ATI RN
ATI Pathophysiology Exam 2
1. Which of the following is the most likely indication for the use of immunosuppressant agents?
- A. Intractable seizure disorders
- B. Increased intracranial pressure
- C. Organ transplantation
- D. HIV/AIDS with multiple drug resistance
Correct answer: C
Rationale: The correct answer is C: Organ transplantation. Immunosuppressant agents are commonly used in organ transplant recipients to prevent organ rejection by suppressing the immune system. Choices A, B, and D are incorrect. Intractable seizure disorders are often managed with antiepileptic drugs, increased intracranial pressure is managed through various means like surgery and medications, and HIV/AIDS with multiple drug resistance is typically treated with antiretroviral therapy, not immunosuppressant agents.
2. Which of the following describes the etiology of a cerebrovascular accident (CVA)?
- A. A blow to the head from a hard object
- B. Lack of blood flow to part of the brain
- C. Excessive exercise, such as running
- D. A ruptured artery in the heart
Correct answer: B
Rationale: The correct answer is B. A cerebrovascular accident (CVA), or stroke, is often caused by a lack of blood flow to part of the brain. This leads to damage in the brain tissue due to the deprived oxygen and nutrients. Choices A, C, and D are incorrect. A blow to the head from a hard object can cause a traumatic brain injury but is not the etiology of a CVA. Excessive exercise like running does not typically lead to a stroke. A ruptured artery in the heart may result in a heart attack, not a cerebrovascular accident.
3. A 30-year-old has poorly controlled asthma and is taking prednisone 10 mg by mouth once a day. He has been on this regimen for 6 weeks. Abrupt withdrawal or discontinuation of this medication can cause:
- A. adrenal crisis
- B. hypercortisolism
- C. ACTH stimulation
- D. thyroid crisis
Correct answer: A
Rationale: Abrupt withdrawal or discontinuation of prednisone, a corticosteroid, can lead to adrenal crisis. This occurs due to the suppression of the adrenal glands' natural cortisol production caused by prolonged exogenous steroid administration. Adrenal crisis presents with symptoms such as weakness, fatigue, abdominal pain, and hypotension. Hypercortisolism (Cushing syndrome) results from chronic excessive exposure to cortisol, not abrupt withdrawal. ACTH stimulation would be expected in response to low cortisol levels, not as a direct consequence of prednisone withdrawal. Thyroid crisis (thyroid storm) is associated with severe hyperthyroidism and is not directly related to corticosteroid withdrawal.
4. A patient underwent an open cholecystectomy 4 days ago, and her incision is now in the proliferative phase of healing. The nurse knows that the next step in the process of wound healing is:
- A. Inflammation
- B. Maturation
- C. Remodeling
- D. Coagulation
Correct answer: C
Rationale: In the context of wound healing, after the proliferative phase comes the remodeling phase. During the remodeling phase, the wound gains strength as collagen fibers reorganize, and the scar matures. Inflammation is the initial phase of healing, where the body responds to injury with redness, swelling, and warmth. Maturation is the final stage where the scar tissue continues to undergo changes but is not the immediate next step after the proliferative phase. Coagulation is the process of blood clot formation and is not a phase in wound healing.
5. Which of the following mediators of inflammation causes increased capillary permeability and pain?
- A. Serotonin
- B. Histamine
- C. Bradykinin
- D. Nitric oxide
Correct answer: C
Rationale: Bradykinin is the correct answer. It is a potent mediator of inflammation that causes increased capillary permeability and is responsible for the pain associated with inflammation. Serotonin and histamine are also mediators of inflammation, but they are not primarily known for increasing capillary permeability or inducing pain. Nitric oxide is involved in various physiological processes but is not a primary mediator of inflammation that causes increased capillary permeability and pain.
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