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Exam 23: Heparin Calculations

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Question 1

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Directions: Calculate the following hourly dosage of heparin (units/hr). - Order: Infuse heparin at 800 units/hr IV from a solution containing 40,000 units in 1,000 mL D5W. How many milliliters will infuse per hour? _____ mL

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Question 2

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Directions: Calculate the following hourly dosage of heparin (units/hr). - Order: 25,000 units heparin IV in 250 mL 0.9% NS to infuse at 20 units/kg/hr. The client weighs 165 lb. a. Weight in kilograms: _____ b. How many units will the client receive per hour? _____

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a. 165 lb ÷ 2.2 = 75...

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Question 3

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Directions: Calculate the following hourly dosage of heparin (units/hr). - Which solution of heparin is more concentrated: 1,000 units per mL or 10,000 units per mL? _____

Directions: Calculate the following hourly dosage of heparin (units/hr). - A client weighs 220 lb. The hospital protocol for IV heparin drip is 14 units/kg/hr. How many units per hour should the client receive? _____

Directions: Calculate the following hourly dosage of heparin (units/hr). - A client weighs 70 kg. Heparin infusion: Heparin 25,000 units in 1,000 mL 0.9% sodium chloride. Order: Bolus with heparin sodium at 90 units/kg, then initiate drip at 20 units/kg/hr. a. Calculate the heparin bolus dosage: _____ b. Calculate the infusion rate for the IV dosage: _____ c. Determine the rate in mL/hr at which to set the infusion device: _____

Directions: Calculate the following hourly dosage of heparin (units/hr). - Order: 25,000 units of heparin in 250 mL D5W to infuse at 8 mL/hr units/hr = _____

Directions: Calculate the following hourly dosage of heparin (units/hr). Order: Heparin 4,600 units subcut 2 hours before surgery Available: a. How many milliliters will you administer? _______ b. Shade in the dosage on the syringe provided.

Directions: Calculate the following hourly dosage of heparin (units/hr). - Order: 45,000 units of heparin in 1,000 mL D5 $^1 / _2$ /2 NS at 25 mL/hr units/hr = _____

Order: Heparin 25,000 units in 500 mL D5W to infuse at 15 mL/hr. Calculate the hourly heparin dosage. _________________ units/hr

Directions: Calculate the following hourly dosage of heparin (units/hr). - Order: 50,000 units of heparin in 1 L D5 0.9% NS to infuse at 40 mL/hr units/hr = _____

Directions: Calculate the following hourly dosage of heparin (units/hr). - A client weighs 165 lb. Order: Administer a bolus of heparin sodium IV. The hospital protocol is 80 units/kg. How many units will you administer? _____

Directions: Calculate the following hourly dosage of heparin (units/hr). Order: Heparin 5,600 units subcut stat Available: a. How many milliliters will you administer? ___________ b. Shade in the dosage on the syringe provided.

Directions: Use the following weight-based heparin protocol for the following problems. 1. Bolus heparin at 80 units/kg 2. Begin intravenous infusion of heparin at 18 units/kg/hr using 25,000 units of heparin in 250 mL of 0.45% NaCl for 100 units per mL. 3. Adjust intravenous heparin daily on the basis of APTT results. •APTT less than 35 sec. Rebolus with 80 units/kg and increase rate by 4 units/kg/hr •APTT 35-45 sec. Rebolus with 40 units/kg and increase rate by 2 units/kg/hr •APTT 46-70 sec. No change •APTT 71-90 sec. Decrease rate by 2 units/kg/hr •APTT greater than 90 sec. Stop heparin infusion for 1 hour and decrease rate by 3 units/kg/hr - A client 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 a milliliter.

Directions: Calculate the following hourly dosage of heparin (units/hr). - A client weighs 88 kg. Order: Bolus with heparin at 80 units/kg; initiate drip at 18 units/kg/hr. Heparin infusion 25,000 units in 500 mL 0.9 % sodium chloride. a. Calculate the heparin bolus dosage: _____ b. Calculate the infusion rate for the IV dosage: _____

Directions: Calculate the following hourly dosage of heparin (units/hr). - Order: 40 units/kg/hr heparin IV. The client weighs 50 kg. How many units should the client receive per hour? _____

Order: Heparin bolus dosage of 40 units/kg IV prior to initiating a continuous infusion. The client weighs 132 lb. Available: Heparin 1,000 units per mL a. Calculate the bolus dosage ______________________ b. Calculate the number of mL that will be needed to administer the dose. ____________

Directions: Use the following weight-based heparin protocol for the following problems. 1. Bolus heparin at 80 units/kg 2. Begin intravenous infusion of heparin at 18 units/kg/hr using 25,000 units of heparin in 250 mL of 0.45% NaCl for 100 units per mL. 3. Adjust intravenous heparin daily on the basis of APTT results. •APTT less than 35 sec. Rebolus with 80 units/kg and increase rate by 4 units/kg/hr •APTT 35-45 sec. Rebolus with 40 units/kg and increase rate by 2 units/kg/hr •APTT 46-70 sec. No change •APTT 71-90 sec. Decrease rate by 2 units/kg/hr •APTT greater than 90 sec. Stop heparin infusion for 1 hour and decrease rate by 3 units/kg/hr - A client weighs 158.4 lb. Determine the bolus dose of heparin, the initial infusion rate, and then adjust the hourly infusion rate based on the APTT results. APTT is reported as 88. The IV pump is calibrated to deliver in tenths of an mL/hr.

Order: Heparin 20,000 units in 500 mL D5W to infuse at 12 mL/hr. Calculate the hourly heparin dosage. ___________________ units/hr

Directions: Calculate the following hourly dosage of heparin (units/hr). - Order: 30,000 units of heparin in 500 mL D5W to infuse at 15 mL/hr units/hr = _____

Directions: Calculate the following hourly dosage of heparin (units/hr). - Order: Infuse heparin at 2,000 units/hr IV from a solution containing 20,000 units of heparin in 500 mL D5W. How many milliliters will infuse per hour? _____ mL