Abstract:Objective To explore the clinical significance and pathogeny of low voltage changes on ECG. MethodsThe data of 132 patients were collected who were diagnosed with low voltage by surface ECG and were in hospital from June 2013 to March 2014. Their pathogeny and clinical characteristics were analysed.Results① Among the 132 patients, there were 32 patients(24%) with precordial low voltage, 87(66%) with limb low voltage, and 13(10%) with both precordial and limb low voltage. ② Sixtynine patients(52%) suffered from cancers, lung cancer ranking at the first place.③ Of all the patients with cardiac functional insufficiency, anterior wall infarction and dilated cardiomyopathy were the main causes of diseases.ConclusionCancers might be the main causes of low voltage on ECG.