Correct Answer: C

Rationale: The correct answer is C: Urinary output every hour. This is because assessing urinary output is crucial for monitoring fluid balance in burn patients. Adequate urine output indicates proper fluid replacement, while decreased output may indicate dehydration. Recording weights daily (choice A) may be important but not as immediate and specific as urinary output. Blood pressure every 15 minutes (choice B) is too frequent and not directly related to fluid replacement in this context. Monitoring peripheral edema every 4 hours (choice D) is not as reliable as urinary output for assessing fluid status.

Correct Answer: D

Rationale: The correct answer is D because a regular diet with extra fruits and green vegetables can provide essential nutrients for overall health, potassium-sparing diuretics can help manage potassium levels in the body, and discontinuing oral magnesium salts can prevent further complications in the patient. Option A focuses on promoting a healthy diet, B addresses specific medication for potassium management, and C avoids potential interactions with magnesium salts. Therefore, all of the measures (A, B, and C) are necessary for comprehensive management of the patient's condition.

Correct Answer: B

Rationale: The correct answer is B: Ask her to demonstrate her ability to ambulate. This response is best because it allows the nurse to assess the patient's actual ability to walk safely to the bathroom. By observing her, the nurse can ensure her safety and prevent potential falls. This approach also respects the patient's autonomy while prioritizing her safety. Incorrect responses: A: Allowing her to ambulate unassisted solely for positive self-esteem overlooks the importance of assessing her actual capability and ensuring safety. C: Explaining that assistance will always be available may not address the immediate need for assessment and safety. D: Asking another staff member to assist without assessing the patient's ability herself does not allow the nurse to directly evaluate the patient's safety and independence.

Correct Answer: B

Rationale: The correct answer is B: Block beta stimulation in the heart. Propranolol is a beta-blocker that works by blocking beta-1 and beta-2 receptors in the heart. By doing so, it reduces the heart rate, decreases the force of contraction, and lowers blood pressure, which helps in managing angina. Option A is incorrect because propranolol does not act as a vasoconstrictor. Option C is incorrect because propranolol does not act as a vasodilator. Option D is incorrect because propranolol decreases the heart rate rather than increasing it.

Correct Answer: B

Rationale: The correct answer is B: IgE. IgE is specific to allergic responses as it binds to mast cells and basophils, triggering the release of histamine and other inflammatory mediators. IgA is more involved in mucosal immunity, IgG is involved in long-term immunity and opsonization, and IgM is the primary antibody in the primary immune response. IgB is not a known immunoglobulin. Therefore, IgE is the specific immunoglobulin associated with allergic responses due to its role in mediating hypersensitivity reactions.