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- W3109307966 abstract "Abstract Background Esophageal injury caused by cryoballoon-based PVI is common. Cryoablation guided by transoesophageal echocardiography (TEE) for occlusion of the pulmonary vein (PV) is safe and effective. Objective To investigate the protective effect of mechanical displacement of the esophagus by TEE probe in cryoablation of atiral fibrillation. Methods Fifty patients with paroxysmal AF (PAF) were enrolled in the present study. 25 patients underwent cryoablation without TEE (non-TEE group) and the other 25 underwent with TEE (TEE group) for PV occlusion guidance and displacement of the esophagus. In the TEE group during the procedure, TEE was used to guide the movement of the balloon to achieve PV occlusion. And before freezing, the probe of the TEE was moved to displace the esophagus away from the PV being freezed in order to reduce the risk of cryoinjury. All patients underwent esophagogastroscopy within 2 days of the procedure. The patients were followed up in our center at regularly scheduled visits every 2 months. Results There was no significant difference between the TEE group and non-TEE group in regard to the procedure time. The fluoroscopy time in the TEE group was less compared to the non-TEE group (4.1±3.3 min vs. 16.6±6.9 min, P<0.05), and the amount of contrast agent in the TEE group was less than the non-TEE group (4.7±5.7ml vs. 17.9±3.4 ml, P<0.05). The incidence of esophageal injury was significantly lower in TEE group compared with non-TEE group (0 vs. 20%, P<0.05). At a mean of 14.0 months follow-up, success rates were similar between the TEE group and non-TEE group (80.0% vs. 84.0%, P=0.80). Conclusion Cryoablation of AF with TEE for protecting the esophagus from cryoinjury is safe and effective. Lower risk of esophageal injury can be achieved with the help of TEE probe movement for mechanical displacement of the esophagus during freezing. Funding Acknowledgement Type of funding source: None" @default.
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- W3109307966 date "2020-11-01" @default.
- W3109307966 modified "2023-09-27" @default.
- W3109307966 title "The effect of displacement of the esophagus by transoesophageal echocardiography probe in cryoablation of atiral fibrillation" @default.
- W3109307966 doi "https://doi.org/10.1093/ehjci/ehaa946.0573" @default.
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