a client with a history of myocardial infarction is prescribed a beta blocker what is the primary reason for administering this medication
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Nursing Elites

ATI RN

Final Exam Pathophysiology

1. Why is a beta-blocker prescribed to a client with a history of myocardial infarction?

Correct answer: A

Rationale: The primary reason for administering a beta-blocker to a client with a history of myocardial infarction is to reduce myocardial oxygen demand. By reducing myocardial oxygen demand, beta-blockers help decrease the workload on the heart, making it easier for the heart to function effectively. This is crucial for clients with a history of myocardial infarction to prevent further damage to the heart. Choice B is incorrect because beta-blockers do not aim to increase cardiac output; instead, they help improve cardiac function by reducing workload. Choice C is incorrect because while beta-blockers can help prevent certain arrhythmias, the primary reason for their use in this case is to reduce myocardial oxygen demand. Choice D is incorrect as preventing angina is not the primary purpose of administering beta-blockers to a client with a history of myocardial infarction.

2. A patient with hypogonadism is being treated with testosterone gel. What application instructions should the nurse provide?

Correct answer: B

Rationale: The correct answer is B. Testosterone gel should be applied to the chest or upper arms and allowed to dry completely before dressing to avoid transfer to others. Applying the gel to the face, neck, genitals, scalp, or back is not recommended as these areas may lead to unintentional transfer to others, inappropriate absorption, or potential side effects. Choice A is incorrect as applying the gel to the face and neck can lead to unwanted transfer. Choice C is incorrect as applying the gel to the genitals is not the recommended site for application. Choice D is incorrect as the scalp and back are not appropriate sites for applying testosterone gel.

3. Which clients are at highest risk for pneumonia?

Correct answer: C

Rationale: Clients who are hospitalized and immunocompromised are at the highest risk for pneumonia due to their weakened immune systems. Choice A is incorrect as young and healthy individuals typically have stronger immune systems. Choice B is incorrect because regular exercise can actually boost the immune system and reduce the risk of infections. Choice D is incorrect as having adequate respiratory function does not necessarily correlate with the risk of developing pneumonia.

4. A patient underwent an open cholecystectomy 4 days ago, and her incision is now in the proliferative phase of healing. The nurse knows that the next step in the process of wound healing is:

Correct answer: C

Rationale: In the context of wound healing, after the proliferative phase comes the remodeling phase. During the remodeling phase, the wound gains strength as collagen fibers reorganize, and the scar matures. Inflammation is the initial phase of healing, where the body responds to injury with redness, swelling, and warmth. Maturation is the final stage where the scar tissue continues to undergo changes but is not the immediate next step after the proliferative phase. Coagulation is the process of blood clot formation and is not a phase in wound healing.

5. A nurse is providing discharge teaching to a patient who will be taking sildenafil (Viagra). Which of the following should the nurse include in the instructions?

Correct answer: B

Rationale: The correct answer is B: 'Do not take more than one dose in a 24-hour period.' It is essential for the nurse to emphasize this instruction to prevent potential adverse effects from taking multiple doses of sildenafil. Choice A is incorrect because sildenafil should be taken approximately 30 minutes to 4 hours before sexual activity, not specifically 1 hour before. Choice C is important but not the priority; while vision or hearing loss are potential serious side effects of sildenafil, the immediate concern should be focused on dose frequency. Choice D is incorrect as sildenafil can be taken with or without food.

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