Clinical Research Of ECG Changes After Transcatheter Closure Of Ventricular Septal Defect

Objective：We report the electrocardiogram of patients in the diagnosis ofcongenital heart disease ventricular septal defect before and after transcatheterintervention therapy, find and analysis the regularity of electrocardiogram changes, toprovided the theoretical basis for improve the prognosis of congenital heart diseaseventricular septal defect.Methods：Research objects are the patients made a diagnosis for congenitalheart disease ventricular septal defect with Ultrasonic Doppler，and is not combinedwith other structural heart disease，total of146patients，67cases for males，79casesfor females，ages of the patients is between1.5and54years old（11.98±14.2onaverage），1-14years old，136cases，over the age of14years old，10cases. All patientsreceived the transcatheter intervention therapy according to the guidelines for themanagement with congenital heart disease，collect and analyze ECG data before andafter transcatheter intervention therapy，found abnormal electrocardiogram changesand analysis of influence factors.Results：1、In146patients，we found57cases（39%）with sinus arrhythmia，23cases（15.8%）with right bundle branch block，11cases（7.5%）with A-V junctionalrhythm，1case（0.7%） with complete atrioventricular.2、Sinus arrhythmia causedby surgical stress, right bundle branch block may occur under the influence of defectparts, A-V junctional rhythm occurs under the influence of age, the influence factorsof complete atrioventricular conduction block hard to statistical analysis because ofthe low incidence rate.3、Most of these abnormal electrocardiogram changes canrecover after several days without special treatment， patient with completeatrioventricular can recover in several days after temporary pacemaker implantation，hormone therapy and cardiac muscle nutrition.4、The amplitude of lead I s-wave ofthe VSD patients decreased after transcatheter closure of ventricular septal defect(TCVSD),the amplitude of lead V1r-wave increased after TCVSD (P＜0.01).Amplitudes of preoperative lead I s-wave and lead V1r-wave under the influence ofage，amplitudes of postoperative lead I s-wave and lead V1r-wave under the influence of the preoperative lead I s-wave and lead V1r-wave, there is alsosome unknown factors.5、There is no cases suffered permanent cardiac pacemakerimplantation or death.Conclusion：1、A-V junctional rhythm occurs under the influence of age.2、The amplitude of lead I s-wave of the VSD patients decreased after TCVSD, theamplitude of lead V1r-wave increased after TCVSD，it correlated with postoperativecardiac load changes.