A nurse performs an admission assessment on a client with a diagnosis of tuberculosis. The nurse reviews the results of which diagnostic test that will confirm this diagnosis?

Correct Answer: B

Rationale: The correct answer is B: Sputum culture. This test confirms the diagnosis of tuberculosis by identifying the presence of Mycobacterium tuberculosis in the sputum sample. It is the gold standard for diagnosing active tuberculosis. Bronchoscopy (A) is invasive and used to visualize the airways, not for confirming TB diagnosis. Chest x-ray (C) may show characteristic findings of TB, but it does not confirm the diagnosis. Tuberculin skin test (D) only indicates exposure to TB bacteria, not active infection.

Correct Answer: B

Rationale: The correct answer is B because pleurisy is inflammation of the pleural membrane, causing pain during breathing due to friction between the inflamed layers. Choice A is incorrect as alveoli are not directly affected in pleurisy. Choice C is incorrect as pleurisy does not cause cramps in the diaphragm. Choice D is incorrect as the vagus nerve irritation is not a characteristic feature of pleurisy.

Correct Answer: D

Rationale: The correct answer is D because hemoglobin releases oxygen more readily in highly active tissues due to increased metabolic demand for oxygen. This is known as the Bohr effect. Choice A is incorrect as hemoglobin binds oxygen in the lungs where oxygen partial pressure is high. Choice B is incorrect as hemoglobin actually releases oxygen in acidic conditions to increase oxygen delivery to tissues. Choice C is incorrect as hemoglobin releases oxygen in warmer areas to facilitate oxygen delivery to metabolically active tissues.

Correct Answer: A

Rationale: The correct answer is A because it accurately describes the processes involved in respiration. Inspiration is the intake of oxygen, exchange of gases occurs in the lungs where oxygen is taken in and carbon dioxide is released, and expiration is the process of exhaling carbon dioxide. Option B is incorrect because aspiration refers to the act of inhaling foreign objects or substances, not a part of normal respiration. Option C is incorrect because it does not accurately describe the sequence of processes in respiration. Option D is incorrect as the processes listed in option A are indeed involved in respiration.

Correct Answer: A

Rationale: The correct answer is A (158 and 116 mm Hg) because in inspired air, the partial pressure of oxygen is around 158 mm Hg, which corresponds to the atmospheric oxygen level. During expiration, some oxygen is exchanged for carbon dioxide, leading to a decrease in oxygen partial pressure to around 116 mm Hg. Choice B is incorrect because the partial pressure of oxygen in expired air is not as high as 40 mm Hg, which is too low for the oxygen content in the air we breathe. Choice C is incorrect because the partial pressure of oxygen in inspired air is not exactly 100 mm Hg, and the partial pressure in expired air is not as close to 95 mm Hg. Choice D is incorrect because the partial pressure of oxygen in inspired air is not as low as 40 mm Hg, and the partial pressure in expired air is not as high as 95 mm Hg.