A client with allergic rhinitis is taking the over-the-counter antihistamine diphenhydramine HCL. Which instruction is most important for the nurse to provide this client?

Do not take the medication more than once every 8 hours.

Take the medication with food to prevent gastric upset.

Avoid driving, since this medication causes drowsiness.

Use sugarless candy or gum to help prevent a dry mouth.

Answer and Explanation

The Correct Answer is C

A. Do not take the medication more than once every 8 hours:
Diphenhydramine is typically dosed every 4 to 6 hours, not just once every 8 hours. However, this instruction is less critical compared to addressing the safety concerns related to drowsiness.

B. Take the medication with food to prevent gastric upset:
Diphenhydramine is generally not known to cause significant gastric upset, so this instruction is less critical. The primary concern with diphenhydramine is its sedative effects rather than gastrointestinal issues.

C. Avoid driving, since this medication causes drowsiness:
Diphenhydramine is known to cause significant drowsiness and sedation. Advising the client to avoid driving is crucial to prevent accidents and ensure their safety, making this the most important instruction.

D. Use sugarless candy or gum to help prevent a dry mouth:
While diphenhydramine can cause dry mouth, using sugarless candy or gum is a helpful but secondary instruction. The primary concern with diphenhydramine is its sedative effect, which affects the client's ability to drive safely.

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Free Nursing Study Resources

Correct Answer is ["37.5"]

Explanation

Convert grams to milligrams: 4 grams = 4000 mg

Determine the concentration of magnesium sulfate in the solution: 4000 mg / 500 mL = 8 mg/mL

Calculate the volume needed to deliver 300 mg/hour:

300 mg/hour ÷ 8 mg/mL = 37.5 mL/hour

Therefore, the nurse should set the infusion pump to deliver 37.5 mL/hour.

A. Request a prescription to change the route of administration and use the available heparin. B. Advise the pharmacy of the need to deliver a vial of heparin to the nursing unit immediately. C. Calculate and administer the equivalent dose of the available low molecular weight heparin. D. Dilute the available heparin in 250 mL of normal saline solution prior to IV administration.

Correct Answer is B

Explanation

A. Request a prescription to change the route of administration and use the available heparin:
Low molecular weight heparin (LMWH) and unfractionated heparin (UFH) are not interchangeable. LMWH is usually administered subcutaneously, whereas UFH is administered intravenously for acute situations. Changing the route of administration without a new prescription would not be appropriate.

B. Advise the pharmacy of the need to deliver a vial of heparin to the nursing unit immediately:
Since the prescription is for intravenous heparin and the available syringes are of LMWH (which is not suitable for IV use), it is essential to contact the pharmacy to provide the correct formulation. Immediate action ensures that the client receives the correct medication promptly.

C. Calculate and administer the equivalent dose of the available low molecular weight heparin:
Calculating and administering LMWH instead of UFH is inappropriate because they are different types of heparin with different indications, dosing regimens, and routes of administration. Using LMWH for an IV prescription could result in ineffective treatment or complications.

D. Dilute the available heparin in 250 mL of normal saline solution prior to IV administration:
LMWH should not be diluted or used in place of UFH for IV administration. This action is incorrect because the available medication is not suitable for the prescribed route and dose. The proper medication needs to be obtained from the pharmacy.

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A client with allergic rhinitis is taking the over-the-counter antihistamine diphenhydramine HCL. Which instruction is most important for the nurse to provide this client?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

The healthcare provider prescribes magnesium sulfate 300 mg/hour IV. The IV bag is contains magnesium sulfate 4 grams in dextrose 5% in water (DW) 500 mL. How many mL/hour should the nurse set the infusion pump? (Enter numerical value only. If rounding is required, round to the nearest tenth.)

Correct Answer is ["37.5"]

Explanation

A client has a prescription for heparin 1,000 units IV STAT. Several pre filled syringes of low molecular weight heparin are available in the client's medication drawer. Which action should the nurse implement?

Correct Answer is B

Explanation

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