Question

1. During your morning assessment, you note that a patient with ventricular tachycardia has a lidocaine drip infusing at 45ml/h. With a concentration of lidocaine 2g/250 ml D5W , How many milligrams per minute is the patient receiving? Round your answer to nearest tenth.

a) 7mg/min

B) 0.60 mg/min

c) 6.01 mg/min

d) 6,g/min

2. The physician has ordered an a Inocor drip at 5mcg/kg/min for a patient with congestive heart failure. The Inocor concentration is 500mg/250 ml D5W. How many milliliters per hour should the Inocor infuse for a patient weighing 64kg ? Round your answer to nearest tenth.

a) 10ml/hr

b) 9ml/hr

C) 9.6 ml/hr

d) 0.96 ml/hr

3. Isoproterenol is infusing at 15 ml/h for a patient with bradycardia . the isoproterenol bag has a 1 mg/250 ml concentration. how many micrograms per minute is the isoproterenol infusing? How many micrograms per minute is the isoproterenol infusing? Round your answer to the nearest tenth.

a) 0.1 mcg/min

b) 1.5 mcg/min

C) 1mcg/min

d) 10mcg/min

Answer 1

QUESTION 1

Drip infusion rate = 45ml/hr

drip infusion in minute will be 45(ml/hr) divided by 60 = 0.75ml/min

Concentration of lidocaine = 2gm/250ml or we can say 2000mcg/250ml = 8mcg/ml

The patient will receive = concentration of drug multiplied by drip infusion rate = 8(mg/ml) x 0.75(ml/min) = 6mg/min

QUESTION 2

If the dose of Inocor drip is 5mcg/kg/min and patient weight is 64 kg

Then, the inocor dose of the patient will be 5(mcg/kg/min) x 64 kg = 320mcg/min or 0.32mg/min

And in 1 hour it will be 0.32(mg/min) x 60 = 19.2mg/hr

The inocor concentration is 500mg/250ml or we can say 2mg/ml

Then, the infusion rate = dose divided by the concentration

= 19.2(mg/hr) / 2(mg/ml)

= 9.6ml/hr

QUESTION 3

Infusion rate per hour = 15ml/hr

Then, infusion rate per minute will be = 15(ml/hr) / 60 = 0.25 ml/min

Drug concentration given in question = 1mg/250ml or 1000mcg/250ml or 4mcg/ml

So, the isoproterenol amount given per min = drug concentration x infusion rate

= 4(mcg/ml) x 0.25(ml/min)

= 1mcg per min