Abstract：Objective To explore the value of RRLorenz plot in the diagnosis of frequent atrial premature beats(FAPB) and atrial parasystolic rhythm(APSR). Methods The dynamic electrocardiography(DCG) of 594 patients with FAPB were retrospectively analyzed by using traditional and RRLorenz plot analysis method respectively. Results Fiftythree patients and 78 patients were diagnosed as APSR and FAPB respectively by using traditional analysis, while 70 patients and 45 patients were diagnosed as APSR and FAPB by using RRLorenz plot analysis method. There was a significantly difference between the traditional method and RRLorenz plot method（χ2=4.629， P=0.032； χ2=4.939, P=0.026）.Compared to traditional analysis, the aggregate of premature beat and that of atrial premature beats failing to transfer examined by RRLorenz plot were increased significantly (t=9.263,t=5.28;P=0.018,P=0.022). A further analysis revealed that there was significant difference among the two analysis methods in intraventricular aberrant conduction, fusion wave and atrial premature failing beats to transfer(P<0.05).Conclusion RR-Lorenz plot is of great value to the diagnosis of atrial arrhythmia and could identify FAPB and APSR quickly.
