Correct Answer: B

Rationale: When one has Cushing's disease, the focal structure affected is the pituitary gland. Cushing's disease is caused by the overproduction of adrenocorticotropic hormone (ACTH) by the pituitary gland. This excess ACTH stimulates the adrenal glands to produce too much cortisol, leading to the symptoms associated with Cushing's disease. Therefore, the primary issue originates in the pituitary gland, not the other structures mentioned in the question.

Correct Answer: B

Rationale: Refeeding syndrome is a potentially dangerous condition that can occur in malnourished individuals when nutrition is reintroduced too quickly. It is characterized by shifts in electrolytes, fluid imbalance, and metabolic abnormalities. Monitoring for decreased bowel sounds, nausea, bloating, and abdominal distention is the priority action to prevent complications associated with refeeding syndrome. These symptoms can indicate gastrointestinal issues such as ileus or overfeeding, which can lead to further complications. Early recognition and intervention can help prevent serious consequences of refeeding syndrome.

Correct Answer: B

Rationale: In this scenario, the patient is presenting with acute exacerbation of chronic heart failure (CHF) complicated by pulmonary edema and respiratory distress. The priority intervention for managing this exacerbation is to initiate positive pressure ventilation for respiratory support. Positive pressure ventilation, such as non-invasive positive pressure ventilation (NIPPV) or invasive mechanical ventilation, can help improve oxygenation and decrease the work of breathing for the patient. By providing adequate respiratory support, ventilation can reduce the negative effects of pulmonary edema and respiratory distress due to CHF exacerbation. Administering intravenous loop diuretics (Choice A) might be necessary to address fluid overload, but it is not the initial priority as ensuring adequate ventilation is crucial. Emergent pericardiocentesis (Choice C) is not indicated in this scenario as there is no mention of cardiac tamponade. Inotropic medications (Choice D) may be considered in managing acute exacerbation of CHF but

Correct Answer: A

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Correct Answer: D

Rationale: Administering oxygen therapy is the priority nursing intervention for managing a patient with COPD experiencing respiratory distress. In COPD, the patient's lungs are less efficient at oxygen exchange, leading to hypoxemia. Oxygen therapy helps improve oxygenation in the body and alleviates respiratory distress in these patients. Positioning the patient in high Fowler's position can also help improve lung expansion, but providing supplemental oxygen takes precedence in addressing the underlying hypoxemia. Administering bronchodilators and performing chest physiotherapy aim to manage airway obstruction and promote airway clearance, but ensuring the patient has adequate oxygenation is crucial in the immediate management of respiratory distress in COPD.