A nurse is admitting a client who reports tightness in their chest that radiates to left arm. Complete the following sentence by using the lists of options. The nurse should first address the client's dropdown followed by the client's dropdown.

The focus on this patient is on prioritizing care for a client experiencing an acute ST-elevation myocardial infarction (STEMI). The client presents with classic manifestations of myocardial ischemia including chest pain radiating to the left arm, diaphoresis, nausea, dyspnea, elevated cardiac enzymes, and ECG changes showing ST-segment elevation. Priority nursing actions follow the ABCs with oxygenation addressed first when compromised. After stabilization of oxygen delivery, immediate attention must shift to cardiac perfusion and rhythm abnormalities shown on the ECG to prevent further myocardial damage. Rationale for correct choices: • Oxygen saturation: The oxygen saturation of 93% on room air indicates decreased oxygenation in a client actively experiencing myocardial ischemia. The heart muscle is already deprived of oxygen due to impaired coronary blood flow, and hypoxemia further worsens tissue damage. Supplemental oxygen helps reduce ischemic injury and supports vital organ function. • ECG results: After oxygenation is addressed, ECG findings require immediate attention because ST-segment elevation indicates active myocardial infarction requiring urgent reperfusion therapy. Tachycardia and irregular rhythm also suggest electrical instability and increased risk for life-threatening dysrhythmias. ECG changes guide emergency interventions such as cardiac catheterization or thrombolytic therapy. Rapid response is necessary to preserve myocardial tissue and reduce mortality. Rationale for incorrect choices: • Pain level: Chest pain is an important symptom of myocardial infarction and should be treated promptly, but it is addressed after ensuring adequate oxygenation and circulation. Pain reflects ischemia, but untreated hypoxemia poses a more immediate threat to tissue survival. Managing oxygen saturation and ECG abnormalities directly targets the cause of the pain. • Nausea: Nausea is a common accompanying symptom of myocardial infarction due to vagal stimulation and stress response. Although uncomfortable, it does not pose the same immediate threat as impaired oxygenation or active myocardial injury. Treating nausea does not improve cardiac perfusion or oxygen delivery. Therefore, it is not the first priorities. • Cholesterol level: Elevated cholesterol contributes to long-term cardiovascular risk and likely played a role in the development of coronary artery disease. However, it does not require immediate intervention during an acute STEMI event. Acute management focuses on restoring oxygenation and coronary blood flow rather than correcting chronic lipid abnormalities. • Blood glucose: The blood glucose level of 103 mg/dL is within normal range and does not indicate an acute problem requiring intervention. Although the client has type 2 diabetes, glucose is currently stable and unrelated to the immediate cardiac emergency. Priority must remain on life-threatening issues such as hypoxemia and myocardial infarction.