3|DISCUSSION
Many complications such as deice embolization, erosion, bleeding,
arrhythmias, infection, air embolism and thromboembolism have been
reported in previous studies [2,3], embolization has the highest
incidence rate among all complications.The major time of embolization is
reported in the first 24h, and the most common sites are the main or
branched pulmonary artery and atrioventricular valve, rarely migrate to
the left side.However, several weeks or months after deployment, because
of endothelialization, device is firmly fixed in the tissue, there is
little chance for device to migrate. On the other hand, once these
devices of endothelial happen to migrate, retrieving the embolization
percutaneously is hard and dangerous. Surgical retrieval could be
selected and done with less risks and better results when failing or
hard to retrieve percutaneously. Techniques such as direct retrieval and
using two forceps to fold the device have been reported [4]. In this
case, we performed a safe procedure to retrieve the migrated device by
deploying from a sheath (Figure 3), which could minimize valve and
conduction system complications.