FIGURE 6.

Electrophysiological changes during the final period of discrete activity. Electrophysiological parameters were determined at three critical time points towards AF termination; Before: the average of the whole period before the final discrete activity (FDA) occurred, first: the first cycle of the FDA and last: the final cycle of the FDA. The results for the whole dataset are presented in the left panels. Panels to the right present data for the individual groups, with each line representing a group. An FDA could only be detected if at least one transition from continuous to discrete activity occurred. As a consequence, not all terminations could be included, and the number of FDAs differed between atria. 64 FDAs were observed in the right atrium and 58 in the left atrium. Data were statistically analyzed with a Friedman’s test. ***p < 0.001 ****p < 0.0001.