Abstract
The Lorenz plot analysis improves the accuracy of arrhythmia diagnosis and is an appealing diagnostic tool for patients with arrhythmias. In this study, we explored the utility of the Lorenz plot in the classification of various types of neonatal atrial tachycardia and evaluated the treatment effects and prognosis. Ninety-six newborns (mean age of 9.43 ± 11.7 days) with atrial tachycardia had their dynamic electrocardiograms and clinical data collected between January 2018 and June 2023. They were divided into multifocal (30 cases), parasystole (19 cases), and atrial premature beat-induced atrial tachycardia (47 cases) groups based on the morphological characteristics of the Lorenz plot. The clinical features of the patients in each group were also analyzed and it was proved that the prevalence of cardiac structural abnormalities, viral infections, myocarditis, and heart failure significantly increased in the multifocal atrial tachycardia group. Additionally, the treatment, length of hospitalization and outcome varied notably among the different types of atrial tachycardia. The multifocal atrial tachycardia group's hospitalization days were the longest (19.6 ± 5.4 days). All patients were followed up for a median period of 8.2 months (range 2months–4years) after discharge, and all instances were controlled except for four lost to follow-up. The analysis of distinct Lorenz plot patterns allowed for the identification and classification of neonatal atrial tachycardia, which could improve the diagnostic efficiency of neonatal atrial tachycardia and assist clinical physicians in making better judgments based on the type of atrial tachycardia.