ATI RN
Pathophysiology Practice Exam
1. A 44-year-old man presents with muscle weakness and fatigue. He states that he has experienced difficulty climbing stairs and even holding his arms up to comb his hair. Which test is most likely to help confirm the diagnosis?
- A. Electromyography (EMG)
- B. Nerve conduction studies
- C. Muscle biopsy
- D. Blood test for autoantibodies
Correct answer: A
Rationale: The correct answer is Electromyography (EMG). EMG is commonly used to diagnose conditions involving muscle weakness and fatigue, such as myasthenia gravis. Nerve conduction studies primarily assess nerve function rather than muscle involvement. While a muscle biopsy can provide valuable information, EMG is more specific for evaluating muscle function in this context. A blood test for autoantibodies may be helpful in certain autoimmune conditions but is not the primary test for confirming the diagnosis based on the patient's symptoms of muscle weakness and fatigue.
2. A patient with a history of osteoporosis is prescribed alendronate (Fosamax). What instructions should the nurse provide to ensure the effectiveness of the medication?
- A. Take the medication with a full glass of water and remain upright for at least 30 minutes to prevent esophageal irritation and ensure proper absorption.
- B. Take the medication with milk to enhance calcium absorption.
- C. Take the medication at bedtime to ensure absorption during sleep.
- D. Take the medication with food to prevent nausea.
Correct answer: A
Rationale: The correct answer is A. Alendronate should be taken with a full glass of water and patients should remain upright for at least 30 minutes to prevent esophageal irritation and ensure proper absorption. Taking the medication with milk (choice B) is not recommended as it may interfere with the absorption of alendronate. Taking the medication at bedtime (choice C) is not necessary for optimal absorption. Taking the medication with food (choice D) is also not recommended as food can reduce the absorption of alendronate.
3. 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.
4. When a healthcare professional is reviewing lab results and notices that the erythrocytes contain an abnormally low concentration of hemoglobin, the healthcare professional calls these erythrocytes:
- A. Hyperchromic
- B. Hypochromic
- C. Macrocytic
- D. Microcytic
Correct answer: B
Rationale: Erythrocytes with an abnormally low concentration of hemoglobin are called hypochromic. Hyperchromic refers to erythrocytes with an abnormally high concentration of hemoglobin. Macrocytic indicates larger than normal red blood cells, while microcytic refers to smaller than normal red blood cells. Therefore, in this scenario, the correct term is hypochromic.
5. When does pain in the lower extremities due to peripheral artery disease usually worsen?
- A. with rest because blood flow decreases.
- B. with elevation of the extremity because blood is diverted away.
- C. when the leg is in a dependent position because blood pools.
- D. when the leg is touched or massaged because cytokines are released.
Correct answer: B
Rationale: Pain in the lower extremities due to peripheral artery disease usually worsens with elevation of the extremity because blood is diverted away from the affected area, leading to decreased perfusion and exacerbation of symptoms. Choices A, C, and D are incorrect because resting, dependent position, and touch/massage do not typically worsen the pain associated with peripheral artery disease.
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