ATI RN
WGU Pathophysiology Final Exam
1. The unique clinical presentation of a 3-month-old infant in the emergency department leads the care team to suspect botulism. Which assessment question posed to the parents is likely to be most useful in the differential diagnosis?
- A. Has your child received all recommended vaccinations?
- B. Has your child been feeding poorly or showing signs of constipation?
- C. Has your child been exposed to any sick individuals?
- D. Has your child been displaying signs of respiratory distress?
Correct answer: B
Rationale: The correct answer is B. Poor feeding and constipation are common early symptoms of infant botulism, which is caused by a neurotoxin that impairs muscle function. Option A is unrelated to the presentation of botulism. Option C does not directly relate to the symptoms of botulism. Option D is more indicative of respiratory issues rather than the constellation of symptoms seen in botulism.
2. Inflammatory exudates are a combination of several types. Which of the following exudates is composed of a large accumulation of leukocytes?
- A. Serous
- B. Purulent
- C. Fibrinous
- D. Hemorrhagic
Correct answer: B
Rationale: The correct answer is B: Purulent. Purulent exudates, or pus, consist primarily of leukocytes and dead cells, indicating a bacterial infection. Serous exudates contain a thin, watery fluid with few leukocytes. Fibrinous exudates are rich in fibrin and are commonly seen in severe inflammation. Hemorrhagic exudates contain red blood cells due to blood vessel damage.
3. Which of the following are signs and symptoms of myocardial infarction?
- A. Persistent chest pain which may radiate to the arm
- B. Brief sternal chest pain on inspiration
- C. Rapid respirations with left-sided weakness and numbness
- D. Left upper quadrant abdominal pain which radiates to the back and shoulder
Correct answer: A
Rationale: The correct answer is A. Persistent chest pain that may radiate to the arm is a classic symptom of myocardial infarction. This pain is typically described as crushing, pressure-like, or squeezing. Choice B is incorrect because brief sternal chest pain on inspiration is not characteristic of myocardial infarction. Choice C is incorrect because rapid respirations with left-sided weakness and numbness are not typical symptoms of myocardial infarction. Choice D is incorrect because left upper quadrant abdominal pain that radiates to the back and shoulder is not a common presentation of myocardial infarction.
4. Which of the following correctly identifies the plasma protein inflammatory mediator systems?
- A. Phagocytic, interferon, and complement systems.
- B. Complement, fibrinolytic, and clotting systems.
- C. Complement, clotting, and kinin systems.
- D. Complement, clotting, and acute phase reactant systems.
Correct answer: C
Rationale: The correct answer is C: Complement, clotting, and kinin systems. These are the three main plasma protein inflammatory mediator systems. The complement system helps in inflammation and immune responses, the clotting system is involved in blood coagulation, and the kinin system regulates inflammation and blood pressure. Choice A is incorrect because interferon is not part of the plasma protein inflammatory mediator systems. Choice B is incorrect because the fibrinolytic system is not a primary inflammatory mediator system. Choice D is incorrect because acute phase reactants are not part of the plasma protein inflammatory mediator systems.
5. Which of the following is a complication of compartment syndrome?
- A. Hemorrhage
- B. Pain and tissue damage
- C. Increased limb function
- D. Chronic kidney disease
Correct answer: B
Rationale: The correct answer is B: Pain and tissue damage. Compartment syndrome occurs due to increased pressure within the muscle compartments, leading to pain and tissue damage. Hemorrhage (choice A) is not a typical complication of compartment syndrome. Increased limb function (choice C) is not a complication but rather a potential improvement if the condition is managed appropriately. Chronic kidney disease (choice D) is unrelated to compartment syndrome.
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