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Order: 1 liter or 1000 mL of D5W to infuse over 6 hours

Available: Macrodrip set: 10 gtt/mL

The IV flow rate would be ______gtt/min.

A.

28

B.

27

C.

16.67

D.

17

E.

17

Answer and Explanation

The Correct Answer is A

Given:

Volume of fluid: 1 liter = 1000 mL

Infusion time: 6 hours

Drop factor: 10 gtt/mL

 

Formula:

Flow rate (gtt/min) = (Volume (mL) / Time (hr)) x Drop factor (gtt/mL) / 60 min/hr

 

Step 1: Calculate the infusion rate in mL/hr:

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

Infusion rate (mL/hr) = 1000 mL / 6 hr

Infusion rate (mL/hr) = 166.67 mL/hr

 

Step 2: Calculate the flow rate in gtt/min:

Flow rate (gtt/min) = (Infusion rate (mL/hr) x Drop factor (gtt/mL)) / 60 min/hr

Flow rate (gtt/min) = (166.67 mL/hr x 10 gtt/mL) / 60 min/hr

Flow rate (gtt/min) = 1666.7 gtt/hr / 60 min/hr

Flow rate (gtt/min) = 27.78 gtt/min

 

Step 3: Round to the nearest whole number:

Flow rate (gtt/min) ≈ 28 gtt/min


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Related Questions

Correct Answer is D

Explanation

Rationale:

Ordered Dose:

The prescription is for 12 mg of Celestone Soluspan (betamethasone) IM every 24 hours for 2 doses.

Available Dose (from label): The vial contains 6 mg/mL.

Dosage Calculation: Using the formula:

Volumetoadminister(mL) = Availableconcentration(mg/mL) / Ordereddose(mg)

Volumetoadminister = 12mg / 6mg/mL = 2 mL

Administration Route:

The order specifies IM (intramuscular) administration, aligning with the label instructions.

Thus, 2 mL IM is the correct dosage to administer.

Correct Answer is B

Explanation

Calculate the dosage using the ratio and proportion:

Given:

Order: 200 mg p.o. t.i.d.

Available: Tegretol 100 mg chewable tablets.

Step 1: Set up the proportion

Availabledose(100mg) : 1tablet = Ordereddose(200mg) : xtablets

Step 2: Solve for ?

100 mg : 1 tab = 200 mg : ? tabs

? = 200/100 = 2 tablets

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