Abstract:ObjectiveTo investigate the electrocardiogram(ECG) features of pregnant women during the secondthird trimester gestation.MethodsThe 12 lead ECG machine automatically and synchronously traced ECGs of 380 cases of secondthird trimester pregnant women and 300 healthy women, and their ECGs were also compared.ResultsThere were 266 cases of ECG abnormality inspected from 380 pregnant women(accounting for 70%), among which arrhythmia, short PR intervals and STT changes occurred in 122, 29 and 63 cases respectively.ConclusionCompared with healthy women, the incidence of ECG abnormality of pregnant women during the secondthird trimester gestation is significantly higher, especially the incidence of arrhythmia.