The Analysis Of The Clinical Factors In Dilated Cardiomyopathy Associated With Arrhythmia

Objective: To realize the clinical characteristics of arrhythmia in DCM byreviewing the ultrasound heartbeat graph, electrocardiogram and clinical data of127patients with DCM, and carry on the preliminary discussion to the related clinical factorsof arrhythmia in patients with DCM.Methods:127patients (male87cases, female40cases)who were confirmed withdilated cardiomyopathy,with an mean age of50.7±12.8years old were included in thisstudy. According to the NYHA standard,127cases are divided into three groups bycardiac function rating: II in30cases, III in28cases, IV in69cases；According to theleft ventricular end diastolic diameter is divided into three groups: LVEDd<60mm in24cases, LVEDd60to70mm in60cases, LVEDd＞70mm in43cases; Whether thepatients with infection are divided into infection group with39cases and88caseswithout infection. The incidence rate in the three classes’ patients with or without simplearrhythmia and complex arrhythmias were compared. Whether the patients with theserious ventricular arrhythmia were divided into: severe group75cases and non seriousgroup of52cases。Whether the patients with atrial fibrillation were divided into: atrialfibrillation group of27cases and100cases of non AF group；The age, LVEF, left atrial(ventricular) diameter in two groups of patients was compared.Results:.1.The incidence of arrhythmia in this study was100%.All the patients canassociated with variety of cardiac arrhythmias: atrial arrhythmia, ventricular arrhythmia,junction arrhythmia and ventricular block. The highest incidence rate of arrhythmias wasventricular arrhythmia.2. The ventricular arrhythmias in heart functional rating III and IV was mostfrequently. The incidence of ventricular tachycardia (VT)or/and frequent prematureventricular beats in the rating IV group were significantly higher than those in the rating II group and rating III group; and the ratting III group was higher than that of heartfunction in II group, P <0.05.3. The incidence rate of the simple arrhythmia in group with cardiac function rattingIV was significantly lower than the ratting II group; but the incidence rate of multiplearrhythmias in group with cardiac function ratting IV was higher than that of heartfunctional ratting II, P <0.05. The incidence rate of ventricular arrhythmias in groupwith LVEDd <60mm was significantly lower than the LVEDd>70mm group, P <0.05;the incidence rate of multiple arrhythmias in groups with LVEDd60~70mm and>70mm group was higher than that of LVEDd <60mm group,p <0.05.4. The left ventricular ejection fraction was lower in the serious ventriculararrhythmia group than that in the control group, and The LVEDd was larger in theserious ventricular arrhythmia group than that in the control group;p <0.05. The LAEDdwas larger in the AF group than that in the non AF group,p <0.05; The age and heartfunction between this two groups were no difference;5. Both of the incidence rate of VT or/and frequent premature ventricular beats andatrial tachycardia or/and frequent premature atrial beats were higher in the Infectiongroup than in non-infected group, p<0.05.Conclusion:1.The incidence rate of arrhythmia is high in dilated cardiomyopathy,especially in the ventricular arrhythmia, and the arrhythmia of DCM is various. Theworse heart functions of patients, the more easily with a variety of cardiac arrhythmias;2. The incidence rate of ventricular arrhythmias is associated with heart function ofpatients and LVEDd.The larger LVEDd of patients, the more easily associated withventricular arrhythmia;3. The incidence rate of AF is associated with LAEDd, the LAEDd was significantlyincreased in patients with atrial fibrillation, but there is no obvious relation with age,4. The incidence rate of arrhythmia in DCM is associated with infection; the DCMwith infection was easily induced arrhythmia.