摘要
1 Introduction Virtually all cardiovascular diseases including arrhythmias,valve disease,coronary artery disease and heart failure(HF)are increasingly common with advancing age.^([1])Age and disease-related changes in the heart including fibrosis in the atrial and ventricular myocardium and conduction system,scar tissue from myocardial infarction or other cardiomyopathic processes,increased inflammatory cytokines and changes to ion channels are just some of the factors that predispose older adults to arrhythmias.^([2]).