1. Comparison of clinical data and echocardiographic parameters
between the modeling group and validation group
5 PAF patients did not undergo CPVA due to left atrial appendage
thrombosis, and 8 patients did not undergo CPVA due to targeted
non-pulmonary venous disease. The study finally included 276 PAF
patients, including 169 males and 107 females. 103 cases (37.7%)
patients had MR before the operation. All patients completed the CPVA
and converted to sinus rhythm during the operation. All patients showed
reduced degree of MR regurgitation after the operation, no patients with
severe MR 3 months after CPVA. The patients were divided into recurrence
group (24 persons) and sinus rhythm group (252 persons) according to the
follow-up results at 3-6 months after operation. The PAF patients were
randomly divided into modeling group (203 cases) and verification group
(73 cases) by statistical software at a ratio of 75:25. The comparison
of clinical data and echocardiographic parameters between the two groups
is shown in Table 2. There was no statistical difference between the two
groups (P >0.05) in these parameters. The two
observers exhibited perfect consistency in the results of
echocardiographic parameter measurement (ICC:0.912–0.977, allP <0.001).