foundations of nursing test bank

Correct Answer: A

Rationale: The correct answer is A: Diabetes. Erectile dysfunction can be caused by organic factors, such as diabetes, which affects blood flow and nerve function. Diabetes can lead to damage of blood vessels and nerves, impacting the ability to achieve and maintain an erection. Testosterone deficiency (choice B) can also contribute to erectile dysfunction, but it is not an organic cause. Anxiety (choice C) and depression (choice D) are psychological factors that can lead to erectile dysfunction, not organic causes. Parkinsonism (choice E) can affect sexual function, but it is not a common organic cause of erectile dysfunction.

Correct Answer: D

Rationale: The correct answer is D because the patient's symptoms of pounding headache, visual changes, and epigastric pain are classic signs of worsening preeclampsia, indicating a significant increase in blood pressure and potential progression to eclampsia (seizures). Immediate medical intervention is crucial to prevent complications. A: Gastrointestinal upset does not explain the combination of symptoms presented. B: Magnesium sulfate is used to prevent seizures in preeclampsia but does not cause these specific symptoms. C: Anxiety does not typically present with the specific physical symptoms mentioned.

Correct Answer: C

Rationale: Rationale for Correct Answer (C - Taper infusion gradually): 1. Tapering the infusion gradually allows for a smooth transition off PN without causing metabolic disturbances. 2. Abruptly stopping PN can lead to hypoglycemia and electrolyte imbalances. 3. Increasing the rate may cause fluid overload or hyperglycemia. 4. Hanging 5% dextrose alone does not provide adequate nutrition and may not meet the patient's needs.

Correct Answer: B

Rationale: The correct answer is B because in Goodpasture syndrome, the patient's immune system mistakenly targets normal constituents of the body, specifically the basement membrane of the kidneys and lungs. This autoimmune response leads to inflammation and damage in these organs, resulting in respiratory and renal dysfunction. Choice A is incorrect as immune complexes are not the primary mechanism in Goodpasture syndrome. Choice C is incorrect as it refers to T cell-mediated immune responses, which are not the main drivers in this condition. Choice D is incorrect as histamine release and cell lysis are not the main processes involved in Goodpasture syndrome.

Correct Answer: C

Rationale: The correct answer is C because it accurately explains the physiological change in the eye that leads to the need for bifocals. As individuals age, there is a gradual thickening of the lens of the eye, which affects the eye's ability to accommodate for near vision. This thickening makes it harder for the eye to focus on close objects, necessitating the use of bifocals to correct this near vision issue. Choices A, B, and D are incorrect because they do not provide a scientifically accurate explanation for the need for bifocals in older individuals. Option A is dismissive and does not address the specific change in the eye that leads to the need for bifocals. Option B implies aging as a general concept without specifying the relevant change in the eye. Option D incorrectly states that the eye gets shorter as we age, which is not the reason for needing bifocals.