|
|
Application of ECG in diagnosing acute myocardial infarction in hyperacute phase |
|
|
Abstract Objective To investigate the clinical value of ECG in diagnosing acute myocardial infarction(AMI) in hyperacute phase. Methods Ninety patients diagnosed with AMI in hyperacute phase by our hospital from January 2013 to January 2015 were selected. They were randomly divided into three groups: A(55 cases), B(18 cases) and C(17 cases), with onset time of ≤2 h, 2-6 h and 6-8 h, respectively. Twenty-four hour ECG monitoring was carried out on the three groups. The changes of Q-wave, ST-segment and T-wave were carefully recorded, and the rates of positive changes were made statistic analysis. Results It was observed by 24hour ECG monitoring that positive ECG changes of all the enrolled cases were mainly Q-wave, ST-segment and T-wave changes. The sensitivity and specificity, and positive and negative predictive value of STsegment and T-wave changes were all higher than those of Qwave changes in diagnosing AMI in hyperacute phase. The incidence of positive ECG changes among the three groups was 81.82%, 38.89% and 17.65% in turn, with the rate of group A significantly higher than that of group B and C(P<0.05). In the patients of group A, the diagnostic positive rate of ECG in the cases with STsegment elevation myocardial infarction was significantly higher than that in non-ST-segment elevation myocardial infarction patients(34.09% vs. 18.18%, P<0.05). Conclusion It is critical to carry out 24-hour ECG monitoring on AMI patients in hyperacute phase, especially those within 2 hours of onset, in order to make accurate diagnosis and timely treatment. Wide and towering T-, and ST-segment elevation can be regarded as characteristic ECG manifestations of AMI in hyperacute phase, which provide references for clinical diagnosis and treatment.
|
|
|
|
|
[1] DominguezRodriguez A, AbreuGonzalez P, Reiter RJ. Cardioprotection and pharmacological therapies in acute myocardial infarction: Challenges in the current era[J].World J Cardiol, 2014, 6(3):100-106.[2] Reddy K, Khaliq A, Henning RJ. Recent advances in the diagnosis and treatment of acute myocardial infarction[J].World J Cardiol, 2015, 7(5):243-276.[3] 杨志寅.心电学词典[M]. 2版. 北京:中国医药科技出版社,2006:109.[4] 石金河, 户瑞丽, 杨亚勤, 等. 心电图QT离散度与急性脑血管病患者血清酶学变化相关性研究[J]. 重庆医科大学学报, 2013, 38(11):1341-1344.[5] 郭继鸿.心电图学[M]. 北京:人民卫生出版社, 2002:191.[6] 周晓莉. 心电图动态观察对心肌梗死的诊断意义[J]. 中国实用医药, 2014, 9(2):49-50.[7] 陈新. 黄宛临床心电图学[M]. 6版. 北京:人民卫生出版社, 2009:56. |
|
|
|