Abstract:

Purpose: In patients with second atrial septal defect (ASD), it is known that many electrocardiographic parameters that reflect atrial reformation and electrical heterogenity, such as p wave dispersion (PWDis), p wave maximum time (PWDmax), interatrial block (IAB), PR distance, are useful in anticipating the development of atrial fibrilation (AF). A new electrocardiographic parameter that reflects atrial reformation and electrical heterogeneity, we have studied whether the P wave peak time (PWPT) is correlated with other p wave indicators in patients with ASD with ecocardiographically right heart failure. Materials and Methods: The study included 46 patients diagnosed with ASD and 50 healthy adults. All patients’ previous transistoric ecocardiography (TTE) and transözefageal ecocardiography (TEE) reports were provided from the archive. The study also not included patients with non-normal right ventricular functions, those with severe cover pathology and those with additional congenital heart disease. Also, electrocardiography (ECG) was taken to all patients and detailed analyses were carried out after being transferred to personal computers. Results: In Spearman's correlation analysis we did to evaluate the correlation between PWPTD2 and ecocardiographic and electrocardiographic parameters, we found that PWPTD2 has a meaningful correlation with PWDis (r=0,355, p<0,001), PR interval (r=0,211, p<0,001) and IAB (r=0,338, p=0,001). In the correlation analysis between ecocardiographic parameters and PWPTD2, we found that the right atrium area (RAA) (r=0,211, p=0,039) and the right atrium broadest diameter (RAD) (r=0,435, p<0,001) showed a meaningful correlation (Table 5). Result: This study has shown that PWPTD2 has a significant correlation with other atrial repolarization parameters in ASD patients. As a result; PWPTD2 can be used as a determiner in the prediction of AF development in ASD patients where the right ventricular functions are preserved.

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