which of the following is a characteristic of disseminated intravascular coagulation dic
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ATI RN

ATI Pathophysiology Exam 3

1. Which of the following is a characteristic of disseminated intravascular coagulation (DIC)?

Correct answer: B

Rationale: Disseminated intravascular coagulation (DIC) is characterized by simultaneous clotting and bleeding throughout the body. This imbalance in the body's clotting system leads to the formation of blood clots in small blood vessels, which can consume clotting factors and platelets, ultimately leading to excessive bleeding. Choices A, C, and D are incorrect because they do not describe the characteristic feature of DIC, which involves both clotting and bleeding.

2. In osteoporosis, what is the expected therapeutic action of raloxifene (Evista)?

Correct answer: A

Rationale: The correct answer is A. Raloxifene works by decreasing bone resorption and increasing bone density. This helps in strengthening bones, reducing the risk of fractures, and improving bone health in patients with osteoporosis. Choice B is incorrect because raloxifene does not directly stimulate the formation of new bone but rather prevents bone loss. Choice C is incorrect as raloxifene does not primarily affect calcium absorption in the intestines. Choice D is also incorrect as raloxifene does not primarily decrease the excretion of calcium through the kidneys.

3. A patient is prescribed sildenafil (Viagra) for erectile dysfunction. What key contraindication should the nurse review with the patient?

Correct answer: A

Rationale: The correct answer is A: Use of nitrates. Sildenafil (Viagra) is contraindicated in patients taking nitrates due to the risk of severe hypotension. Nitrates and sildenafil both cause vasodilation, so their combined use can lead to a dangerous drop in blood pressure. Choices B, C, and D are incorrect because while a history of hypertension or use of antihypertensive medications may influence treatment decisions, they are not the key contraindication specifically related to sildenafil use.

4. In menopausal women, what is the primary goal of estrogen therapy?

Correct answer: B

Rationale: The primary goal of estrogen therapy in menopausal women is to prevent osteoporosis by maintaining bone density. Estrogen helps in preserving bone mass and reducing the risk of fractures. While estrogen therapy may alleviate some menopausal symptoms, such as hot flashes, its primary focus is on bone health rather than symptom management. Increasing calcium absorption and maintaining bone strength are outcomes of preventing osteoporosis rather than the primary goal of estrogen therapy.

5. A patient taking an oral contraceptive missed one pill. What should the nurse teach the patient to do?

Correct answer: A

Rationale: When a patient taking an oral contraceptive misses one pill, the correct action is to take two pills as soon as they remember and then continue the regular schedule. Option A is the correct answer because doubling up the dose helps maintain the effectiveness of the contraceptive. Option B is incorrect because taking only one pill after missing one may decrease contraceptive effectiveness. Option C is wrong as skipping the missed pill can also reduce effectiveness. Option D is inaccurate because taking two pills immediately is not necessary; the patient should take the missed pill as soon as remembered and then resume the regular dosing schedule.

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