[{"data":1,"prerenderedAt":65},["ShallowReactive",2],{"q-nurse-109-2-basic-medicine-030":3},{"subject":4,"subjectSlug":5,"subjectFullName":6,"question":7,"related":37,"lastmod":64},"基礎醫學","basic-medicine","基礎醫學(包括解剖學、生理學、病理學、藥理學、微生物學與免疫學)",{"id":8,"webId":9,"year":10,"session":11,"subject":4,"number":12,"stem":13,"options":14,"answer":19,"answerNote":20,"images":21,"explanation":22,"explanationDeep":23,"topics":24,"freq":27},"nurse-109-2-基礎醫學-030","nurse-109-2-basic-medicine-030",109,2,30,"若以潮氣容積（tidal volume）200毫升，呼吸頻率40次／分鐘的方式持續呼吸30秒，會發生下列何種現象？",{"A":15,"B":16,"C":17,"D":18},"動脈二氧化碳分壓明顯下降","容易產生呼吸性低氧現象","血液中的氧氣總量大幅增加","呈現呼吸性鹼中毒","B",null,[],"本題考點是淺快呼吸下死腔對有效肺泡通氣的影響。依呼吸生理,解剖死腔約150毫升,每次呼吸只有超過死腔的部分才是有效肺泡通氣。潮氣容積200毫升時,有效肺泡通氣僅(200-150)=50毫升,乘以頻率40次得肺泡通氣量僅2公升\u002F分,遠低於正常,導致氣體交換不足、動脈氧分壓下降,故B「容易產生呼吸性低氧」正確。A動脈二氧化碳應因通氣不足而上升(蓄積),非明顯下降。C肺泡通氣不足下,血中氧氣總量不會大幅增加,反而不足。D通氣不足致二氧化碳滯留,傾向呼吸性酸中毒而非鹼中毒。故淺快呼吸雖分鐘通氣量看似正常,實則死腔佔比過高造成低氧,選B。","關鍵在區分「分鐘通氣量」與「肺泡通氣量」:分鐘通氣=潮氣容積×頻率(此例8L看似足夠),但肺泡通氣=(潮氣容積−死腔)×頻率(此例僅2L)。淺快呼吸(低潮氣、高頻率)使死腔通氣佔比暴增,是無效呼吸。臨床上鼓勵術後或疼痛病人深呼吸,即為提高每次有效肺泡通氣、避免低血氧與肺塌陷。反之慢深呼吸效率最佳。記憶:「淺快像喘不到氣,深慢才真換氣」。二氧化碳滯留伴呼吸性酸中毒,與D相反。",[25,28,30,33,35],{"term":26,"count":27},"肺泡通氣量",3,{"term":29,"count":11},"解剖死腔",{"term":31,"count":32},"分鐘通氣量",1,{"term":34,"count":32},"淺快呼吸",{"term":36,"count":32},"低血氧",[38,42,47,51,56,60],{"webId":39,"stem":40,"number":41,"year":10,"session":11},"nurse-109-2-basic-medicine-031","下列何者為刺激胃泌素（gastrin）分泌之直接且重要的因子？",31,{"webId":43,"stem":44,"number":45,"year":46,"session":32},"nurse-110-1-basic-medicine-047","陰莖鱗狀細胞瘤及前驅病變，與下列何種病毒最有關？",47,110,{"webId":48,"stem":49,"number":50,"year":46,"session":11},"nurse-110-2-basic-medicine-061","下列何種藥物可預防或減輕因使用 Aspirin 造成之消化性潰瘍？",61,{"webId":52,"stem":53,"number":54,"year":55,"session":32},"nurse-112-1-basic-medicine-049","下列對於變性普利昂蛋白（prion）之敘述，何者錯誤？",49,112,{"webId":57,"stem":58,"number":27,"year":59,"session":27},"nurse-113-3-basic-medicine-003","支配聲帶肌群的神經是：",113,{"webId":61,"stem":62,"number":45,"year":63,"session":27},"nurse-114-3-basic-medicine-047","主要經由人類身上的體蝨叮咬而傳播的細菌為何？",114,"2026-09-04",1788510715008]