Question

52. Calculate the mL per hr flow rate range for this IV drip: A provider orders an argatroban IV drip to begin at 2 mcg per kg per min and titrate as directed. The maximum dose is 10 mcg per kg per min. The patient weighs 88 kg. The IV bag contains argatroban 250 mg in D5W 250 mL. (Round to the tenths) 53. The order reads to give Synthroid (levothyroxine) 250 mcg po daily. The standard dose recommendation of the manufacturer is to administer Synthroid 4 - 5 mcg per kg perday. The patient weighs 125 lbs. What are the recommended minimum and maximum daily doses for this patient? (*Round to the nearest whole number.) 125165 5618kg x 50.8 kg 227 mca per day Minimum 284 mcg per day Maximum 4 meg 5 mcg X Se 8 kz 277,2 284 The physician has ordered Heparin 1400 units/hour. The pharmacy sends Heparin 30,000 units in 500 mL bag of D5W. The nurse should set the pump to infuse at how many mL per hr? (Round to the tenths.) 54. 55. The provider ordered meperidine 75 mg IM “STAT". Available is meperidine 50 mg per mL. What should the nurse administer immediately? 56. The provider ordered Robitussin cough syrup 325 mg PO QID. Available is Robitussin 500 mg per 5 mL. How many mL should the nurse administer per day?

Answer 1

52. Given data:

Ordered dose of argatroban : 2 mcg/kg/min, Patient weight is 88 kg

IV bag contain 250mg of argatroban in 250mL, hence concentration of the drug in IV bag = 250mg/250mL= 1 mg/mL

Concentration of drug is 1 mg/mL = 1000 mcg/mL ( 1 mg = 1000 mcg).

  Flow rate (mL/hr) = (Ordered dose x Weight x 60 min) / Concentration of the drug

= (2 x 88 x 60)/ 1000

= 10560 / 1000 = 10.56 mL/hr = 11mL/hr

Answer is Flow rate = 11mL/hr

54. Given data

Ordered dose of heparin = 1400 units/hr

Available heparin is 30000 units in 500 mL, hence concentration is 30000 units / 500 mL = 60 units/ mL

Flow rate (mL/hr) = Ordered dose / Concentration of the drug

= 1400 / 60 = 23.33 mL/hr = 23 mL/hr

Answer is The nurse has to set infusion pump at 23 mL/hr

55. Given data

Ordered dose of meperidine is 75 mg

Available meperidine is 50 mg / mL

Drug to be administered in mL = (ordered dose) x( Available volum)/ Avialable dose

= (75 mg x 1 mL) / 50mg

= 75 / 50 = 1.5 mL

  Answer is The nurse has to administer 1.5 mL of meperidine to the patient through IM

56. Given data

ordered dose of Rubittusin is 250 mg QID (4 times a day)

Available dose is 500 mg/5 mL

mL of drug per dose to be administered = (250 x 5) / 500 = 2.5 mL

2.5 mL QID has to be administered. Hence in a day the nurse has to administer 2.5 mL x 4 = 10 mL of the drug (QID = 4 times)

So the answer is mL of the drug the nurse should administer per day is 10 mL