Nursing practice questions with comprehensive rationales
NurseDive Free Nursing Practice Question
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.)
This question is an excerpt from Nurse Dive's nursing test bank - Gastro Urinary Systems Medication Proctored Exam. Take the full exam now
Full Explanation
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.
Similar Questions
A nurse is preparing to administer lactated Ringer's 1000 ml to infuse over 12 hr. The drop factor on the manual tubing is 10 gtt/ml. The nurse should set the manual IV infusion to deliver how many gtt/min? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Full 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: 1000 ml
Drop factor: 10 gtt/ml
Time: 12 hr
First, we need to convert the time from hours to minutes:
12 hr * 60 min/hr = 720 min
Now, we can calculate the infusion rate:
Infusion rate (gtt/min) = (1000 ml * 10 gtt/ml) / 720 min
Simplifying the equation:
Infusion rate (gtt/min) = 10000 gtt / 720 min
Dividing both sides:
Infusion rate (gtt/min) ≈ 13.89 gtt/min
Rounding the answer to the nearest whole number, the nurse should set the manual IV infusion to deliver approximately 14 gtt/min.
A nurse is preparing to administer dextrose 5% in water (DSW) 1,200 ml. IV to infuse over 24 hr. The drop factor of the manual IV tubing is 15 gtt/mL. The nurse should set the manual IV infusion to deliver how many gtt/min? (Round to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Full 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: 1,200 ml
Drop factor: 15 gtt/ml
Time: 24 hr
First, we need to convert the time from hours to minutes:
24 hr * 60 min/hr = 1,440 min
Now, we can calculate the infusion rate:
Infusion rate (gtt/min) = (1,200 ml * 15 gtt/ml) / 1,440 min
Simplifying the equation:
Infusion rate (gtt/min) = 18,000 gtt / 1,440 min
Dividing both sides:
Infusion rate (gtt/min) ≈ 12.5 gtt/min
Rounding the answer to the nearest whole number, the nurse should set the manual IV infusion to deliver approximately 13 gtt/min.
A nurse is preparing to administer 0.9% sodium chloride (NS) 100 mL IV to infuse over 4 hr. The drip factor of the manual IV tubing is 60 gtt/mL. The nurse should set the manual IV infusion to deliver how many gtt/min?
(Round the answer to the nearest whole number.)
Full 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