3.2 RT-3DE and 2D-STI parameters
The parameters obtained by RT-3DE are shown in Table 2. Compared with
control group, LAVImax, LAVIp and LAVImin in paroxysmal AF group and
persistent AF group increased in turn, but LATEF, LAAEF and LAPEF
decreased in turn. The left atrial volume curves obtained by RT-3DE
among the three groups are shown in Figure 2.
Left atrial strain measured by 2D-STI among the three groups are shown
in Table 2. The LASr, LASct and LAScd of patients in persistent AF group
were significantly lower than those in paroxysmal AF group, while the
left atrial strain of patients in paroxysmal AF group were significantly
lower than those in control group. Figure 3 shows the left atrial strain
curves obtained by 2D-STI among the three groups.