ATI RN
ATI Pathophysiology Exam 2
1. A client with a history of deep vein thrombosis (DVT) is receiving anticoagulant therapy. Which complication should the nurse monitor for?
- A. Pulmonary embolism
- B. Gastrointestinal bleeding
- C. Hemorrhagic stroke
- D. Renal insufficiency
Correct answer: A
Rationale: The correct answer is A, pulmonary embolism. In a client with a history of deep vein thrombosis (DVT) receiving anticoagulant therapy, the nurse should monitor for pulmonary embolism, as it is a serious complication. Pulmonary embolism occurs when a blood clot dislodges from the veins and travels to the lungs, potentially causing life-threatening consequences. Choices B, gastrointestinal bleeding, C, hemorrhagic stroke, and D, renal insufficiency, are not directly associated with deep vein thrombosis or anticoagulant therapy. While these complications may occur in other situations, they are not the primary concern when managing a client with a history of DVT.
2. Which of the following is a common cause of mechanical small intestine obstruction?
- A. Infection
- B. Postoperative adhesions
- C. Tumors
- D. Foreign body
Correct answer: B
Rationale: Postoperative adhesions are a common cause of mechanical small intestine obstruction. Adhesions can form after abdominal surgery, causing bands of scar tissue that may twist or pull the intestines, leading to obstruction. This is a more common cause compared to infection, tumors, or foreign bodies. Infection may lead to inflammation but is not a typical cause of mechanical obstruction. Tumors and foreign bodies can cause blockages but are less common than postoperative adhesions.
3. What is the primary cause of primary hypercholesteremia?
- A. High-density lipoprotein (HDL) defects
- B. Monogenic mutations, sedentary lifestyle, and high cholesterol diet
- C. Polygenic mutations and environmental factors
- D. Low-density lipoprotein (LDL) receptor mutation with defects in breakdown
Correct answer: D
Rationale: The correct answer is 'Low-density lipoprotein (LDL) receptor mutation with defects in breakdown.' Primary hypercholesteremia is mainly caused by mutations in the LDL receptor, leading to impaired clearance of LDL cholesterol from the blood. This results in high levels of LDL cholesterol in the bloodstream. Choices A, B, and C are incorrect because they do not directly relate to the primary cause of primary hypercholesteremia.
4. A toddler is displaying signs/symptoms of weakness and muscle atrophy. The pediatric neurologist suspects it may be a lower motor neuron disease called spinal muscular atrophy (SMA). The client's family asks how he got this. The nurse will respond:
- A. This could result from playing in soil and then ingesting bacteria that is now attacking his motor neurons.
- B. No one really knows how this disease is formed. We just know that in time, he may grow out of it.
- C. This is a degenerative disorder that tends to be inherited as an autosomal recessive trait.
- D. This is a segmental demyelination disorder that affects all nerve roots and eventually all muscle groups as well.
Correct answer: C
Rationale: The correct answer is C. Spinal muscular atrophy (SMA) is an inherited disorder, often autosomal recessive, that affects lower motor neurons. Choice A is incorrect because SMA is not caused by ingesting bacteria from playing in soil. Choice B is incorrect as SMA is not something that a person grows out of. Choice D is incorrect because SMA is not a demyelination disorder that affects nerve roots and muscle groups.
5. What is responsible for initiating clonal selection?
- A. B cells
- B. T cells
- C. Antigens
- D. Lymphocytes
Correct answer: C
Rationale: Antigens are the correct answer as they are the molecules that trigger the immune response by binding to specific B or T cells. This binding activates these cells, leading to their proliferation and differentiation to fight off the antigen. B cells and T cells are the responders to antigens, not the initiators of clonal selection. Lymphocytes is a broad term encompassing both B and T cells, so it is not the specific factor responsible for initiating clonal selection.
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