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通过对９５例ＡＭＩＱＴｄ值测试，探讨了ＡＭＩ时危险性心律失常与急性泵衰竭的关系，结果ＡＭＩ无并发症组ＱＴｄ值５７７６±１２４２；危险性心律失常组ＱＴｄ值７４４±１８８７；急性泵衰竭组ＱＴｄ值６２６６±１３２１，两两比较ｑ检验显示，对照组与泵衰组的Ｐ＞００５无统计学意义，对照组与心律失常组Ｐ＜００１，泵衰组与心律失常组Ｐ＜００１，均有显著差异。结论：ＡＭＩ，危险性心律失常组ＱＴｄ值增大最为显著，泵衰竭组中ＱＴｄ值与对照组无统计学意义，动态观察ＱＴｄ值的变化有重要价值
95 cases of AMIQTd value test to explore the relationship between AMI risk arrhythmia and acute pump failure, the results of AMI non-complication group QTd 57 76 ± 12 42; QTd risk arrhythmia group 74 4 ± 18 87; Acute pump failure group QTd value of 62 66 ± 13 21, any comparison of q test showed that the control group and pump failure group P> 0 05 no significant difference between the control group and arrhythmia group P < 0 01, pump failure group and arrhythmia group P <0 01, were significantly different. Conclusion: The QTd value increased most significantly in AMI and risk arrhythmia group, while the QTd value in pump failure group was not significantly different from that in control group, and the dynamic observation of QTd value had important value