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如同體內所有器官,腦部也需要氧氣和養分才能適當運作。維持生命的產物,藉由流經循環系統的血液輸送到腦部。 大腦某個部位缺血,導致組織壞死並喪失腦部功能時,就會發生中風。血管破裂例如動脈瘤,或者栓塞,都可能引致中風。自由浮動的血塊或粒子,卡在大腦動脈並阻斷血流,就會造成栓塞。 中風可能引起的症狀包括語言障礙、癱瘓、喪失意識甚至死亡,視受損的腦部區域而定。
Duration: 00:50
Published: 2016/2/25
化學治療是使用藥物殺死癌細胞。這些抗癌藥物通常採用靜脈輸注的方式給藥,按醫師處方以穩定的速度,將藥物滴入血流。但重複將針刺入靜脈,可能會造成靜脈結疤或...
Blausen Medical
Scientific and Medical Animations
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