will the patient receive?How many units of regular insulin will the patient receive?2.Order: Heparin 25,000 units in 500 ml of D5W to infuse at 1100 units per hour. How many ml/ hr do you set the pump?3.Order: Insulin IV drip to infuse at 8 units/ hour. Available: Insulin 200 units in 100 ml of 0.9% NaCl. How many ml per hour do you set the pump?4.Lidocaine 2 gm in 250 ml of D5W infusing at 30 ml/ hour. How many mg/min is the patient receiving?5.Order: Dopamine to infuse at 5 mcg/kg/min. The patient weighs 70 kg. Available: Dopamine 800 mg/ 500 ml D5W, calculate the rate in ml/hr.6.Order: D5W 50 ml with 20 mEq KCl to infuse at 8 mEq/ hr per IV pump.How many ml of solution will you administer per hour?7.Order: Ampicillin 400 mg IM q6hAvailable: Vial with powder. Label reads: For IM injection, add 3.5 ml diluent (read accompanying circular). Resulting solution contains 250 mg Ampicillin per ml. Use solution within one hour.How many ml will you give?8.Order: PCA of Morphine IV infusion. Concentration is morphine 1 mg/mlPCA dose 1 mg per doseContinuous/ basal dose of 2 mg per hourLock out time 10 minutesBolus 1 mg every 60 min if needed. How many total mg could the patient receive per hour?9.Order: Lidocaine 75 mg IVP for frequent ventricular arrhythmias. Recommended administration time is 50 mg/ min. How many minutes will it take to give this drug?10.Order: Ancef 50 mg every 6 hoursAvailable: Ancef 50 mg in 50 ml 0.9 NaCl solution. IVPB tubing delivers 20 gtt/ml. You are to infuse this medication over 30 minutes. How many gtt/min do infuse?

Dosage Calculations
Sample Problems
N-53