ATI RN
MSN 570 Advanced Pathophysiology Final 2024
1. Macular degeneration occurs as a result of:
- A. loss of lens accommodation
- B. detachment of the retina
- C. increased intraocular pressure
- D. impaired blood supply leading to cellular waste accumulation and ischemia
Correct answer: impaired blood supply leading to cellular waste accumulation and ischemia
Rationale: Macular degeneration is a condition that affects the macula, a part of the retina responsible for central vision. It is primarily caused by impaired blood supply to the macula, leading to cellular waste accumulation and ischemia. This results in the death of photoreceptor cells and ultimately vision loss. Choices A, B, and C are incorrect because macular degeneration is not related to the loss of lens accommodation, detachment of the retina, or increased intraocular pressure. The correct answer directly addresses the underlying pathophysiology of macular degeneration.
2. A healthcare professional is reviewing laboratory results for a client who is receiving heparin via continuous IV infusion. Which of the following results indicates that the heparin infusion should be increased?
- A. aPTT of 90 seconds
- B. Platelet count of 150,000/mm³
- C. INR of 1.0
- D. Hgb of 15 g/dL
Correct answer: A
Rationale: An aPTT of 90 seconds is above the therapeutic range for heparin, which typically falls between 60-80 seconds. This indicates that the current heparin dose is too high, and the infusion rate should be decreased to avoid excessive anticoagulation and the risk of bleeding. Monitoring aPTT is crucial in adjusting heparin therapy to maintain it within the therapeutic range.
3. The healthcare provider is caring for a client who has heart failure and a history of asthma. The provider reviews the orders and recognizes that clarification is needed for which of the following medications?
- A. Carvedilol
- B. Fluticasone
- C. Captopril
- D. Isosorbide dinitrate
Correct answer: B: Fluticasone
Rationale: The correct answer is Fluticasone. Carvedilol, Captopril, and Isosorbide dinitrate are commonly used in heart failure management and do not typically pose significant risks for clients with a history of asthma. However, Fluticasone is a corticosteroid used to manage asthma but can potentially worsen heart failure symptoms due to its anti-inflammatory effects. Therefore, the nurse should seek clarification regarding the prescription of Fluticasone for a client with heart failure and a history of asthma.
4. A healthcare provider gives a verbal order for a medication. The nurse is uncomfortable with the order and questions its appropriateness. What should the nurse do?
- A. Refuse to administer the medication and document the refusal.
- B. Clarify the order with the provider before proceeding.
- C. Administer the medication and monitor the patient.
- D. Call a pharmacy consult to discuss the medication.
Correct answer: B
Rationale: The correct action for the nurse to take when uncomfortable with a verbal order for medication is to clarify the order with the provider before proceeding. This ensures patient safety by confirming the appropriateness of the order and prevents any potential harm. Choice A is incorrect because refusing to administer the medication without clarification may delay necessary treatment for the patient. Choice C is incorrect as administering the medication without clarification could pose risks if the order is indeed inappropriate. Choice D is also incorrect as the first step should be direct clarification with the provider before involving others.
5. The nurse is preparing a postoperative nursing care plan for the client recovering from a hemorrhoidectomy. Which intervention should the nurse implement?
- A. Establish a rapport with the client to decrease embarrassment during site assessment
- B. Encourage the client to lie in the lithotomy position twice a day
- C. Milk the tube inserted during surgery to facilitate the passage of flatus
- D. Digitally dilate the rectal sphincter to express old blood
Correct answer: A
Rationale: Establishing rapport with the client is crucial in postoperative care to create a trusting relationship, reduce embarrassment, and enhance comfort during assessments. Encouraging the client to lie in the lithotomy position is not recommended after a hemorrhoidectomy as it can be uncomfortable and may disrupt wound healing. Milking the tube inserted during surgery is not a standard practice and could lead to complications. Digitally dilating the rectal sphincter is not indicated post-hemorrhoidectomy and can cause harm to the client.
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