HESI Dosage Calculation Exam Questions with Verified Answers | Latest
Question 1: A client with cardiogenic shock weighs 220 lb and
is receiving dopamine at the rate of 3 mcg/kg/minute. The
solution strength available is dopamine 400 mg in 250 ml of
D5W. The nurse should set the infusion pump to deliver how
many ml/hour? (Enter numeric value only. If rounding is
required, round to the nearest tenth.)
CORRECT ANSWER: 11.3
First, convert pounds to kg, 220 lb : X = 2.2 lb : 1 kg = 100 kg.
Next, calculate the dosage per minute, 3 mcg/kg/min x 100 kg =
300 mcg/min. Convert mcg/min to mcg/hour, 300 mcg/min x 60
min=18,000 mcg/hour. Convert mcg/hr to mg/hour, 18,000
mcg/hr = 18.0 mg/hour. Calculate the rate, 400 mg : 250 ml = 18
mg : X ml 400X = 4500 X = 11.25 = 11.3 ml. So, 18 mg/11.3 ml
should be infused at 11.3 ml/hour.
Question 2: A client with hypertension who weighs 72.4 kg is
receiving an infusion of nitroprusside (Nipride) 50 mg in D5W
250 ml at 75 ml/hour. How many mcg/kg/minute is the client
receiving? (Enter numeric value only. If rounding is required,
round to the nearest tenth.)
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