Boston scientific received information that during an upgrade procedure this guide catheter was advanced into the vein, and when it was attempted to pass the guide wire though it was not possible to track down the target vein.Contrast was injected, but the target vein did not fill thus a dissection was suspected.The guide catheter was then moved to another smaller vein, but was unsuccessful when advancing.Another vein was then attempted to be engaged with the guide catheter, and after probing at the origin, the guide wire appeared to have suddenly advanced in the direction of the target vessel.It was however evident that the wire was not following the vessel path obtained in the initial venogram, and contrast confirmed a perforation of the coronary sinus.The procedure was then ended.The patient remained hemodynamically stable with minimal pericardial effusion while the existing device was put back into pocket.No additional adverse patient effects were reported.
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