護理師準備為病人塗抹硝酸甘油藥膏。哪項措施是正確的？
A nurse is preparing to administer Nitroglycerin ointment to a client. Which action is appropriate?
- ACover the site with a tight gauze dressing用緊密的紗布敷料覆蓋塗藥部位
- BRub the ointment vigorously into the skin用力將藥膏揉入皮膚
- CPlace the ointment on the same site as the previous dose將藥膏塗抹在與上次劑量相同的部位
- DApply the ointment with a gloved hand✓ 正解戴手套塗抹藥膏
硝酸甘油（Nitroglycerin, NTG）藥膏是一種硝酸鹽類藥物，主要透過釋放一氧化氮（Nitric Oxide）來鬆弛血管平滑肌，達到全身性血管擴張的效果，常用於緩解或預防心絞痛（Angina Pectoris）。由於其藥效是透過皮膚吸收進入血液循環，因此護理師在塗抹時必須採取適當的防護措施。 塗抹 NTG 藥膏的正確方法不僅關乎病人的用藥安全與效果，更直接影響護理師自身的職業安全。NTG 藥膏的劑量通常以英吋（inch）計算，塗抹後不應按摩，以避免藥物吸收過快導致血壓驟降。此外，塗抹部位應輪替，以減少皮膚刺激並確保藥物穩定吸收。護理師必須清楚了解這些給藥原則，以確保治療的有效性及人員安全。
Nitroglycerin (NTG) ointment is a nitrate that releases nitric oxide to relax vascular smooth muscle, producing systemic vasodilation; it is used to relieve or prevent angina pectoris. Because it is absorbed through the skin into the bloodstream, the nurse must take protective measures during application. NTG ointment is dosed in inches and must not be massaged into the skin to avoid rapid absorption and severe hypotension. Application sites should be rotated to reduce skin irritation and maintain consistent absorption. The nurse must wear gloves to avoid absorbing the drug and developing headache or hypotension. Understanding these principles ensures both therapeutic effectiveness and nurse safety.