[{"data":1,"prerenderedAt":66},["ShallowReactive",2],{"q-nurse-113-3-basic-medicine-017":3},{"subject":4,"subjectSlug":5,"subjectFullName":6,"question":7,"related":34,"lastmod":65},"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-113-3-基礎醫學-017","nurse-113-3-basic-medicine-017",113,3,17,"一個 70 歲老人的心電圖（ECG）如下，他的心跳每分鐘約多少下？",{"A":15,"B":16,"C":17,"D":18},"70","78","94","104","A",null,[],"本題考點在於由心電圖判讀心跳速率的計算方法,惟本題需依附圖判讀而題面未提供實際波形,以下依官方答案 A(70 次\u002F分)說明推理。臨床上估算心率常用「300 除以兩個 R 波間的大格數」或「1500 除以小格數」(每小格 0.04 秒、每大格 0.2 秒)。若相鄰 R-R 間距約為 4.3 個大格,則 300÷4.3 約等於 70,對應答案 A。本題屬圖形依賴題,實際數值取決於圖上 R-R 間距的格數,無法在缺圖下逐一排除其他選項,僅能說明計算原則:間距愈寬心率愈慢、愈窄愈快。此題把握度標低,提醒作答時務必以實際附圖量測 R-R 間距為準。","心率估算法整理:規則性心律可用 300 法則背口訣——R 波落在第一條粗線後的每一粗線依序為 300、150、100、75、60、50 次\u002F分,數下一個 R 波落在第幾條即得心率;或用 1500÷小格數(精確);不規則心律則用 6 秒條紋數 QRS 個數乘 10。70 歲長者常見竇性心律或心房顫動,需結合節律規則性判讀。因本題正確作答完全依賴無法檢視的心電圖波形,故據實標低把握度,不臆測數值。",[25,28,30,32],{"term":26,"count":27},"心電圖心率計算",1,{"term":29,"count":27},"R-R 間距",{"term":31,"count":27},"300 法則",{"term":33,"count":27},"圖形依賴題",[35,39,45,50,55,60],{"webId":36,"stem":37,"number":38,"year":10,"session":11},"nurse-113-3-basic-medicine-018","抗利尿激素（antidiuretic hormone）在下列那個腦區合成？",18,{"webId":40,"stem":41,"number":42,"year":43,"session":44},"nurse-114-2-basic-medicine-014","下列何者為清醒狀態（awake state）時，神經傳導物質所媒介的神經元活性表現？",14,114,2,{"webId":46,"stem":47,"number":48,"year":49,"session":27},"nurse-115-1-basic-medicine-008","下列何種激素最可能造成孕婦發生妊娠糖尿病？",8,115,{"webId":51,"stem":52,"number":53,"year":54,"session":44},"nurse-106-2-basic-medicine-026","迷走神經末梢分泌之乙醯膽鹼（acetylcholine）可以使心跳速率減慢，其原因為促使心臟節律性細胞（pacemaker cell）：",26,106,{"webId":56,"stem":57,"number":58,"year":59,"session":44},"nurse-107-2-basic-medicine-070","臘腸桿菌毒素（Botulinum toxin）可以用於美容除皺之機制為何？",70,107,{"webId":61,"stem":62,"number":63,"year":64,"session":27},"nurse-109-1-basic-medicine-024","在排卵後一天，與排卵日相比，下列何種激素在血中的濃度不會下降？",24,109,"2026-09-04",1788510751638]