Correct Answer: A

Rationale: The correct answer is Hypokalemia. Diuretics, such as furosemide, commonly cause potassium loss in patients, leading to hypokalemia. This electrolyte imbalance should be closely monitored to prevent complications like cardiac arrhythmias. Hypercalcemia (Choice B) is not typically associated with diuretic use. Hyponatremia (Choice C) involves low sodium levels and can occur in conditions like syndrome of inappropriate antidiuretic hormone secretion (SIADH) but is not directly caused by diuretics. Hypermagnesemia (Choice D) is an excess of magnesium, usually not a common electrolyte imbalance induced by diuretics.

Correct Answer: B

Rationale: The correct answer is B. Weighing oneself daily is crucial in monitoring fluid retention, a key aspect in managing heart failure. This helps in detecting early signs of fluid buildup, prompting timely interventions. Choice A is incorrect as the recommended sodium intake for heart failure clients is usually lower, around 2-3 grams daily. Choice C is incorrect because excessive water intake can worsen fluid retention in heart failure. Choice D is incorrect as clients with heart failure should consult healthcare providers before significantly altering their physical activity levels.

Correct Answer: A

Rationale: The correct answer is to administer epinephrine as the first intervention for a patient experiencing anaphylactic shock. Epinephrine is crucial in reversing the allergic reaction and restoring cardiovascular stability. Corticosteroids (Choice B) are not the first-line treatment for anaphylactic shock but may be used as an adjunct therapy. Antihistamines (Choice C) can help relieve itching and hives but are not as effective as epinephrine in treating the systemic effects of anaphylaxis. Oxygen (Choice D) may be necessary to support breathing in severe cases of anaphylaxis, but administering epinephrine takes precedence in the management of anaphylactic shock.

Correct Answer: C

Rationale: During radiation therapy for breast cancer, one common side effect is skin irritation due to the impact of radiation on the skin cells. This side effect should be closely monitored by the nurse. Fatigue may also occur as a side effect of radiation therapy, but skin irritation is more specific to the treatment area and is a priority in this case. Nausea and weight gain are not typically associated with radiation therapy for breast cancer, making them incorrect choices.

Correct Answer: A

Rationale: Corrected Question: To assess fluid balance in a patient receiving diuretics, monitoring daily weight is the most accurate method. This is because diuretics primarily affect fluid levels in the body, leading to changes in weight due to fluid loss. While monitoring intake and output, checking for edema, and monitoring blood pressure are important aspects of patient care, they do not provide as direct and accurate information about fluid balance as daily weight monitoring specifically in patients on diuretics.