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Calculate the flow rate in mL/hr. (Equpment used is programmable in whole mL/hr) 180 mL 0.45% NS in 40 min by infusion group

A.

4.5 mL/hr

B.

270 mL/hr

C.

180 mL/hr

D.

200 mL/hr

Answer and Explanation

The Correct Answer is B

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


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Related Questions

Correct Answer is B

Explanation

The concentration provided is 0.5 g/3 mL.

Convert grams to milligrams:

0.5g=500mg

Now, the concentration is 500 mg/3 mL.

Find the concentration in mg/mL:

Concentration=(500mg/3mL)≈166.67mg/mL

Next, to find the volume needed for a 10 mg dose, use the formula:

Volume=(Desireddose(mg)/Concentration(mg/mL)

10mg/166.67mg/mL≈0.06mL/dose

Correct Answer is D

Explanation

Given:

Ordered dose of antibiotic: 250 mg

Vial contains: 250 mg of antibiotic

Reconstitution volume: 1.7 mL of sterile water

Final volume after reconstitution: 2 mL

Step 1: Determine the concentration of the reconstituted solution:

Concentration (mg/mL) = Total amount of drug (mg) / Total volume (mL)

Concentration (mg/mL) = 250 mg / 2 mL

Concentration (mg/mL) = 125 mg/mL

Step 2: Calculate the volume to be administered:

Volume (mL) = Ordered dose (mg) / Concentration (mg/mL)

Volume (mL) = 250 mg / 125 mg/mL

Volume (mL) = 2 mL

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