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目的总结ST段抬高型急性心肌梗死合并J波综合征患者的心电图特征。方法分析入选的69例ST段抬高型急性心肌梗死合并J波综合征患者的心电图,观察J波的形态,出现最明显的部位,出现的时间和消失的时间,所出现的心律失常类型。结果ST段抬高型急性心肌梗死合并J波综合征患者有明显J波的4例,占总J波综合征人数的5.8%;JT部分融合J波尚可分辨的11例,占总J波综合征人数的15.9%;JT完全融合,J波不可分辨的54例,占总J波综合征人数的78.3%。下壁受累的患者共有57例(82.6%),所有前壁受累(除去含下壁)的患者共12例(17.4%)。无J波伴病理性Q波及J波伴T波倒置的病例。发病后(3.9±2.5)h出现J波,(26.7±17.8)h后消失。结论ST段抬高型急性心肌梗死合并J波综合征可能仅出现在心肌梗死的超急期,J波形态多变,下壁多受累,且容易出现室性心律失常。
Objective To summarize the electrocardiographic features of ST segment elevation acute myocardial infarction with J wave syndrome. Methods The electrocardiogram of 69 patients with ST-elevation acute myocardial infarction complicated with J wave syndrome were analyzed. The morphology of J wave, the most obvious location, the time of emergence and the time of disappearance were observed. The type of arrhythmia occurred. Results In ST-segment elevation acute myocardial infarction with J-wave syndrome, there were 4 cases with obvious J wave, accounting for 5.8% of the total number of J wave syndrome; JT partial fusion with J wave still resolvable in 11 cases, accounting for total J wave 15.9% of the total number of syndromes; JT complete fusion, J wave indistinguishable 54 cases, accounting for 78.3% of the total number of J wave syndrome. A total of 57 patients (82.6%) were involved in the inferior wall, and 12 (17.4%) had all anterior wall involvement (excluding the inferior wall). No J wave with pathological Q wave and J wave with T wave inversion cases. After onset (3.9 ± 2.5) h, J wave appeared and disappeared after (26.7 ± 17.8) h. Conclusion ST-segment elevation acute myocardial infarction combined with J-wave syndrome may appear only in the acute phase of myocardial infarction. The J-wave morphological changes, the inferior wall involvement, and prone to ventricular arrhythmias.