Application of Transesophageal Echocardiography in Amplatzer Atrial Septal Defect Occluder for Percutaneous Closure of Large Patent Foramen Ovale

Table 2

Residual shunt rate of the PFO after closure by group.

c-TTE results	Group I; ()	Group II; ()
6-month follow-up			0.033
Negative	33 (68.8)	37 (52.9)
Small residual RLS	11 (22.9)	15 (21.4)
Moderate residual RLS	2 (4.2)	5 (7.1)
Large residual RLS	2 (4.2)	13 (18.6)
12-month follow-up			0.035
Negative	38 (79.1)	45 (64.3)
Small residual RLS	7 (14.6)	12 (17.1)
Moderate residual RLS	1 (2.1)	4 (5.7)
Large residual RLS	2 (4.2)	11 (15.7)

PFO: patent foramen ovale; RLS: right-to-left shunt.