本期推送關於腦卒中的醫學基礎教育視頻，由兩段來自美國medlineplus的相關資料拼接而成。「國際醫聲」加配全文英文文本及重點詞彙中文注釋。也配有純音頻版利於反覆播放練習聽力。
Stroke
中風（腦卒中）
一、視頻(具有點斷續播功能）
二、音頻（連續播放；退出信息還可繼續播放）
A blood clot, or embolus（栓子）, can form and break-off from the heart. The clot travels through the blood stream where it can lodge（停留） in an artery of the brain, blocking the flow of oxygen-rich blood. The lack of oxygen results in damage, destruction, or even tissue death of the brain beyond the affected area. The result is a stroke.
A stroke can occur if an embolism travels from another part of the body and lodges within an artery in the brain. When an internal arterial wall becomes damaged, various types of emboli can form, such as one derived from platlets（血小板）, thrombotic（血栓類）, cholesterol（膽固醇）, or mixed. Here, an embolism is formed in the internal carotid artery（頸內動脈）, and breaks loose, travelling towards the brain. The blocked artery deprives the brain of oxygen, damaging the surrounding brain tissue. The result is a stroke.
版權聲明；視頻來源於美國Medlineplus公開教育資源，版權為The A.D.A.M. Medical Encyclopedia所有。國際醫聲團隊選取並編輯合成。參與工作的團隊人員：郭旭光博士、沈可心、隗江城、張強、譚亞娣博士
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