A nurse is preparing to administer diphenhydramine 25 mg PO every 6 hours to an older adult patient who has rhinitis.
The available medication is diphenhydramine syrup 12.5 mg/5 mL. How many mL should the nurse administer?
5 mL.
10 mL.
15 mL.
20 mL.
The Correct Answer is B
Choice A rationale
Administering 5 mL of the available medication would only provide 12.5 mg of diphenhydramine, which is half the required dose. Therefore, this is not the correct choice.
Choice B rationale
The available medication is diphenhydramine syrup 12.5 mg/5 mL. To administer the required dose of 25 mg, the nurse would need to give 10 mL of the syrup. This is because 25 mg (required dose) divided by 12.5 mg (dose per 5 mL) equals 2. Therefore, 2 times 5 mL equals 10 mL. This is the correct choice as it provides the exact required dose.
Choice C rationale
Administering 15 mL of the available medication would provide 37.5 mg of diphenhydramine, which is more than the required dose. Therefore, this is not the correct choice.
Choice D rationale
Administering 20 mL of the available medication would provide 50 mg of diphenhydramine, which is double the required dose. Therefore, this is not the correct choice.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Prick the central tip of the patient’s finger: The central tip of the finger has more nerve endings, making it more painful.Instead, the side of the fingertip should be used because it has fewer nerve endings and promotes better blood flow.
B. Apply the first drop of blood to the test strip: The first drop of blood may contain interstitial fluid or contaminants (e.g., alcohol residue), leading to inaccurate readings.Instead, the first drop should be wiped away, and the second drop should be used for testing.
C. Hold the patient’s finger in a dependent position:Holding the finger in a dependent position (below heart level) helps increase blood flow to the fingertip, making it easier to obtain an adequate blood sample without excessive squeezing, which could dilute the sample with tissue fluid.
D. Clean the patient’s finger with hexachlorophene: Hexachlorophene is not recommended for skin antisepsis before blood glucose testing.Instead, alcohol wipes or soap and water should be used. The finger should be fully dried before pricking to avoid dilution of the blood sample.
Correct Answer is D
Explanation
Choice A rationale
Bulging skin around the stoma can be a sign of a hernia, but it’s not uncommon in the early postoperative period. It should be monitored, but it’s not typically a cause for immediate concern.
Choice B rationale
A stoma that protrudes 2 cm (0.8 in) above the abdominal wall is considered normal. The stoma should protrude above the skin to prevent stool from coming into contact with the skin, which can cause irritation and breakdown.
Choice C rationale
A stoma that is moist and beefy red is a sign of a healthy stoma. This indicates that the stoma has a good blood supply and is not ischemic or necrotic.
Choice D rationale
No fecal output from the stoma 24 hours after surgery could indicate a blockage or other complication and should be reported to the provider immediately.
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