Entire process of electrocardiogram recording of Wellens syndrome:A case report  

作　　者：Na Tang Yi-Hua Li Liang Kang Rong Li Qing-Min Chu 

机构地区：[1]The First Clinical Medical College,Guangzhou University of Chinese Medicine,Guangzhou 510000,Guangdong Province,China [2]Department of Cardiovascular Disease,The First Affiliated Hospital of Guangzhou University of Chinese Medicine,Guangzhou 510000,Guangdong Province,China

出　　处：《World Journal of Clinical Cases》2022年第19期6672-6678,共7页世界临床病例杂志

摘　　要：BACKGROUND Wellens syndrome is an electrocardiogram(ECG)pattern seen in high-risk patients with unstable angina pectoris.It is characterized by inverted or biphasic T-waves that change into positive or pseudo-normalized waves at precordial leads when the patient experiences an angina attack;however,the mechanism for this condition remains unclear.CASE SUMMARY A 47-year-old male patient experienced repeated,unprovoked episodes of chest pain for>20 d,with worsening during the previous day.On the day of admission,he experienced episodes of paroxysmal chest pain lasting more than 30 min,in addition to radiating pain to the left arm and exertional dyspnea.The patient presented to the emergency department with no chest pain or other discomfort at that time.ECG at presentation showed sinus tachycardia and Twave changes,which were identified as Wellens syndrome when combined with previous ECG findings.ECGs and myocardial enzymology examinations were normal when angina was present,but the ECG showed inverted or biphasic Twaves when angina was absent.After percutaneous coronary intervention,the ECGs demonstrated inverted or biphasic T-waves in the anterior precordial leads on days 0,1,and 2,but normal T-waves on day 3.The ECGs showed no subsequent ischemic ST-T-wave changes.CONCLUSION The Wellens syndrome pseudo-normalized T-waves likely reflect development of unstable angina pectoris into the hyperacute phase of ST-segment elevation myocardial infarction.

关 键 词：Wellens syndrome Pseudo-normalized T-waves Unstable angina pectoris Myocardial ischemia ELECTROCARDIOGRAM Case report 

分 类 号：R540.41[医药卫生—心血管疾病] R541.4[医药卫生—内科学]