心腔内超声在卵圆孔未闭封堵术中的应用

目的探讨心腔内超声(ICE)在经导管卵圆孔未闭(PFO)封堵术中的应用价值。方法应用ICE观察86例PFO的解剖形态及周围结构，测量PFO通道的直径和长度，监测与引导封堵过程、伞释放后位置，并通过彩色血流显像和超声造影判断有无残余分流。结果ICE清晰地观察到各种形态的PFO，86例中有85例封堵成功，1例失败。结论ICE指导经导管封堵PFO是一种安全、有效、简便和创伤小的方法。

Guidance of patent foramen ovale occlusion by intracardiac echocardiography

Objective To explore the practical value of intracardiac echocardiography (ICE) on transcatheter closure of patent foramen ovale (PFO). Methods Eight-six patients with PFO were occluded using CardioSEAL under guidance of ICE. A diagnostic ICE was performed for imaging PFO anatomy and monitoring the closure procedure. Measurements of PFO tunnel diameter and length were made by ICE. The device deployment was evaluated by 2-D and color Doppler ICE after release, and then any residual shunt was detected by ICE agitated saline contrast study. Results ICE showed detailed anatomy of PFO and variations in morphology such as redundant secundum septum, convex secundum septum, tissue extension of primum into the fossa ovalis and hypertrophic limbus. Of 86 cases, 85 cases had successful implantation of the CardioSEAL, 1 case failed.Conclusions Transcatheter closure of PFO guided by ICE is a safe, effective, simple and less invasive solution.