Dosage Calculation Practice Test Solutions

Dosage Calculation Test Solutions Here are questions addressed in the classroom. 6. Morphine 3 mg. 4mg./ml. single dose container _______ml. to be wasted Order 3 mg ¾ Available 4 mg 1 ml – 0.75 ml = 0.25 ml am ’t to be wasted x 1 ml = 0.75 ml dosage to be given 24. The client is to receive 1,000 mg of a medication over 1 hour. It is mixed in 200 ml of IV solution. The __________ml./hr. IV controller will be set at Order 1000 mg in 250 ml 1 hour = 250 ml/hr. 29. At 0730, that is 250 ml. left in an IV. The infusion rate is 150 ml./hr. At what time should you be ready to __________(military time) hang a new bag (round to the nearest ½ hour)? Order 150 ml/hr. 250 ml/150 ml = 1.6 hours infusion time 250 ml remaining 60 min x 0.6 hrs. = 36 minutes 7:30 + 1 hour and 36 minutes = 0906 Round to nearest ½ hour is 0900 hrs. 2 33. An IV of 500 ml. @ 75 ml/hr is started at 0200. At what time will the IV end (nearest ½ hour)? __________(military time) Order 75 mL/hr. 500ml/75ml = 6.6 hrs. 60 min x 0.6 hrs. = 36 minutes Total infusion time of 6 hours and 36 minutes IV started at 0200 hrs. + 6 hours and 36 minutes = 0836 Round to nearest half hour = 0830 hours 32. An IV of 1,000 ml. @83 ml/hr is started at 0200. At what time will the infusion end (nearest ¼ hour) __________(military time) Order 83 ml/hr. 1000 ml/38 ml = 12.04 hours Infusion start at 0200 hours + 12 hours = 1400 hours 38. The IV runs at 150 ml./hr. and the tubing delivers 20 drops/ml. How many drop/min will the IV run? Order 150 ml/hr. 150ml/60 minutes x 20 gtt/ml = 50 gtt/minute __________drops/min. 3 51. A 50-year-old client weighs 110 lbs. The physician ordered a med given 60 units/kg. diluted in 100 ml of 0.9% normal saline. Using an 80 unit/ml. vial, how many milliliters did the nurse add to the IV solution? __________ml. 110 lbs./ 2.2 kg = 50kg Order 60 units/kg 50kg x 60 units = 3000 units 3000 units/80 units x 1ml = 37.5 ml 54. The client admitted in the ED is to have an IV of aminophylline at 20 mg./hr. started. The pharmacy has sent a bag of 250 ml. of D5W with 500 mg. aminophylline _________ml/hr added. The nurse will set the IV controller to run at Order 20 mg/hr. 20 mg/500 mg x 250 ml = 10 ml/hr.