It was reported the physician selected a 30mm gore cardioform septal occluder to close a long tunnel patent foramen ovale.During the beginning of left disc deployment, echocardiography showed the disc forming in the tunnel.The physician pushed the device forward with the left disc still partially formed.Pressure between the disc and septal tissue caused the delivery catheter to spring forward when it cleared the tunnel.The patient mentioned he felt something happen; the doctor removed the device and assessed the patient for pericardial effusion, but nothing was found.The device was flushed, advanced, and deployed again with good result.At this time, a pericardial effusion was noted and the patient became severely bradycardic.The physician locked the device and removed the delivery system, medications were administered, and an emergency pericardiocentesis was performed.Following pericardiocentesis, the patient stabilized.There were no additional complications reported following the pericardiocentesis.
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