ATI RN
ATI Pathophysiology Exam 2
1. What is the primary role of albumin in the blood?
- A. Transport oxygen throughout the body.
- B. Serve as a key clotting factor.
- C. Maintain osmotic pressure and fluid balance.
- D. Act as an immune response molecule.
Correct answer: C
Rationale: The correct answer is C: Maintain osmotic pressure and fluid balance. Albumin plays a crucial role in maintaining osmotic pressure by helping to retain fluid within the blood vessels. This function is essential for regulating blood volume and preventing fluid from leaking out into tissues. Choices A, B, and D are incorrect because albumin is not primarily responsible for transporting oxygen, acting as a clotting factor, or functioning as an immune response molecule in the blood.
2. A patient with erectile dysfunction is prescribed sildenafil (Viagra). What condition would contraindicate the use of this medication?
- A. History of hypertension
- B. Use of nitrates
- C. Recent use of antihypertensive medications
- D. History of peptic ulcer disease
Correct answer: B
Rationale: The correct answer is B: 'Use of nitrates.' Sildenafil (Viagra) is contraindicated in patients taking nitrates due to the risk of severe hypotension. Nitrates and sildenafil both cause vasodilation, and their combined use can lead to a dangerous drop in blood pressure. Choices A, C, and D are incorrect because a history of hypertension, recent use of antihypertensive medications, or a history of peptic ulcer disease are not direct contraindications for using sildenafil.
3. After a 27-year-old woman with epilepsy had a generalized seizure, she feels tired and falls asleep. This is:
- A. an ominous sign.
- B. normal and termed the postictal period.
- C. a reflection of an underlying brain tumor.
- D. only worrisome if there are focal neurologic deficits after.
Correct answer: normal and termed the postictal period.
Rationale: The correct answer is B: normal and termed the postictal period. The postictal period is a common phase following a seizure where the individual may experience fatigue, confusion, or sleepiness. It is a normal part of the seizure event and does not necessarily indicate a serious issue. Choice A is incorrect because feeling tired and falling asleep after a seizure is not an ominous sign but rather a typical postictal symptom. Choice C is incorrect as there is no indication in the scenario provided that links the symptoms to an underlying brain tumor. Choice D is incorrect because the absence of focal neurologic deficits does not make the postictal period worrisome.
4. A nurse caring for a patient with a diagnosis of lung cancer is aware that the primary risk factor for developing lung cancer is:
- A. Alcohol consumption
- B. Smoking
- C. Poor diet
- D. Environmental exposure
Correct answer: B
Rationale: The correct answer is B: Smoking. Smoking is the primary risk factor for developing lung cancer. Tobacco smoke contains numerous carcinogens that can damage the cells in the lungs, leading to the development of cancer. Alcohol consumption (Choice A), poor diet (Choice C), and environmental exposure (Choice D) can contribute to overall health risks, but they are not the primary risk factors specifically associated with the development of lung cancer.
5. A woman has been prescribed Climara, a transdermal estradiol patch. Which of the following should she be instructed by the nurse regarding the administration?
- A. Avoid prolonged sun exposure at the patch site due to increased plasma concentrations.
- B. The application of heat at the patch site will decrease effectiveness and result in pregnancy.
- C. The medication, when exposed to sunlight, can increase the risk of breast cancer.
- D. Exposure of the medication to occasional cold will increase effectiveness with application.
Correct answer: A
Rationale: The correct answer is A. The Climara patch delivers estradiol transdermally, and patients should be instructed to avoid prolonged sun exposure at the patch site due to increased plasma concentrations. Sun exposure can accelerate the absorption of the medication, leading to higher systemic levels than intended. Choices B, C, and D are incorrect because heat at the patch site does not result in pregnancy but may alter absorption rates, there is no direct link between sunlight exposure and breast cancer risk related to this medication, and exposure to cold does not increase effectiveness of the transdermal patch.
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