1. A 54-year-old male with a history of chronic obstructive pulmonary disease (COPD) presents with acute shortness of breath. Which of the following interventions should be prioritized? A. Administration of high-flow oxygen B. Initiation of chest physiotherapy C. Prescription of oral corticosteroids D. Performance of endotracheal intubation Answer: A. Administration of high-flow oxygen Rationale: Patients with COPD exacerbations benefit from controlled oxygen therapy to prevent hypoxemia and minimize the risk of hypercapnic respiratory failure. 2. A patient is admitted with suspected acute pancreatitis. Which laboratory test is most indicative of this condition? A. Serum amylase B. Serum lipase C. Liver function tests D. Complete blood count Answer: B. Serum lipase Rationale: Serum lipase is more specific to the pancreas and remains elevated longer than amylase, making it a more indicative marker for acute pancreatitis. 3. A 63-year-old female presents with left-sided chest pain and dyspnea. An ECG shows ST-segment elevation in leads V2-V4. What is the most likely diagnosis? A. Right ventricular infarction B. Anterior wall myocardial infarction C. Inferior wall myocardial infarction D. Pericarditis Answer: B. Anterior wall myocardial infarction Rationale: ST-segment elevation in leads V2-V4 is indicative of an anterior wall myocardial infarction, which is typically associated with occlusion of the left anterior descending artery. 4. A patient with acute renal failure is undergoing treatment. Which parameter is essential for monitoring the effectiveness of the treatment? A. Urine output