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Attempt to access right femoral vein was unsuccessful, left femoral vein and right femoral artery were accessed instead. Guidewire into atrial sheath advanced to ascending aorta, blood gas obtained in ASAO and pullback pressure from ASAO and DSAO. Aortogram performed in proximal descending aorta. Measurements of PDA obtained and decision to close with Amplatzer Ductal Occluder-II. Guidewire placed in venous sheath, advanced across ductus, catheter exchanged over wire and Occluder advanced through delivery catheter until tip of device was at tip of sheath. Aortic disc exposed and pulled back against aortic ampulla. Rest of device then exposed so central pug was contained within PDA, proximal disc against PDA-PA junction. Small residual shunt with good device position. Device released and PA disc reoriented. Pressure obtained from LPA and MPA, significant gradient was found, decided to remove device. 5 mm Snare was inserted but device couldn't be pulled. Changed to 10 mm Snare and device was removed through the sheath.