ATI RN
ATI Pathophysiology Exam 3
1. What typically causes contact dermatitis?
- A. Fungal infection
- B. Long-term disorder from gout
- C. Contact with a skin allergen
- D. Staphylococcal infection
Correct answer: C
Rationale: Contact dermatitis is typically caused by contact with a skin allergen that triggers an allergic reaction. Choice A, fungal infection, is incorrect as contact dermatitis is not caused by fungi. Choice B, long-term disorder from gout, is also incorrect as gout is not typically associated with contact dermatitis. Choice D, Staphylococcal infection, is incorrect as contact dermatitis is primarily an allergic reaction rather than a bacterial infection.
2. Which of the following findings is commonly associated with congestive heart failure?
- A. Decreased jugular venous pressure
- B. Pulmonary edema
- C. Hyperactive bowel sounds
- D. Weight loss
Correct answer: B
Rationale: Pulmonary edema is a common finding in congestive heart failure. In congestive heart failure, the heart is unable to pump effectively, leading to fluid buildup in the lungs, causing pulmonary edema. This results in symptoms like shortness of breath, coughing, and wheezing. Choices A, C, and D are not typically associated with congestive heart failure. Jugular venous pressure is often elevated, not decreased in heart failure. Hyperactive bowel sounds and weight loss are not specific findings for congestive heart failure.
3. Right-sided heart failure is characterized by:
- A. Immunosuppression
- B. Pulmonary edema
- C. Peripheral edema
- D. Coughing
Correct answer: C
Rationale: Right-sided heart failure is characterized by peripheral edema, which results from the buildup of fluid in the body. This fluid accumulates in the extremities due to the heart's inability to effectively pump blood forward. Choices A, B, and D are incorrect. Immunosuppression is not a typical feature of right-sided heart failure. Pulmonary edema is more commonly associated with left-sided heart failure, where fluid accumulates in the lungs. Coughing is a symptom that can be present in various conditions but is not a defining characteristic of right-sided heart failure.
4. What causes hepatic encephalopathy?
- A. A brain infection
- B. Increased ammonia levels in the bloodstream
- C. Decreased albumin blood levels
- D. Untreated chronic bronchitis
Correct answer: B
Rationale: Hepatic encephalopathy is caused by increased ammonia levels in the bloodstream. Ammonia, a byproduct of protein metabolism normally processed by the liver, accumulates in the bloodstream when the liver is unable to function properly. This excess ammonia affects brain function, leading to symptoms of hepatic encephalopathy. Choices A, C, and D are incorrect because they do not directly relate to the pathophysiology of hepatic encephalopathy.
5. When a healthcare professional notices that a patient has type O blood, they realize that anti-_____ antibodies are present in the patient's body.
- A. A only
- B. B only
- C. A and B
- D. O
Correct answer: C
Rationale: Individuals with type O blood have both anti-A and anti-B antibodies in their body. This is because type O blood lacks A or B antigens on the surface of red blood cells, causing the body to produce antibodies against both A and B antigens. Therefore, the correct answer is C. Choice A and B only antibodies are incorrect because type O individuals have both anti-A and anti-B antibodies. Choice D is incorrect as O represents the blood type itself, not the antibodies present in the blood.
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