Correct Answer: B

Rationale: The correct answer is B because pregnant patients with Class II heart disease should avoid strenuous activity to prevent further strain on the heart. Strenuous activity can increase the risk of complications in these patients. Option A is incorrect as excessive weight gain can exacerbate heart disease. Option C is incorrect because limiting fluid intake can lead to dehydration, which is harmful during pregnancy. Option D is incorrect as a diet high in calcium is not specifically indicated for pregnant patients with Class II heart disease.

Correct Answer: C

Rationale: The correct answer is C: Encourage the patient to keep his or her feeding area clean. This is the most appropriate independent nursing action as it promotes hygiene and reduces the risk of infection. Keeping the feeding area clean is essential in preventing complications in a patient with malnutrition. Rationales for why the other choices are incorrect: A: Firmly redirect the patient's head when feeding - This is incorrect because forceful redirection can cause distress and discomfort to the patient, potentially leading to aspiration or choking. B: Administer phenothiazines after each meal as ordered - This is incorrect as phenothiazines are not typically used for malnutrition treatment and should not be administered without a specific indication. D: Apply deep, gentle pressure around the patient's mouth to aid swallowing - This is incorrect because applying pressure around the mouth can pose a choking hazard and should not be done without proper assessment and intervention by a speech therapist or swallowing specialist.

Correct Answer: D

Rationale: The correct answer is D: Immunoglobulin E. The atopic response in allergies is mainly mediated by IgE antibodies. IgE binds to allergens and triggers the release of histamine and other chemicals that cause allergic symptoms. IgA is mainly found in mucosal areas, IgM is involved in early immune responses, and IgG is important for long-term immunity. IgE is specifically associated with allergic reactions due to its role in sensitizing mast cells and basophils to allergens.

Correct Answer: D

Rationale: The correct answer is D: At a memorial service. This is a safe venue for the nurse to express her feelings of frustration and grief about a patient who has recently died because a memorial service is specifically designed to honor and remember the deceased. It provides a supportive and understanding environment where emotions can be shared openly without judgment. The nurse can find comfort in sharing her feelings with others who have also been impacted by the patient's passing. Incorrect choices: A: In the cafeteria - Not an appropriate setting for expressing personal emotions related to death and dying. B: At a staff meeting - Might not be the most suitable place as the focus is on work-related matters. C: At a social gathering - Not specifically designed for processing grief and may not provide the necessary support and understanding.

Correct Answer: B

Rationale: The correct answer is B because pregnant patients with Class II heart disease should avoid strenuous activity to prevent further strain on the heart. Strenuous activity can increase the risk of complications in these patients. Option A is incorrect as excessive weight gain can exacerbate heart disease. Option C is incorrect because limiting fluid intake can lead to dehydration, which is harmful during pregnancy. Option D is incorrect as a diet high in calcium is not specifically indicated for pregnant patients with Class II heart disease.