A nurse is caring for a client who has a severe allergic reaction to a medication and requires immediate administration of diphenhydramine. The nurse should administer the medication by which of the following routes?
Intramuscular
Subcutaneous
Intravenous
Oral
The Correct Answer is C
Answer: C. Intravenous injection is the fastest route for administering diphenhydramine in a severe allergic reaction because it provides immediate onset of action and avoids the first-pass metabolism in the liver.
A and B are incorrect because intramuscular and subcutaneous injections have slower absorption rates than intravenous injection and may not provide adequate relief in an emergency situation.
D is incorrect because oral administration of diphenhydramine has the slowest absorption rate and onset of action and is subject to first-pass metabolism in the liver.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Infusion reaction is a common adverse effect of amphotericin B that occurs within 1 to 3 hours of starting the infusion and causes symptoms such as fever, chills, headache, nausea, vomiting, and hypotension.
A is incorrect because anaphylaxis is a severe allergic reaction that causes symptoms such as urticaria, angioedema, bronchospasm, and shock.
C is incorrect because nephrotoxicity is another adverse effect of amphotericin B that causes renal impairment and electrolyte imbalances.
D is incorrect because ototoxicity is an adverse effect of some antibiotics such as gentamicin and vancomycin that causes hearing loss and tinnitus.
Correct Answer is C
Explanation
Answer: C. Intravenous injection is the fastest route for administering diphenhydramine in a severe allergic reaction because it provides immediate onset of action and avoids the first-pass metabolism in the liver.
A and B are incorrect because intramuscular and subcutaneous injections have slower absorption rates than intravenous injection and may not provide adequate relief in an emergency situation.
D is incorrect because oral administration of diphenhydramine has the slowest absorption rate and onset of action and is subject to first-pass metabolism in the liver.
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