護理師準備使用 Z 軌跡技術（Z-track technique）進行肌肉注射時，應採取哪項行動？
Which action should the nurse take when preparing to administer an intramuscular injection using the Z-track technique?
- APull the skin and subcutaneous tissue sideways before inserting the needle✓ 正解插入針頭前將皮膚和皮下組織向側邊拉開
- BUse a 25-gauge, 5/8-inch needle使用 25 號、5/8 吋的針頭
- CAdminister the injection into the deltoid muscle將注射注入三角肌
- DMassage the site vigorously after removing the needle拔針後用力按摩注射部位
Z 軌跡技術旨在防止藥物（特別是具刺激性或染色性的藥物，如鐵劑）滲漏到皮下組織。操作方法是將皮膚和皮下組織向一側拉開 1-1.5 英寸，垂直進針，注藥後停留 10 秒，拔針後放開皮膚。放開後組織會覆蓋針刺路徑，形成密封。嚴禁按摩注射部位，否則會將藥物推入皮下。
The Z-track technique is designed to prevent leakage of medication (especially irritating or staining drugs such as iron preparations) into the subcutaneous tissue. The skin and subcutaneous tissue are pulled laterally 1 to 1.5 inches, the needle is inserted perpendicularly, the medication is injected, the needle is held in place for 10 seconds, and the skin is then released after withdrawal. After release, the tissues cover the needle track and seal the medication within the muscle. Massaging the injection site is strictly contraindicated, as it would push the medication into the subcutaneous tissue.
美國 NCLEX 強調臀中肌（Ventrogluteal）為首選；台灣臨床仍有部分習慣使用臀大肌（Dorsogluteal）。