A covered stent used in aortic coarctation migrates proximally during deployment causing transverse arch obstruction: Transcatheter repositioning after one month

Transcatheter Correction of Superior Venacaval Form of Sinus Venosus Defects Using Balloon-Mounted Covered STENTS

Superior sinus venosus defects (SVD) are interatrial communications located above the confines of the oval fossa, where unroofing of the right upper pulmonary vein leads to its anomalous drainage to the superior venacava. Recent emergence of transcatheter closure of these defects using covered stents is an attractive alternative option especially in adults with additional comorbidities. This article focuses on various aspects of non-surgical closure of SVD, including patient selection, appropriate hardware options, step-by-step procedural details, evolution and modifications in the techniques over the last decade, protocols for follow-up evaluation, and potential complications associated with this intervention.

First-in-man use of an Indian-made balloon-expandable covered Zephyr stent and intermediate-term follow-up

Covered stent is used in large-vessel angioplasty in anticipation of vessel wall injury. Apart from aortic coarctation, they are also used in dysfunctional right ventricular outflow conduits and find a recent role in transcatheter sinus venosus defect closure. Different methods of covering stents include glue fixation, sutureless lamination, sandwich, and sintering lamination. Covered Zephyr (Sahajanand laser technology limited, Gandhinagar, India) is a new Indian-made expanded polytetrafluoroethylene-covered balloon expandable cobalt-chromium stent. Its unique C and S links prevent foreshortening. We report the first-in-man use of this new stent in severe discrete postsubclavian coarctation of aorta and its short-term follow-up imaging.

Transcatheter management of proximal stent migration in coarctation of the aorta

Proximal stent migration in setting of transcatheter management of coarctation of the aorta is a rare complication, which may require emergency surgery. Herein, we report a successful transcatheter management of proximal stent migration in a high surgical risk, a 14-year-old girl, which caused partial occlusion of both the descending aorta and the left subclavian artery.