Abstract：Objective To evaluate the effect of voltage of QRS wave complex on prognosis after thrombolytic therapy，observation and comparison of three electrocardiograms about the voltage（R+S）of QRS wave complex of patients with anterior or anteroseptal AMI were carried out. Methods Sixty four patients with anterior or anteroseptal AMI ST segment elevations were collected. Their electrocardiograms were taken at admission，0.5-1 hour after thrombolytic therapy and the last day before pre-discharge. The voltage of QRS wave complex in anterior or anteroseptal leads of three electrocardiograms was analyzed. Results In infarction related leads，voltage of QRS wave complex differences in three electrocardiograms have no statistical significance（P>0.05）. Conclusion Variations of voltage（R+S）of QRS wave complex in chest leads cannot indicate the effect of thrombolytic therapy，which may improve revascularization rate，save dying myocardium，protect cardiac function，improve the prognosis，prevent heart failure and reduce the death rate.
2011, Vol. 20 
