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階段4 — 產生解決方案。下壁ST段上升型心肌梗塞和右心室受累已獲確認。在準備主要經皮冠狀動脈介入治療（primary PCI）時，護理師現在應執行哪些行動？請選出所有正確的選項。

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1 Continue pulse oximetry; do not start routine oxygen at SpO2 93 percent without respiratory distress, but provide oxygen if saturation falls below 90 percent 持續脈搏血氧監測；在SpO2 93%且無呼吸窘迫時，不開始例行性給氧，但若血氧飽和度降至90%以下則提供氧氣 2 Obtain right-sided leads, maintain IV access and defibrillation readiness, and draw ordered urgent studies without delaying transfer for reperfusion 取得右側導程，維持靜脈通路和電擊去顫準備，並抽取醫囑的緊急檢查，不延遲轉送進行再灌注 3 Give morphine 4 mg IV routinely as first-line treatment and administer nitroglycerin before assessing right ventricular preload dependence or blood pressure 例行性給予嗎啡4毫克靜脈注射作為一線治療，並在評估右心室前負荷依賴性或血壓前給予硝酸甘油 4 Confirm the prehospital aspirin dose and administer the prescribed oral P2Y12 inhibitor after checking allergies, contraindications, and bleeding risk 確認到院前阿斯匹靈劑量，並在檢查過敏史、禁忌症和出血風險後給予醫囑的口服P2Y12抑制劑 5 Administer the prescribed IV unfractionated heparin after completing the focused anticoagulation and bleeding-safety assessment 在完成重點抗凝血和出血安全評估後，給予醫囑的靜脈注射未分段肝素 6 Keep the catheterization team activated, continue rhythm and hemodynamic monitoring, and transfer the client immediately for primary PCI 保持導管團隊啟動，持續心律和血流動力學監測，並立即轉送個案進行主要經皮冠狀動脈介入治療

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