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目的:探讨胸导联ST段下降在急性下壁心肌梗死(AIMI)中的临床意义。方法:选择AIMI患者83例,观察胸导联ST段下降与梗死部位、严重心律失常的关系。结果:(1)单纯下壁心肌梗死伴胸导联ST段下降者少(P<0.05),下壁伴正后壁心肌梗死中伴胸导联ST段下降者多(P<0.05)。(2)伴胸导联ST段下降者严重心律失常的发生率高(P<0.05和P<0.01)。结论:AIMI伴胸导联ST段下降考虑前壁心肌缺血,容易发生严重心律失常。
Objective: To investigate the clinical significance of thoracic lead ST segment depression in acute inferior myocardial infarction (AIMI). Methods: 83 patients with AIMI were selected to observe the relationship between ST segment depression of chest lead and infarction site and severe arrhythmia. Results: (1) The incidence of ST segment depression was lower in simple inferior myocardial infarction with chest lead (P <0.05), while in inferior wall with posterior wall myocardial infarction was more in ST segment of chest lead (P <0.05). (2) The incidence of serious arrhythmia was significantly higher in patients with ST-segment descending of chest lead (P <0.05 and P <0.01). Conclusion: AIMI with chest lead ST segment depression consider anterior myocardial ischemia, prone to severe arrhythmia.