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A doctor orders nine units /kg/hr for a Heparin infusion. The patient weighs 76 kg. You're supplied with a Heparin bag that reads 50 untis/mL. How many mL/hr will you administer? |Round your answer to the nearest tenths)

A.

13 mL/hr

B.

13.66 mL/hr

C.

13.6 mL/hr

D.

13.7 mL/hr

Answer and Explanation

The Correct Answer is D

Given:

Ordered dose of Heparin: 9 units/kg/hr

Patient weight: 76 kg

Concentration of Heparin: 50 units/mL

 

Step 1: Calculate the total dose of Heparin:

Total dose (units/hr) = Ordered dose (units/kg/hr) x Patient weight (kg)

Total dose (units/hr) = 9 units/kg/hr x 76 kg

Total dose (units/hr) = 684 units/hr

 

Step 2: Calculate the infusion rate in mL/hr:

Infusion rate (mL/hr) = Total dose (units/hr) / Concentration (units/mL)

Infusion rate (mL/hr) = 684 units/hr / 50 units/mL

Infusion rate (mL/hr) = 13.68 mL/hr

 

Step 3: Round to the nearest tenth:

Infusion rate (mL/hr) ≈ 13.7 mL/hr


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Related Questions

Correct Answer is B

Explanation

Given:

Volume of fluid: 180 mL

Infusion time: 40 minutes

Step 1: Convert infusion time to hours:

Infusion time (hr) = 40 min / 60 min/hr

Infusion time (hr) = 0.67 hr

Step 2: Calculate the infusion rate in mL/hr:

Infusion rate (mL/hr) = Volume (mL) / Infusion time (hr)

Infusion rate (mL/hr) = 180 mL / 0.6667 hr

Infusion rate (mL/hr) = 269.987 mL/hr

Step 3: Round to the nearest whole number:

Infusion rate (mL/hr) ≈ 270 mL/hr

Correct Answer is D

Explanation

Given:
Volume of fluid: 50 mL (DSW) + 10 mL (for reconstitution) = 60 mL
Infusion time: 45 minutes
Drop factor: 10 gtt/mL

Formula:
Flow rate (gtt/min) = (Volume (mL) / Time (min)) x Drop factor (gtt/mL)

Step 1: Calculate the infusion rate in mL/min:
Infusion rate (mL/min) = Volume (mL) / Time (min)
Infusion rate (mL/min) = 60 mL / 45 min
Infusion rate (mL/min) = 1.33 mL/min

Step 2: Calculate the flow rate in gtt/min:
Flow rate (gtt/min) = Infusion rate (mL/min) x Drop factor (gtt/mL)
Flow rate (gtt/min) = 1.33 mL/min x 10 gtt/mL
Flow rate (gtt/min) = 13.3 gtt/min

Step 3: Round to the nearest whole number:
Flow rate (gtt/min) ≈ 13 gtt/min

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