17 若病人因外流鉀電流減少而導致 Torsades de pointes 之心律不整,則下列那一種治療最不適當?
(A)補充鎂離子
(B)補充鉀離子
(C)給予 Isoproterenol
(D)給予 Quinidine
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統計: A(227), B(251), C(386), D(1712), E(0) #417331
統計: A(227), B(251), C(386), D(1712), E(0) #417331
詳解 (共 4 筆)
#3488911
Torsades de pointes(TdP)
(1)應校正惡化因子,如:低血鉀與低血鎂
→補充鎂離子、鉀離子
→使用靜脈注射Magnesium sulfate以延長再極化
(靜脈注射Magnesium sulfate是防止TdP復發的首選藥品 )
(2)給予 Isoproterenol
→如果病患合併心跳徐緩,此時isoproterenol是個神器,這個藥物是pure beta-1與beta-2 agonist,具有增加心臟收縮力與使心跳加快的作用
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#800734
Quinidine is a pharmaceutical agent that acts as a class I antiarrhythmic agent (Ia) in the heart.
Group 1 antiarrhythmics: Sodium-channel blockers, which block the fast sodium channels, thereby slowing electrical conduction in the heart.
副作用: TDP
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