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目的：探讨心力衰竭前后Q-T间期变化与病情的相关性研究。方法选择符合心力衰竭诊断标准的38例患者,应用纳龙科技十二导心电图记录仪入院时同步记录十二导联心电图,分别记录同一患者不同心功能级数心电图,并比较同一患者不同心功能级别时QT间期差别。结果38例心力衰竭患者在治疗好转过程中,1、11级QT间期与111、1V级相比有显著性差异(0,05)。结论 QT间期是一项无创,可重复性检查数据,对心力衰竭治疗恢复程度有实际参考价值,但同时仍需考虑个体因素。“,”Objective To study the heart failure Q - T between before and after the period change and the correlation of disease research. Methods choose heart failure diagnosis standard of 38 patients, application, dragon technology of 12-lead ecg recorder on synchronous record of 12 lead electrocardiogram (ecg), record the same patients with different heart function series electrocardiogram (ecg), and compare the same level of patients with different cardiac function between QT phase difference. Results 38 cases of heart failure patients in the treatment of improving process, level 1, 11 QT interphase compared with 111, 1 v level have significant difference ( 0.05). Conclusion QT interphase is a noninvasive and repeatable inspection data, for the treatment of heart failure recovery degree has practical reference value, but still need to consider the individual factors at the same time.