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A nurse is preparing to administer liquid famotidine 20 mg PO every 6 hr for GERD. Available is famotidine 40 mg/5 ml. How many ml. should the nurse administer per dose?
(Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Answer and Explanation

The Correct Answer is ["2.5"]

To determine how many milliliters (ml) should be administered per dose, we need to calculate the dose volume using the available concentration of famotidine. 

Given: 

Famotidine concentration: 40 mg/5 ml 

Dose: 20 mg 

We can set up a proportion to solve for the volume: 

40 mg / 5 ml = 20 mg / x ml 

Cross-multiplying the proportion, we get: 

40 mg * x ml = 20 mg * 5 ml 

Simplifying, we have: 

40x = 100 

Dividing both sides by 40, we find: 

x = 100 / 40 

x ≈ 2.5 ml 

Therefore, the nurse should administer approximately 2.5 ml of famotidine per dose. 


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Related Questions

Correct Answer is ["25"]

Explanation

To calculate the infusion rate in drops per minute (gtt/min), we can use the following formula: Infusion rate (gtt/min) = (Volume to be infused (ml) * Drop factor) / Time (min) Given:

Volume to be infused: 100 ml

Drop factor: 60 gtt/ml

Time: 4 hr

First, we need to convert the time from hours to minutes:

4 hr * 60 min/hr = 240 min

Now, we can calculate the infusion rate:

Infusion rate (gtt/min) = (100 ml * 60 gtt/ml) / 240 min

Simplifying the equation:

Infusion rate (gtt/min) = 6000 gtt / 240 min

Dividing both sides:

Infusion rate (gtt/min) ≈ 25 gtt/min

Correct Answer is ["100"]

Explanation

To calculate the IV flow rate in drops per minute (gtt/min), we can use the following formula: Flow rate (gtt/min) = Volume to be infused (mL) × Drop factor (gtt/mL) ÷ Time (min) Given information:

Volume to be infused = 100mL

Drop factor = 60 gtt/mL

Time = 60 min

Substituting the values into the formula:

Flow rate (gtt/min) = 100mL × 60 gtt/mL ÷ 60 min

Flow rate (gtt/min) = 100gtt/min

Therefore, the nurse should set the IV flow rate to deliver 100gtt/min.

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