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目的分析ST段抬高型急性心肌梗死出现J波综合征的临床特点。方法回顾性分析该院470例ST段抬高型急性心肌梗死患者的临床资料,观察心电图J波型态、测定Q-T离散度、心律失常类型及死亡患者人数等,应用SPSS11.5统计软件进行统计分析。结果J波综合征在急性下壁心肌梗死的发生率14.68%,在前壁心肌梗死发生率4.89%(P<0.05);不同性别间差异无显著性(男性25%,女性21.2%),(P>0.05);J波综合征患者Q-T离散度(51±25)ms,不伴J波综合征(46±23)ms,(P<0.05);其中J波综合征死亡者Q-T离散度(81±22)ms,存活者(46±22)ms,(P<0.05);J波综合征的患者恶性心律失常发生率40.2%,死亡率18.48%,不伴J波综合征的患者分别是29.1%和9.79%(P<0.05)。结论ST段抬高型急性心肌梗死出现J波综合征多累及下壁,患者的Q-T离散度增大,易发生室性心律失常,死亡率高。
Objective To analyze the clinical features of J wave syndrome in ST segment elevation acute myocardial infarction. Methods The clinical data of 470 patients with acute ST-segment elevation myocardial infarction in our hospital were retrospectively analyzed. The J-wave patterns of electrocardiogram, the QT dispersion, the type of arrhythmia and the number of death patients were analyzed retrospectively. SPSS11.5 statistical software was used to make statistics analysis. Results The incidence of J wave syndrome was 14.68% in acute inferior myocardial infarction and 4.89% in anterior myocardial infarction (P <0.05). There was no significant difference between male and female (25% in males and 21.2% in females) QT dispersion (51 ± 25) ms and J wave syndrome (46 ± 23) ms in J wave syndrome patients (P <0.05) 81 ± 22) ms, survivors (46 ± 22) ms, (P <0.05). The incidence of malignant arrhythmia in J wave syndrome was 40.2% and the mortality rate was 18.48%. The patients without J wave syndrome were 29.1% and 9.79% respectively (P <0.05). Conclusions There is more involvement of J wave syndrome and lower wall in ST segment elevation acute myocardial infarction. Patient’s Q-T dispersion is increased, ventricular arrhythmia is easy to occur and the mortality rate is high.