Correct Answer: D

Rationale: The correct answer is D. Spinal cord injuries commonly occur due to hyperextension, hyperflexion, and compression. Hyperextension and hyperflexion refer to the excessive bending or stretching of the spinal cord, while compression is the exertion of pressure on the spinal cord. These mechanisms can lead to damage such as contusions, lacerations, and compression of the spinal cord. Choices A, B, and C are incorrect as they do not accurately represent the major mechanisms of spinal cord injuries.

Correct Answer: B

Rationale: Atherosclerotic plaques form initially due to injury to the coronary artery endothelium, which triggers a cascade of events leading to plaque buildup. Choice A is incorrect because atherosclerotic plaques do not form due to an interruption of blood flow to the brain. Choice C is incorrect as statin medications are actually used to help lower cholesterol and reduce the risk of plaque formation. Choice D is incorrect as poor dietary modifications can contribute to atherosclerosis but are not the initial cause of plaque formation.

Correct Answer: A

Rationale: The correct potential adverse effect of finasteride (Proscar) that the nurse should educate the patient about is sexual dysfunction. Finasteride is known to cause sexual side effects such as decreased libido, erectile dysfunction, and ejaculation disorders. Urethral burning, kidney stones, and visual disturbances are not commonly associated with finasteride use, making them incorrect choices for this scenario.

Correct Answer: B

Rationale: A history of IV drug use is significant in cases of fever of unknown origin, as it increases the risk of infections like endocarditis, which can present with persistent fever. Smoking (Choice A) is not directly linked to FUO. While a history of STD treatment (Choice C) may be relevant, it is less likely to be associated with FUO compared to IV drug use. Family history of cardiac disease (Choice D) is not typically a primary factor in the diagnosis of FUO.

Correct Answer: A

Rationale: When a patient on oral contraceptives experiences breakthrough bleeding, the nurse should assess the patient's adherence to the medication schedule. Breakthrough bleeding is often a sign of non-adherence, potentially reducing the effectiveness of the contraceptives. Assessing the adherence to the schedule helps in determining if the medication is being taken correctly. The possibility of pregnancy (choice B) is less likely if the patient has been taking the contraceptives as prescribed. Increasing the dosage (choice C) without assessing adherence first can lead to unnecessary medication adjustments. Evaluating the effectiveness of the current oral contraceptive (choice D) comes after assessing adherence to the schedule.