ATI RN
ATI Pathophysiology Exam 2
1. What are the major mechanisms of spinal cord injuries?
- A. Hypoextension, expansion, hyperflexion
- B. Hyperflexion, expansion, hypometabolism
- C. Hypermetabolism, compression, hyperextension
- D. Hyperextension, hyperflexion, compression
Correct answer: D
Rationale: The correct answer is D. Spinal cord injuries commonly occur due to hyperextension, hyperflexion, and compression. Hyperextension and hyperflexion refer to the excessive bending or stretching of the spinal cord, while compression is the exertion of pressure on the spinal cord. These mechanisms can lead to damage such as contusions, lacerations, and compression of the spinal cord. Choices A, B, and C are incorrect as they do not accurately represent the major mechanisms of spinal cord injuries.
2. Organ systems consist of organs, which consist of tissues.
- A. True
- B. False
- C. Not Sure
- D. None of the above
Correct answer: A
Rationale: The statement is true. Organ systems are made up of organs, which in turn are composed of tissues. Organs are structures made up of two or more types of tissues that work together to perform specific functions. Tissues, on the other hand, are groups of cells that work together to perform a specific function. Therefore, organs are made up of tissues, and organ systems consist of organs.
3. During a funduscopic examination of a school-age child, the nurse notes a brilliant, uniform red reflex in both eyes. The nurse should recognize that this is which?
- A. A normal finding
- B. A sign of a possible visual defect and a need for vision screening
- C. An abnormal finding requiring referral to an ophthalmologist
- D. A sign of small hemorrhages, which usually resolve spontaneously
Correct answer: A
Rationale: A brilliant, uniform red reflex in both eyes is a normal finding, indicating that the retina is healthy and there are no significant obstructions in the visual pathway.
4. A client with angina is seeking a prescription for sildenafil to manage erectile dysfunction. Which of the following medications is contraindicated with Sildenafil?
- A. Aspirin
- B. Isosorbide
- C. Clopidogrel
- D. Atorvastatin
Correct answer: B
Rationale: Isosorbide, an organic nitrate used for angina, is contraindicated with sildenafil due to the risk of fatal hypotension. Concurrent use of these medications can lead to severe hypotension. Patients are advised to avoid taking nitrate medications for 24 hours after using isosorbide to prevent this dangerous interaction.
5. A community health nurse is conducting a class on what to expect during pregnancy. What instruction should the nurse include on weight gain?
- A. Failure to obtain the required weight gain during pregnancy will increase the risk of preterm birth.
- B. An obese client should not gain as much weight as a client with a normal body mass index.
- C. A client with a normal body mass index should plan on gaining 50 pounds.
- D. Clients do not need to eat for two when they are pregnant.
Correct answer: A
Rationale: Adequate weight gain during pregnancy is essential as failure to obtain the required weight gain can increase the risk of preterm birth. Choice B is incorrect because it is important for obese clients to gain an appropriate amount of weight during pregnancy, not the same as those with a normal body mass index. Choice C is incorrect as gaining 50 pounds for a client with a normal body mass index is excessive. Choice D is incorrect as the common saying 'eating for two' during pregnancy is a misconception; pregnant individuals do not need to double their caloric intake.
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