Objective To investigate the electrocardiogram changes and explore the effect on cardiac electrical activity in new coronavirus pneumonia patients

and in order to assist in clinical diagnosis and treatment. Methods Retrospectively analyzed the COVID-19 patients in Huoshengshan Hospital from February 5 to March 10

2020. We collected and analyzed the general information

ECG changes and related laboratory indication in all the 280 patients.Results There were 165 male patients（58.9%）

115 females（41.1%）

age range from 21 to 85 years old

the median age was 53 years old

in which it included 67 of type common

184 of type severe and 29 of type dying. There were138 patients（49.3%） had underlying diseases such as hypertension

diabetes and coronary heart disease. ST-T change was the most common change in the all patients

accounting for 31.1%

followed by arrhythmia

the number is26.9%

which was based on premature beat（7.2%）. hypersensitive response troponin（hs-c Tn） was higher than reference value in 21（7.2%） patients of type severe

obvious abnormality which 10 times above the upper limit of the reference value in 9（3.2%） patients

but only 1（0.4%） case was diagnosed as acute myocardial infarction. The rates of abnormal ECG between type severe（75.0%） and type dying（100%） was significantly higher than type common（23.9%）. Conclusions ECG changes are common in COVID-19 patients

but less malignant arrhythmia

most of it was ST-T change

atrial and ventricular arrhythmia. The incidence of abnormal ECG is very high between type severe and type dying patients

in which arrhythmia is common. Correspondingly ST-T change is usual in type common patients. The persons with high blood pressure

diabetes

coronary heart disease are more predisposed to suffer from COVID-19. In some severe patients

hs-c Tn was very high

which suggest myocardial injury rather than myocardial infarction.