Bradycardia-induced cardiomyopathy
10.3760/cma.j.issn.2095-428X.2017.01.005
- VernacularTitle:心动过缓性心肌病
- Author:
Lin SHI
;
Lijun WANG
;
Hongmao WANG
- Keywords:
Cardiomyopathy;
Bradycardia;
Diagnosis;
Treatment
- From:
Chinese Journal of Applied Clinical Pediatrics
2017;32(1):14-16
- CountryChina
- Language:Chinese
-
Abstract:
Various of long-lasting and persistent bradyarrhythmia can induce cardiomyopathy.The pathogenesis of bradycardia-induced cardiomyopathy(BIC) is not clear,which is possibly related to significantly prolonged ventricular diastole,overloaded volume,changes of atrioventricular activation sequence,changes of atrioventricular sequence contraction,myocardial hypoperfusion,effect of neuroendocrine,etc.Diagnosis of disease includes a medical history of persistent bradycardia;relevant clinical symptoms (fatigue,dizziness,black Meng even syncope);the signs and symptoms of right or left heart failure in serious cases;electrocardiogram prompt bradycardia;echocardiography shows dilation of heart,less obvious reduction left ventricular ejection fraction (compensatory),but the left ventricle index can be decreased.Treatment is mainly to early identify the causes of bradycardia and remove it and pharmacotherapy,cardiac pacemaker therapy.Heart function can be back to normal after therapy(cardiac pacemaker).
