Question

3. A nurse is preparing to administer nitroglycerin 15 mcg/min by continuous IV infusion. Available is nitroglycerin 25 mg in 250 mL. of dextrose 5% in D5W. How many mL/hour should the IV infuse?

4. A nurse is preparing to administer nipride (nitroprusside) 4mcg/kg/min by continuous IV infusion to a client who weighs 57kg. Available is nitroprusside 50mg in 250mL D5W. How many mL/hour should the nurse set the IV pump?

5. The patient is prescribed lidocaine 3 mg/min by continuous IV infusion. The pharmacy sends this patient 2 g of lidocaine in 500 mL D5W. How many mL per hour should the nurse set the IV pump?

use dimensional analysis

Answer 1

3.

A nurse is preparing to administer nitroglycerin 15 mcg/min by continuous IV infusion.

So in 1 hour, the nurse will infuse

1 mg = 1000 mcg

900 mcg = 0.9 mg

So the nurse needs to infuse 0.9 mg/hr

Available is nitroglycerin 25 mg in 250 mL. of dextrose 5% in D5W.

So,

Answer - The IV should infuse 9 ml/hr.

4.

Order dose nipride (nitroprusside) 4mcg/kg/min

client weight is 57kg

So the client need per minute

So in 1 hour the client need

1 mg = 1000 mcg

13,680 mcg = 13.68 mg

That means the client need 13.68 mg/hr.

Available quantity nitroprusside 50mg in 250mL D5W.

So,

Answer - The nurse will set the infusion pump at 68.4 ml/hr.

5.

Order dose lidocaine 3 mg/min

So in 1 hour the patient needs

1 g = 1000 mg

180 mg  = 0.18 g

So the client needs 0.18 g/hr.

Available quantity 2 g of lidocaine in 500 mL D5W

So,

Answer - The nurse will set the IV pump at 45 ml/hr.