心室复极化时程变异的检测研究

ＱＴ间期受到前一ＲＲ间期和心室肌细胞状态的影响，因此对心室复极化时程变异（ｒｅｐｏｌａｒｉｚａｔｉｏｎ ｄｕｒａｔｉｏｎ ｖａｒｉａｂｉｌｉｔｙ，ＲＤＶ）的分析可用来评价心室疾病状况。由于ＱＴ间期检测困难，一般以ＲＴ间期代替ＱＴ间期。我们采用以相关系数为条件的模板匹配的方法检测Ｔ波峰值点。受试者受控呼吸时，从ＨＲＶ和ＲＤＶ谱分析的结果可以看高，高频峰受到呼吸频率的调制。在乌拉坦麻醉下用阿托品改变大

A Research of Ventricular Repolarization Duration Variability Analysis

The QT interval is affected by the prior RR interval and the state of ventricular myocardial.So the ventricular diseases can be evaluated with RDV analysis.Generally,the RT interval is used instead of QT interval,because it is very difficult to detect QT interval.In our care,the peak of the T wave was detected by template matching with correlation coefficient as given condition.When the subject's respiration was controlled,the peak of high frequency of the HRV and RDV spectrums was seen modulated with respiration rate.Similar result was found,when respiration rate of rat under Urethan anesthesia was changed with Atropine.These results proved reliability of the RDV detection method.It lays a good foundation for future research of ECG parameters of ventricular repolarization.The result will be of benefit for earlier diagnosis and prognosis evaluation of ventricular diseases.