Correct Answer: C

Rationale: Reed-Sternberg cells are characteristic of Hodgkin lymphoma. These large abnormal cells have a bi-lobed or multi-lobed nucleus and are essential for diagnosing Hodgkin lymphoma through histological examination. Merkel cells are associated with Merkel cell carcinoma, Schwann cells are related to nerve sheaths, and Kupffer cells are liver macrophages.
Therefore, choices A, B, and D are incorrect for Hodgkin lymphoma.

Correct Answer: A

Rationale: The correct scenario depicting a child with congenital insensitivity to pain is when the child does not cry when injured and fails to respond to painful stimuli. This condition is characterized by the inability to feel and react to pain, resulting in a lack of typical responses such as crying or withdrawal when hurt.
Choice B is incorrect as it describes a child with heightened pain sensitivity, opposite to the insensitivity seen in the condition.
Choice C is incorrect as it suggests the child feels pain but struggles to communicate it, which is not the case with congenital insensitivity to pain.
Choice D is incorrect as it describes a child who is sensitive to minor stimuli and has delayed responses to severe pain, which is not indicative of congenital insensitivity to pain.

Correct Answer: A

Rationale: The correct answer is A. Oral contraceptives can be less effective when taken with certain antibiotics, so patients should be informed about the potential need for additional contraception.
Choice B is incorrect because taking oral contraceptives with food does not affect their effectiveness.
Choice C is incorrect because oral contraceptives may take some time to become fully effective.
Choice D is incorrect because oral contraceptives can interact with other medications, especially certain antibiotics, affecting their efficacy.

Correct Answer: C

Rationale: Before administering a vaccine to a newborn, it is essential for the nurse to check the infant's temperature. This is important to ensure that the newborn does not have a fever, which could indicate an underlying infection or illness. Warming the vaccine to room temperature is not necessary and could be harmful. Vigorously massaging the injection site is not recommended as it can cause discomfort and tissue damage. Dividing the dose for administration to three injection sites is not standard practice for vaccine administration to a newborn.

Correct Answer: A

Rationale: In the treatment of tuberculosis, drug resistance commonly develops against medications like Isoniazid (INH) and rifampin. These two drugs are key components of the standard anti-tuberculosis treatment regimen.

Choices B, C, and D are unrelated medications that are not used in the treatment of tuberculosis. Carbamazepine and phenytoin are anticonvulsants, dextroamphetamine is a stimulant, and propranolol and sotalol are used for cardiovascular conditions.