為無意識病人進行口腔清潔的主要目的是什麼？

為無意識（Unconscious）病人進行口腔清潔（Oral hygiene），又稱為口腔照護，不僅是維持病人舒適度的日常護理，更是一項重要的預防性醫療措施。無意識病人的生理機能，特別是吞嚥和咳嗽反射，通常會受到抑制或喪失，這使得他們極易發生吸入性肺炎（Aspiration pneumonia）。 口腔清潔的主要目的，是清除口腔內的食物殘渣、細菌和分泌物，降低口腔的病原菌負荷。當這些細菌或分泌物一旦被吸入肺部，就可能引發嚴重的肺部感染。因此，透過定期的口腔清潔，可以顯著降低吸入性肺炎的發生率，保護病人的呼吸道健康。這是護理上優先關注的病人安全議題。 選項 B 是正確的。預防吸入性肺炎是為無意識病人進行口腔清潔的首要目的。透過維持口腔清潔，減少細菌進入肺部的機會。 選項 D 是錯誤的。雖然口腔清潔有助於保持牙齒清潔，但「保持牙齒潔白」並非其主要臨床目的，特別是在無意識病人身上。 選項 A 是錯誤的。為無意識病人進行口腔清潔與刺激食慾（Stimulate appetite）沒有直接關聯。病人無法透過口腔進食，因此此項措施與食慾無關。 選項 C 是錯誤的。雖然口腔清潔確實能改善口氣，但這只是附帶的益處，而非最主要的臨床目的。預防感染的風險遠大於改善口氣的重要性。 臨床思路：在照護失去自主意識的病人時，護理師必須預想病人可能面臨的各種風險，並採取預防措施。對於無意識病人，呼吸道保護是重中之重，而口腔清潔在預防吸入性肺炎方面扮演著關鍵角色。

Oral hygiene for an unconscious client, also known as oral care, is not merely a routine measure for comfort but an important preventive medical intervention. The physiologic functions of unconscious clients, particularly the swallowing and cough reflexes, are usually suppressed or absent, leaving them highly susceptible to aspiration pneumonia. The primary purpose of oral hygiene is to remove food residue, bacteria, and secretions from the oral cavity and reduce the pathogen burden. Once such bacteria or secretions are aspirated into the lungs, they may cause severe pulmonary infection. Therefore, regular oral hygiene significantly reduces the incidence of aspiration pneumonia and protects the respiratory health of the client. This is a top patient-safety concern in nursing. Option B is correct. Preventing aspiration pneumonia is the primary purpose of oral hygiene in unconscious clients, achieved by maintaining oral cleanliness and reducing bacteria entering the lungs. Option D is incorrect. Although oral hygiene helps keep the teeth clean, 'keeping teeth white' is not the primary clinical purpose, particularly in unconscious clients. Option A is incorrect. Oral hygiene in unconscious clients has no direct link to stimulating appetite, because such clients cannot eat orally, making this measure unrelated to appetite. Option C is incorrect. Although oral hygiene does improve breath odor, this is only a side benefit, not the primary clinical purpose. Preventing infection far outweighs improving breath odor. Clinical reasoning: When caring for clients who have lost consciousness, the nurse must anticipate the various risks the client may face and take preventive measures. For unconscious clients, airway protection is paramount, and oral hygiene plays a key role in preventing aspiration pneumonia.