護理師為病人進行皮下胰島素注射，哪項操作方式是正確的？

皮下注射胰島素（Subcutaneous insulin injection）是糖尿病管理中的常見護理操作。正確的操作技術能確保藥物吸收的穩定性，預防局部併發症，並減少病人的不適。 核心概念是預防注射部位的皮膚和皮下組織產生硬結或萎縮，這會影響胰島素的吸收。因此，輪替注射部位是關鍵。輪替部位不應僅限於單一區域，而應在身體的特定解剖區域內進行系統性的輪替。 正確答案 D，在解剖區域內輪替注射部位（Rotate injection sites within an anatomical region），是標準且正確的操作方式。例如，腹部是常見的注射區域，可以在肚臍周圍（避開 2 英吋範圍）做順時針或逆時針的輪替；大腿外側、上臂後側、臀部外上 Quadrant 也是可輪替的部位。這樣可以讓局部組織有足夠的時間修復，避免因反覆在同一點注射而導致的脂肪增生（Lipohypertrophy）或脂肪萎縮（Lipoatrophy），進而確保胰島素吸收的穩定性。 錯誤選項分析： A. 注射後用力按摩注射部位：按摩會加速胰島素的吸收，可能導致血糖在注射後短時間內急速下降，引發低血糖，尤其對於作用時間較長的胰島素，這種做法是不被鼓勵的。一般建議輕柔按壓止血即可。 C. 對所有病人一律以 90 度角注射：注射針頭的角度取決於病人的皮下脂肪厚度。對於皮下脂肪較薄的病人，可能需要使用 45 度角注射；對於皮下脂肪較厚的病人，才建議使用 90 度角。標準做法是捏起皮膚，然後根據情況選擇角度。 A. 使用相同的注射點以維持吸收率：這是錯誤的。反覆在同一注射點注射會導致脂肪增生，使胰島素吸收變得不規律且不可預測，影響血糖控制。輪替注射部位是為了確保穩定且可預測的吸收。 護理師在執行胰島素注射時，應教導病人正確的輪替原則，並根據病人的身體狀況（如皮下脂肪厚度）調整注射技巧，以達到最佳的血糖管理效果。

Subcutaneous insulin injection is a common nursing procedure in diabetes management. Proper injection technique ensures consistent drug absorption, prevents local complications, and minimizes patient discomfort. The core concept is preventing induration or atrophy of the skin and subcutaneous tissue at the injection site, both of which can affect insulin absorption. Therefore, site rotation is essential. Rotation should not be limited to a single area but should be performed systematically within a defined anatomical region. The correct answer D—rotating injection sites within an anatomical region—is the standard and proper technique. For example, the abdomen is a common injection area, and sites can be rotated clockwise or counterclockwise around the umbilicus (avoiding a 2-inch radius). The outer thighs, posterior upper arms, and upper outer quadrants of the buttocks are also acceptable rotation sites. This allows local tissue sufficient time to recover and prevents lipohypertrophy or lipoatrophy that may result from repeatedly injecting in the same spot, ensuring stable insulin absorption. Analysis of incorrect options: A. Vigorously massaging the site after injection: Massaging accelerates insulin absorption and may cause rapid drops in blood glucose, leading to hypoglycemia—especially with longer-acting insulin. Light pressure for hemostasis is generally recommended. C. Always inject at a 90-degree angle for all clients: The needle angle depends on the patient's subcutaneous tissue thickness. For patients with less subcutaneous fat, a 45-degree angle may be required, while a 90-degree angle is recommended for those with thicker subcutaneous tissue. Standard practice involves pinching the skin and selecting the angle accordingly. D. Using the same injection spot to maintain absorption rates: This is incorrect. Repeated injection at the same site causes lipohypertrophy, resulting in unpredictable insulin absorption and impaired glycemic control. Site rotation is what ensures stable and predictable absorption. When administering insulin, the nurse should teach patients the correct rotation principles and adjust injection technique to the patient's body composition (such as subcutaneous fat thickness) to optimize glycemic management.