Correct Answer: A

Rationale: Correct answer: Applying zinc oxide ointment to the irritated area is the most appropriate action for diaper dermatitis. Zinc oxide is a barrier cream that helps protect the skin and promote healing. Choice B is incorrect because using store-bought baby wipes may contain chemicals or fragrances that can further irritate the skin. Choice C is incorrect as talcum powder can also worsen the condition by drying out the skin. Choice D is incorrect because a warm compress is not typically used for diaper dermatitis; it may provide relief for other conditions but is not the best option for diaper dermatitis.

Correct Answer: B

Rationale: The correct answer is B because advocating for a client should not be dependent on the client's ability to ask for it personally. Advocacy is crucial to ensure clients' rights are upheld, especially when they are unable to express their wishes. Choice A is incorrect as intervening in a conflict may not always be advocating for the client's best interests. Choice C is incorrect because the family should not make health care decisions for the client without their input. Choice D is incorrect as it disregards the importance of client autonomy and involvement in decision-making.

Correct Answer: A

Rationale: The correct answer is A: Serotonin syndrome. When a client takes St. John's wort, a herbal supplement, along with citalopram, a selective serotonin reuptake inhibitor (SSRI), there is a risk of developing serotonin syndrome. Serotonin syndrome is a potentially life-threatening condition characterized by symptoms such as confusion, agitation, fever, sweating, shivering, tremors, muscle rigidity, and in severe cases, seizures and coma. It is crucial for the nurse to monitor the client for these symptoms. Choices B, C, and D are incorrect because tardive dyskinesia is associated with long-term use of antipsychotic medications, pseudo-parkinsonism is a side effect of antipsychotic medications like haloperidol, and acute dystonia is a side effect of antipsychotic medications characterized by sustained muscle contractions.

Correct Answer: D

Rationale: The correct answer is D. A low potassium level (3.1 mEq/L) can increase the risk of digoxin toxicity. Hypokalemia can potentiate the effects of digoxin on the heart, leading to serious dysrhythmias. Choices A, B, and C are within normal ranges and do not indicate a need to withhold digoxin.

Correct Answer: B

Rationale: The correct answer is B. The nonstress test takes about 10 minutes and evaluates fetal heart rate in response to fetal movement. Choice A is incorrect because fasting is not required for a nonstress test. Choice C is incorrect as a full bladder is not necessary for this test. Choice D is incorrect as blood glucose checking is not typically part of a nonstress test.