Figure 3. 6 patients with residual flow revealed by TEE.Red arrow indicates residual flow. Figure A-Ddemonstrated residual flow after LAAC with Watchman device. All four cases had residual flow at the inferior border at 135°, with sizes of 1.7 mm (A ), 2.1 mm (B ), 1.6 mm (C ), 0.9mm (D ) measured in the 3rd month follow-up respectively. Residual flow occurred instantly and persisted in two patients (A & B ) while developed during follow-up rather instantly in the other two patients (C & D ). Figure E & F showed residual flow after LAAC with LAmbre device. Both cases developed residual flow at the LAR border at 90° during follow-up, with sizes of 4.2 mm (E ) and 2.5 mm (F ) respectively.