ATI RN
ATI Proctored Pharmacology Test
1. How do ACE inhibitors work?
- A. Block the vasoconstrictor and aldosterone effects of angiotensin II at the receptor site
- B. Block stimulation of beta 1 and beta 2 at the receptor sites
- C. Block the conversion of angiotensin I to the vasoconstrictor angiotensin II
- D. None of the above
Correct answer: C
Rationale: ACE inhibitors work by inhibiting the conversion of angiotensin I to angiotensin II. Angiotensin II is a potent vasoconstrictor, and by blocking its production, ACE inhibitors help dilate blood vessels, reduce blood pressure, and decrease the workload of the heart. Choice A is incorrect because it describes the mechanism of action of angiotensin receptor blockers (ARBs), not ACE inhibitors. Choice B is incorrect as it describes beta-blockers, not ACE inhibitors. Choice D is incorrect as ACE inhibitors do have a specific mechanism of action.
2. Which intervention reduces reservoirs of infection in a healthcare setting?
- A. Placing capped needles and syringes in puncture-resistant containers
- B. Keeping bedside table surfaces clean and dry
- C. Changing dressings that become wet or soiled
- D. Placing tissues and soiled dressings in paper bags
Correct answer: A
Rationale: Placing capped needles and syringes in puncture-resistant containers is the correct intervention to reduce infection reservoirs in healthcare settings. This practice helps prevent accidental needle-stick injuries and contains potentially infectious materials properly. Keeping bedside table surfaces clean and dry (choice B) is essential for preventing the spread of infections but does not directly address reducing reservoirs of infection. Changing dressings that become wet or soiled (choice C) is important for wound care but does not specifically target infection reservoirs. Placing tissues and soiled dressings in paper bags (choice D) is a proper waste disposal practice but does not directly reduce reservoirs of infection in a healthcare setting.
3. A nurse is caring for a patient postoperatively after a thyroidectomy. Which of the following findings should be reported immediately?
- A. Hoarseness
- B. Difficulty swallowing
- C. Numbness in the fingers
- D. Tingling around the mouth
Correct answer: D
Rationale: Tingling around the mouth should be reported immediately as it may indicate hypocalcemia, a serious complication resulting from accidental removal or damage to the parathyroid glands during thyroidectomy. Hoarseness and difficulty swallowing are common post-thyroidectomy symptoms related to the surgery itself and the manipulation of the vocal cords and nearby structures. Numbness in the fingers is not typically associated with immediate serious complications of a thyroidectomy.
4. Although stress exposure initiates integrated responses by multiple systems, which system first activates the most important changes?
- A. Pulmonary
- B. Gastrointestinal
- C. Neuroendocrine
- D. Cardiovascular
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.
5. The system used at the division level and forward comprises six basic modules. Which module is composed of four medical specialists and two vehicles?
- A. Patient holding squad
- B. Surgical squad
- C. Ambulance squad
- D. Area support squad
Correct answer: C
Rationale: The correct answer is 'C: Ambulance squad.' The Ambulance Squad is composed of four medical specialists and two vehicles, making it the module described in the question. Choice A, 'Patient holding squad,' is incorrect as it does not match the composition specified. Choice B, 'Surgical squad,' is incorrect as it focuses on surgical rather than general medical support. Choice D, 'Area support squad,' is incorrect as it does not align with the composition of four specialists and two vehicles.
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