A secondary immune response differs from the primary immune response in that:

Correct Answer: A

Rationale: The correct answer is A. A secondary immune response is characterized by being more rapid than the primary response and results in higher antibody levels. This is because memory B cells are already present and can quickly differentiate into plasma cells upon re-exposure to the antigen. Choice B is incorrect because a secondary immune response is faster, not slower, than the primary response, and it does lead to higher antibody levels. Choice C is incorrect because a secondary response does not result in a decrease in antibodies; instead, it leads to an increase. Choice D is incorrect because a secondary immune response is not limited to hyperallergic reactions, and it results in an increase, not a decrease, in antibodies.

Correct Answer: A

Rationale: The correct answer is A: Hepatotoxicity. Androgen therapy, such as testosterone, can lead to hepatotoxicity, which is toxic to the liver. Therefore, the nurse should monitor the patient's liver function. Choices B, C, and D are incorrect because androgen therapy is not typically associated with nephrotoxicity, cardiotoxicity, or pulmonary toxicity.

Correct Answer: D

Rationale: The correct side effect that the nurse should inform the patient about when receiving testosterone enanthate therapy for delayed puberty is increased aggression. Testosterone therapy can lead to mood changes, including increased aggression in some individuals. Therefore, it is essential for healthcare providers to educate patients about this potential side effect. Choices A, B, and C are incorrect because testosterone therapy is more likely to increase libido, promote muscle mass growth, and may cause breast tenderness due to hormonal imbalances.

Correct Answer: C

Rationale: During estradiol therapy, the nurse should monitor liver function tests. Estradiol can potentially impact liver function, making it essential to assess for any signs of liver dysfunction. Monitoring blood pressure (Choice A) is not directly related to estradiol therapy. While blood glucose levels (Choice B) should be monitored in patients taking certain medications like corticosteroids or antipsychotics, it is not typically necessary for patients on estradiol therapy. Kidney function tests (Choice D) are not the priority for monitoring during estradiol therapy, as the liver is more commonly affected.

Correct Answer: B

Rationale: The correct answer is B: Use of nitrates. Sildenafil (Viagra) is contraindicated in patients taking nitrates due to the risk of severe hypotension. Nitrates combined with sildenafil can lead to a dangerous drop in blood pressure. Choices A, C, and D are incorrect because a history of peptic ulcer disease, use of antihypertensive medications, or a history of hypertension are not direct contraindications for sildenafil use.