[Evaluation of the risk of atrial fibrillation using disperse analysis of P in ECG].

The aim of the study was to find new ECG markers of atrial fibrillation (AF) risk. The clinico-functional status of 371 patients was studied using standard 12-lead ECG. According to 24-hour monitoring, 190 (51.2%) patients had AF, while 181 (48.8%) patients did not. The groups were age- and gender-comparable. The study demonstrated low significance of P elongation in standard lead II in the two groups (15.3% and 18.8% of cases, respectively) and Macrus index (18.9% and 17. 7%, respectively). At the same time, the minimum P length in all 12 leads was significantly lower in patients with AF (an average of 63.28 and 70.05 msec, respectively, p < 0. 05). The most significant differences were observed in the values of normalized P length (an average of 15.68 and 29.50 msec, respectively, p < 0.05) and P dispersion (an average of 51.28 and 42.39 msec, p < 0.05). The study found certain peculiarities of the dynamics of these parameters in correlation with a growth of AF frequency, as well as the importance of their correlation with the presence of heart failure and stable stenocardia. The authors presume that new markers of AF risk should be evaluated through disperse analysis of standard ECG registered in 12 standard leads.