Question

Hydromorphone 0.5 mg is ordered direct IV for the patient. Hydromorphone is available in 2 mg /mL. How many ml will the nurse draw up in the 1 mL syringe to give the ordered dose? _______

Clindamycin 0.6 g is ordered IV q.12h. for the patient. The pharmacy sends a vial of clindamycin labeled 900 mg / 6 mL. How many mL will the nurse administer to the patient? _________ mL

Order: Heparin 50,000 units in 100 mL D5W. Run continuously @ 2500 units/hr. Calculate the volume per hour.

The order is for IV nitroglycerine 20 mcg / min for a patient with an acute myocardial infarction. An IV of 200 mg nitroglycerine in 500 mL NS is sent to the unit by the pharmacy. How many mL / hr will the nurse set on the IV pump? _________ mL / hr

The ICU patient is on a continuous IV infusion of propofol to maintain sedation. The patient weighs 121 lb. The order is for 5 mcg / kg / min. An IV of 500 mL D5W with 100 mg of propofol is available. The nurse is correct to set the volumetric pump to ____ mL / hr.

Answer 1

1. Hydromorphone 0.5 mg is ordered direct IV for the patient. Hydromorphone is available in 2 mg /mL. How many ml will the nurse draw up in the 1 mL syringe to give the ordered dose? _______.

Calculation:

Hydromorphan is available in 2 mg/ml

Therefore 0.5 mg is present in 0.25 ml

So 0.25 ml will be drawn by nurse to administer 0.5 mg.

2. Clindamycin 0.6 g is ordered IV q.12h. for the patient. The pharmacy sends a vial of clindamycin labeled 900 mg / 6 mL. How many mL will the nurse administer to the patient? _________ mL

Calculation:

6 ml vial contains 900 mg or 0.9 ml of clindamycin

Therefore for 100 mg is present in 6/0.9

600 mg will be present in 6/0.9 x 0.6 = 4 ml

Therefore for 4 ml the nurse will administer to the patient for 0.6 g order of clindamycin.

3. Order: Heparin 50,000 units in 100 mL D5W. Run continuously @ 2500 units/hr. Calculate the volume per hour.

Calculation:

50000 unit of heparin present in 100 ml

Therefore 1 ml contains 500 units.

So for 2500 units the volume required will be 2500/500 = 5 ml

Hence 5 ml/hr will be given to administer @2500 units/hr

4. The order is for IV nitroglycerine 20 mcg / min for a patient with an acute myocardial infarction. An IV of 200 mg nitroglycerine in 500 mL NS is sent to the unit by the pharmacy. How many mL / hr will the nurse set on the IV pump? _________ mL / hr

Calculation:

Order is for IV nitroglycerine 20 mcg /min.

An IV of 200 mg nitroglycerine in 500 mL NS.

20 mcg/min means 20 x 60 mcg/hr = 1200 mcg/hr = 1.2 mg/hr.

200 mg is present in 500 ml; 1 mg is present in 500/200 = 2.5 ml

Therefore 1.2 mg will be present in 2.5/1 x 1.2 = 3 ml

So 3 ml/hr is required to administer to achieve the order of nitroglycerine @20 mcg/min.

5. The ICU patient is on a continuous IV infusion of propofol to maintain sedation. The patient weighs 121 lb. The order is for 5 mcg / kg / min. An IV of 500 mL D5W with 100 mg of propofol is available. The nurse is correct to set the volumetric pump to ____ mL / hr.

Calculation:

Patient weighs 121 lb = 54.885 kg

Order is for 5 mcg / kg / min.

Therefore propofol required per min. is

5 x 54.885 = 274.425 mcg or approx 275 mcg/min

Therefore for 1 hr

275 x 60 = 16500 mcg/hr = 16.5 mg/hr

As 500 ml D5W contain 100 mg

So 1 mg is present in 500/100 = 5ml

16.5 mg will be present in 5 x 16.5 = 82.5 ml/hr

Therefore approximately 82.5 ml/hr will be pumped to achieve the order of 5 mcg/kg/min.