3.3 Procedural characteristics and follow-up data
All procedures were successful. Most patients had complete LAA seal except for 2 cases in ICE group and 3 cases in TEE group with small residual leak < 3mm. The fluoroscopy time, radiation dose and contrast usage were significantly lower in ICE group than TEE group. There was no significant difference in procedural time and device resizing rate (Table 2). The 45-day TEE follow-up rates were similar in both groups (95% vs. 94%). The complete seal rate in ICE group and TEE group was 68.4% and 70.2%, respectively. No peri-device leak > 3mm was observed during follow-up TEE exams. Compared with TEE group, ICE group had a higher trend in prevalence of iatrogenic atrial septal defects (52.6% vs 34%, P= 0.085), but the sizes were similar in both groups (3.6mm vs 3.3mm, P=0.529) (Table 3). No device-related thrombus was detected in either group.