ATI RN
ATI Pathophysiology Exam 1
1. A patient has been prescribed mifepristone (RU-486) to terminate a pregnancy. How does this drug achieve its therapeutic effect?
- A. By inhibiting the action of progesterone, which is necessary to maintain pregnancy.
- B. By increasing estrogen levels, which induce uterine contractions.
- C. By altering the uterine lining, preventing implantation.
- D. By stimulating uterine contractions, which expel the embryo.
Correct answer: A
Rationale: Mifepristone (RU-486) functions by inhibiting the action of progesterone, a hormone crucial for maintaining pregnancy. By blocking progesterone, mifepristone disrupts the uterine environment necessary for pregnancy continuation, ultimately leading to termination. Choice B is incorrect because mifepristone does not increase estrogen levels; instead, it acts on progesterone. Choice C is incorrect as mifepristone's mechanism does not involve altering the uterine lining to prevent implantation. Choice D is incorrect because mifepristone does not directly stimulate uterine contractions; its primary action is through progesterone inhibition.
2. A client who has glaucoma and a new prescription for timolol eyedrops is receiving teaching from a nurse. Which of the following statements indicates an understanding of the teaching?
- A. I will place the eye drops in the center of my eye.
- B. I will place pressure on the corner of my eye after using the drops.
- C. I should expect my tears to turn red after using the drops.
- D. I should expect the drops to appear cloudy.
Correct answer: B
Rationale: The correct answer is B because placing pressure on the corner of the eye after using the drops helps in better absorption. Option A is incorrect because eye drops should be placed in the conjunctival sac, not the center of the eye. Option C is incorrect because tears turning red is not an expected outcome of using timolol eyedrops. Option D is incorrect because timolol eyedrops should not appear cloudy.
3. A nurse witnesses a colleague administering the wrong IV solution to a client. What should the nurse do first?
- A. Complete an incident report.
- B. Ask the colleague if they intend to report the error.
- C. Call the healthcare provider to notify them of the error.
- D. Notify the supervisor about the situation.
Correct answer: B
Rationale: The correct first step for the nurse to take in this situation is to ask the colleague if they intend to report the error. It is important to address the error promptly and directly with the colleague involved to ensure that the appropriate actions are taken to correct the mistake and prevent harm to the client. Completing an incident report, calling the healthcare provider, or notifying the supervisor can be done after discussing the error with the colleague. Immediate communication with the colleague directly involved in the error is crucial to address the situation effectively.
4. A client in a coronary care unit is being admitted after CPR post cardiac arrest. The client is receiving IV lidocaine at 2 mg/min. When the client asks the nurse why he is receiving that medication, the nurse should explain that it has which of the following actions?
- A. Prevents dysrhythmias
- B. Slows intestinal motility
- C. Dissolves blood clots
- D. Relieves pain
Correct answer: A
Rationale: Lidocaine is administered to prevent dysrhythmias by delaying conduction in the heart and reducing the automaticity of heart tissue. This action helps stabilize the heart's electrical activity and prevent life-threatening arrhythmias post-cardiac arrest. Choices B, C, and D are incorrect as lidocaine is not used for slowing intestinal motility, dissolving blood clots, or relieving pain in this context.
5. A nurse is reviewing the medical records of a client who has thrombocytopenia. Which of the following actions should the nurse include in the care plan?
- A. Encourage the client to floss daily.
- B. Remove fresh flowers from the client's room.
- C. Provide the client with a stool softener.
- D. Avoid serving raw vegetables.
Correct answer: C
Rationale: The correct answer is to provide the client with a stool softener. Thrombocytopenia is a condition characterized by a low platelet count, leading to decreased blood clotting ability. Providing a stool softener is essential to prevent constipation and straining during bowel movements, which can lead to bleeding in thrombocytopenic clients. Encouraging the client to floss daily (Choice A) is a good oral hygiene practice but is not directly related to managing thrombocytopenia. Removing fresh flowers from the client's room (Choice B) is important for immunocompromised clients to prevent exposure to pathogens but is not specifically related to thrombocytopenia. Avoiding serving raw vegetables (Choice D) is a precaution to reduce the risk of infection in immunocompromised clients but does not directly address the complications of thrombocytopenia.
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