ATI Pathophysiology Exam 2

Correct Answer: C

Rationale: Helicobacter pylori is a bacterium known to cause peptic ulcer disease by weakening the protective lining of the stomach and duodenum, leading to inflammation and ulcers. While chronic H. pylori infection is a risk factor for stomach cancer, it is not directly linked to colon cancer (Choice A), hiatal hernia (Choice B), or esophageal varices (Choice D). Therefore, the correct answer is C.

Correct Answer: C

Rationale: The correct answer is C, the Neuroendocrine system. When the body is exposed to stress, the neuroendocrine system plays a crucial role in initiating the body's response. This system, particularly through the hypothalamic-pituitary-adrenal axis, triggers a cascade of physiological responses to stress. Choices A, B, and D are incorrect because while other systems like the cardiovascular and gastrointestinal systems also respond to stress, the neuroendocrine system is primarily responsible for the initial and significant changes in the body's stress response.

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: The correct answer is A: Epoetin alfa (Epogen, Procrit). Epoetin alfa is a synthetic form of erythropoietin that stimulates red blood cell production and is commonly used to treat anemia in patients with chronic renal failure. By increasing red blood cell production, epoetin alfa helps raise hemoglobin levels in these patients. Pentoxifylline (Choice B) is not indicated for raising hemoglobin levels in chronic renal failure patients; it is a peripheral vasodilator used to improve blood flow. Estazolam (Choice C) is a benzodiazepine used for treating insomnia and has no role in raising hemoglobin levels. Dextromethorphan hydrobromide (Choice D) is a cough suppressant and is not used to raise hemoglobin levels in patients with chronic renal failure.

Correct Answer: C

Rationale: The correct answer is C. The Tinel sign involves percussing over the median nerve in the wrist to test for carpal tunnel syndrome. Choice A is incorrect as it describes a different action unrelated to the Tinel sign. Choice B is also incorrect as it involves holding the wrist in flexion, which is not part of the Tinel sign assessment. Choice D is incorrect as it mentions using a tuning fork on the thumb, which is not the correct technique for assessing the Tinel sign.