Correct Answer: A

Rationale: The correct answer is to secure a clean container before sputum collection. This is essential to prevent contamination of the specimen, ensuring accurate test results and avoiding the introduction of external particles or bacteria. Choice B is incorrect because discarding the container if the outside becomes dirty is not necessary; the cleanliness of the inside is crucial. Choice C is incorrect as rinsing the client's mouth with Listerine before collection may introduce unwanted substances that can affect the test results. Choice D is incorrect as the amount of sputum required can vary depending on the test, and specifying a specific amount without medical guidance is not appropriate.

Correct Answer: C

Rationale: Most peptic ulcers occur in the duodenum, particularly in cases of duodenal ulcers. The correct answer is the duodenum because it is the most common site for peptic ulcers to develop. Peptic ulcers rarely occur in the esophagus and jejunum, making choices A, B, and D incorrect.

Correct Answer: A

Rationale: The correct answer is A: Red meat. Red meat is high in purines, which can exacerbate gout attacks. Gout is a form of arthritis that occurs when high levels of uric acid in the blood lead to the formation of urate crystals in the joints. Purine-rich foods can increase uric acid levels, leading to gout symptoms. Chicken and fish are lower in purines compared to red meat, making them better choices for individuals with gout. Dairy products are generally considered safe for gout patients and may even have a protective effect against gout.

Correct Answer: C

Rationale: The correct answer is C because epistaxis and headache in a client with hypertension are signs of a hypertensive crisis that necessitate immediate intervention. Choice A is incorrect as constipation in a client with an abdominal aortic aneurysm, while important, does not indicate an immediate crisis. Choice B is incorrect as a client on bed rest ambulating to the bathroom is a positive sign. Choice D is incorrect because a decreased pedal pulse in arterial occlusive disease should be addressed promptly, but it does not indicate an acute emergency like a hypertensive crisis.

Correct Answer: B

Rationale: The correct answer is B, Diabetes insipidus. Diabetes insipidus can develop after a head injury due to damage to the hypothalamus or pituitary gland, leading to a deficiency in antidiuretic hormone (ADH). Pheochromocytoma (choice A) is a tumor of the adrenal gland and is not directly related to closed head injury or increased intracranial pressure. Hashimoto's disease (choice C) is an autoimmune disorder affecting the thyroid gland, not commonly associated with head injuries. Gynecomastia (choice D) is the development of breast tissue in males and is not an endocrine disorder typically linked to closed head injuries.