内科学(SCD).ppt

文档介绍：SUDDEN CARDIAC DEATH
Yuanxiu Chen, MD,
DEPT. OF CARDIOLOGY
RENMIN HOSPITAL
WUHAN UNIVERSITY
DEFINITION
Sudden cardiac death：unexpected natural death due to a cardiac cause within a short time period from the onset of symptoms in a person without any prior condition that would appear fatal
Key points
Time
≤1 hour (24hours) from the onset
Cardiac arrest Discontinuation of blood supply to brain
Die or survive
History of heart disease:
with or without
Pathophysiological Mechanism病理生理机制
Life threaten arrhythmias arising from several pathological condition
Tachyarrhythmias
Bradyarrhythmias or asystolic arrest
Pulseless electrical activity,PEA
Tachyarrhythmias
快速性心律失常
Ventricular fibrillation 70% 心室颤动
Sustained ventricular tachycardia <2%

持续性室速
Bradyarrhythmias or asystolic arrest
缓慢性心律失常 心搏停顿
Sinus asystole
Pulseless electrical activity,PEA
(无脉搏性电活动)
Electromechanical dissociation
(电机械分离)