Shark fin sign: an electrocardiogram patter of acute ST segment elevation myocardial infarction with left main occlusion
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摘要: 鲨鱼鳍征是一种与冠状动脉(冠脉)左主干闭塞引起的急性心肌梗死(AMI)相关的高危心电图改变，其特征是QRS波、ST段与T波融合形成R波，形态酷似鲨鱼鳍。该特征心电图与患者高危猝死相关。左主干闭塞患者大部分在院前即发生死亡，较难采集到一手心电图资料，现报道1例经冠脉造影证实为左主干闭塞且心电图呈鲨鱼鳍样改变的AMI患者，以提高临床对鲨鱼鳍征心电图改变的认识，减少漏诊和误诊。Abstract: The shark fin sign is a high-risk electrocardiogram(ECG) pattern associated with acute myocardial infarction(AMI) resulting from occlusion of the left main(LM) coronary artery, which is characterized by the fusion of QRS wave, ST segment, and T wave into a giant R wave resembles the shape of a shark's fin and links to a heightened risk of sudden death in patients. It is difficult to obtain firsthand ECG of patients with LM occlusion, because of the high mortality rate before entering the hospital. This is a case study involving an AMI patient with confirmed LM occlusion by coronary angiography performed the shark fin sign pattern in ECG, which is aimed to enhance understanding of the pattern and reduce missed diagnosis or misdiagnosis.
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Key words:
- shark fin sign /
- giant R wave /
- λ wave /
- acute myocardial infarction /
- left main occlusion
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