[{"data":1,"prerenderedAt":65},["ShallowReactive",2],{"q-nurse-106-1-basic-medicine-055":3},{"subject":4,"subjectSlug":5,"subjectFullName":6,"question":7,"related":34,"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-106-1-基礎醫學-055","nurse-106-1-basic-medicine-055",106,1,55,"下列何者屬於 thromboxane A 2 的藥理作用？",{"A":15,"B":16,"C":17,"D":18},"抑制血小板聚集","促進支氣管舒張","抑制子宮平滑肌收縮","促進血管收縮","D",null,[],"本題考點為血栓素 A2(thromboxane A2)的藥理作用。依類花生酸(eicosanoid)代謝途徑,thromboxane A2 由血小板經環氧化酶(COX)途徑合成,主要促進血管收縮並促進血小板聚集,以利止血,故正解為 D。選項 A 稱抑制血小板聚集,與 TXA2 促進聚集的作用恰好相反,錯。TXA2 傾向使支氣管平滑肌收縮而非舒張,B 錯。TXA2 與同族的 prostaglandin 多促進平滑肌收縮,並非抑制子宮平滑肌,C 錯。","對比記憶:血栓素 A2(血小板)=血管收縮+促聚集;前列環素 PGI2(血管內皮)=血管舒張+抑聚集,兩者拮抗維持血管張力平衡。低劑量 aspirin 不可逆抑制血小板 COX-1、選擇性壓下 TXA2,即抗血小板治療的基礎機轉。",[25,28,30,32],{"term":26,"count":27},"血栓素 A2",3,{"term":29,"count":11},"血管收縮與血小板聚集",{"term":31,"count":11},"COX 途徑",{"term":33,"count":11},"與 PGI2 拮抗",[35,39,44,49,54,59],{"webId":36,"stem":37,"number":38,"year":10,"session":11},"nurse-106-1-basic-medicine-056","下列何種利尿劑可減少尿路結石及骨質疏鬆的發生率？",56,{"webId":40,"stem":41,"number":42,"year":10,"session":43},"nurse-106-2-basic-medicine-072","對於「D 型肝炎」的敘述，下列何者錯誤？",72,2,{"webId":45,"stem":46,"number":47,"year":48,"session":43},"nurse-107-2-basic-medicine-006","心臟的電位傳導系統中，何構造位於冠狀竇開口處？",6,107,{"webId":50,"stem":51,"number":52,"year":53,"session":43},"nurse-108-2-basic-medicine-044","下列何者為常見的小球性（microcytic）貧血的原因？",44,108,{"webId":55,"stem":56,"number":57,"year":58,"session":11},"nurse-110-1-basic-medicine-008","下列關於內分泌細胞的敘述，何者錯誤？",8,110,{"webId":60,"stem":61,"number":62,"year":63,"session":11},"nurse-111-1-basic-medicine-042","肝臟因為慢性右側心臟衰竭發生嚴重充血現象時，肝小葉中心區域出現出血性壞死，稱為：",42,111,"2026-09-04",1788510691409]