The nurse is assessing the level of sedation for a patient who is intubated and receiving mechanical ventilation. The nurse observes that the patient's RASS (see RASS tool below or in the attachment) is +2. What is the nurse's best action?

A. Increased urine output: COPD primarily affects the respiratory system and gas exchange, not renal function directly. Increased urine output is not a typical symptom of COPD and may indicate other conditions such as diuretic therapy or kidney disease.

B. Sudden onset of shortness of breath: Dyspnea is a hallmark symptom of COPD due to airway obstruction, air trapping, and reduced oxygenation. Acute worsening may indicate an exacerbation or complication such as a pneumothorax or infection.

C. Chest pain that worsens with deep breathing: Pleuritic chest pain can occur in COPD patients, particularly if they develop complications such as pneumothorax, pulmonary embolism, or severe coughing episodes. Pain is often exacerbated by deep inspiration.

D. Muscle weakness: Chronic hypoxia and hypercapnia, along with decreased activity tolerance, can lead to fatigue and generalized muscle weakness in COPD patients. This is common in advanced disease and during exacerbations.

E. Hypotension: COPD itself does not typically cause hypotension. Hypotension may appear only in cases of severe hypoxemia, right-sided heart failure, or shock, which are not standard symptoms.

F. Decreased heart rate: COPD is more commonly associated with tachycardia due to hypoxia and increased work of breathing. Bradycardia is not a typical feature unless there are other cardiac complications.

G. Coughing up blood: Hemoptysis can occur in COPD due to chronic bronchitis, infection, or ruptured bronchial vessels. While not always present, it is a recognized symptom in exacerbations or complications.

A. Adenosine 6 mg IV: The provided rhythm strip shows clear ST-segment elevation. Adenosine is used to treat paroxysmal supraventricular tachycardia (PSVT) by temporarily blocking AV node conduction. It is not indicated for acute ST-elevation myocardial infarction (STEMI) and would not address the patient’s ischemic chest pain.

B. Nitroglycerin 0.4 mg sublingual: Sublingual nitroglycerin is the priority medication for immediate relief of ischemic chest pain in acute coronary syndrome, including STEMI. It dilates coronary arteries, improves myocardial oxygen supply, and reduces preload and myocardial oxygen demand, which directly targets the patient’s presenting symptoms.

C. Metoprolol 5 mg IV: Metoprolol, a beta-blocker, can reduce heart rate, myocardial oxygen demand, and blood pressure in acute coronary syndrome. While important in STEMI management, it is not the first-line priority for immediate pain relief; pain and myocardial perfusion take precedence.

D. Ondansetron 4 mg sublingual: Ondansetron is an antiemetic used to relieve nausea. While helpful for patient comfort, it does not address myocardial ischemia or reduce cardiac workload, and is therefore not a priority in the acute management of STEMI.