Deck 16: Heparin Calculations

Question 1

A patient weighs 158.4 lb and is on an IV infusion of heparin. The PTT is reported as 88. Based on the PTT result you will decrease the IV infusion rate by __________ units per hour.

A) 2 units per hour
B) 3 units per hour
C) 4 units per hour
D) no change

Answer 1

2 units per hour

Question 2

A patient weighs 158.4 lb and is on an IV infusion of heparin. The PTT is reported as 88. Based on the PTT result you will decrease the IV infusion rate by 2 units per hour. When would you check the next PTT?

A) 4 hours after rate increase
B) 6 hours after rate increase
C) Next morning
D) 6 hours after rate decrease

Answer 2

Next morning

Question 3

Order: 25 000 units heparin IV in 250 mL 0.9% NS to infuse at 20 units/kg/h. The patient weighs 165 lb. Place a space before the hundreds place in your answer, e.g., 8 888.
The patient's weight is ________ kg and the patient will receive ________ units per hour.

Answer 3

75; 1 500

Question 4

Order: 40 units/kg/h heparin IV. The patient weighs 116 lb. Place a space before the hundreds place in your answer, e.g., 8 888.
The patient will receive _________ units per hour.

Question 5

Which solution of heparin is more concentrated: 1 000 units per mL or 10 000 units per mL? Place a space before the hundreds place in your answer, e.g., 8 888.
The ______________ per mL is more concentrated.

Question 6

A patient weighs 70 kg. Heparin infusion: Heparin 25 000 units in 1 000 mL 0.9% sodium chloride. Place a space before the hundreds place in your answer, e.g., 8 888.
Order: Bolus with heparin sodium at 90 units/kg, then initiate drip at 20 units/kg/h.
The heparin bolus dosage is ________ units and the maintenance dose will infuse at ________ units per hour regulated on the IV infusion device at _______ mL per hour.

Question 7

A patient weighs 88 kg. Place a space before the hundreds place in your answer, e.g., 8 888.
Order: Bolus with heparin at 80 units/kg; initiate drip at 18 units/kg/h. Heparin infusion 25 000 units in 500 mL 0.9% sodium chloride.
The heparin bolus dosage is _________ units and the maintenance IV infusion rate is _________ units per hour.

Question 8

Calculating Subcutaneous DosagesOrder: Heparin 4 600 units SUBCUT at 1700hrsAvailable: You will administer ________ mL.

Question 9

Calculating Subcutaneous DosagesOrder: Heparin 1 600 units SUBCUT statAvailable: You will administer ________ mL.

Question 10

Use the following weight-based heparin protocol for the following problem. Place a space before the hundreds place in your answer, e.g., 8 888. A patient weighs 158.4 lb. Determine the bolus dose of heparin and the initial infusion rate.The patient's heparin bolus dosage is __________ units and the initial IV infusion rate is __________ mL/h.

Question 11

Use the following weight-based heparin protocol for the following problem. Place a space before the hundreds place in your answer, e.g., 8 888. A patient weighs 81 kg. Determine the bolus dose of heparin, the initial infusion rate, and then adjust the hourly infusion rate up or down on the basis of the APTT results. APTT is reported as 43. The IV pump is calibrated in tenths of an mL.The patient's heparin bolus dosage is __________ units and the initial IV infusion rate is __________ mL/h.

Question 12

Use the following weight-based heparin protocol for the following problem. Place a space before the hundreds place in your answer, e.g., 8 888. A patient weighs 81 kg and is on an IV infusion of heparin. The PTT is reported as 43. The IV pump is calibrated to deliver in tenths of an mL/h.Based on the PTT result you will administer an IV heparin bolus of ___________ units and you will increase the IV infusion rate by _______ units per hour.