護理師正在進行皮下注射依諾肝素(Enoxaparin)。下列何種技術是正確的?
A nurse is administering a dose of subcutaneous enoxaparin. Which technique is correct?
- AMassage the site vigorously after injection注射後用力按摩注射部位
- BAdminister the injection into the deltoid muscle將注射劑打入三角肌
- CAspirate prior to injection to ensure blood vessel avoidance注射前進行抽吸以確保避開血管
- DMaintain the air bubble in the prefilled syringe✓ 正解保留預充式注射器內的氣泡
皮下注射依諾肝素(Enoxaparin),一種低分子量肝素(Low Molecular Weight Heparin, LMWH),常用於預防或治療血栓栓塞性疾病。其給藥技術有特殊要求,以確保藥效並減少併發症。Enoxaparin 通常以預充式注射器(prefilled syringe)提供,其中含有一個氣泡。這個氣泡的設計目的是在注射藥物後,將針頭中的殘留藥液推入皮下組織,並封閉針頭,避免藥液回滲刺激皮膚或皮下組織,減少疼痛與瘀青。因此,注射時不應將氣泡排出,而是保留在注射器內。抽吸(Aspirate)步驟在皮下注射 Enoxaparin 時是禁止的,因為可能增加皮下出血或血腫的風險。同樣地,注射後也不應按摩注射部位,因為這可能加速藥物吸收,增加出血風險,或導致藥物擴散至不期望的區域。Enoxaparin 應注射於皮下脂肪層,常見部位包括腹部兩側(肚臍旁 2 英吋處)或上臂外側,而非三角肌(deltoid muscle),後者通常用於肌肉注射。
Subcutaneous injection of enoxaparin, a low molecular weight heparin (LMWH), is commonly used for prevention or treatment of thromboembolic disease. Its administration technique has specific requirements to ensure efficacy and reduce complications. Enoxaparin is typically supplied in a prefilled syringe containing an air bubble. This bubble is designed to push the residual medication out of the needle into the subcutaneous tissue after injection and seal the needle tract, preventing leakage that could irritate the skin or subcutaneous tissue and reducing pain and bruising. Therefore, the air bubble should not be expelled during injection but retained in the syringe. Aspiration is contraindicated when injecting enoxaparin subcutaneously, as it can increase the risk of subcutaneous bleeding or hematoma. Similarly, the injection site should not be massaged after administration, because this can accelerate drug absorption, increase bleeding risk, or spread the drug to unintended areas. Enoxaparin should be injected into the subcutaneous fat layer, commonly in the abdomen (about 2 inches lateral to the umbilicus) or the lateral aspect of the upper arm — not the deltoid muscle, which is used for intramuscular injection.
依諾肝素(Enoxaparin)的給藥技術在美國與台灣的臨床實務中是標準化的,都強調保留預充式注射器中的氣泡,且注射後不按摩。美國在 RN 的培訓中,對於 LMWH 的注射技術會有非常詳細的指導,並且 RN 在執行時有較大的自主權。台灣的護理師也同樣接受相關訓練,但可能在操作細節的強調程度或執行自主性上略有差異。例如,美國的護理師可能被鼓勵在每次注射前主動檢查藥物外觀、確認病人身分與部位,並記錄注射細節,而台灣的護理師則可能更依賴團隊合作與標準化流程卡。