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It was reported that on (b)(6) 2026, a 35mm navitor vision valve was selected for implant using a large flexnav delivery system (ds).The patient has a prior medical history of cardiac amyloidosis but no arrhythmias.The patient's aortic valve was measured to be 47 degrees.The length of the membranous septum was 6.8mm.There was calcification extending beneath the aortic annular plane in the interventricular septum.Pre-implant balloon aortic valvuloplasty (pre-bav) was performed by using a 25mm, non-abbott balloon.Following pre-bav, the patient was developed with a heart block.During the procedure, at 80 percent, the valve was placed at a depth of 3-4mm then the valve was able to be implanted.Post-implant, heart block progressed to a complete heart block, and the patient was observed with asystole requiring chest compressions.A temporary pacemaker was placed to stabilize the cardiac rhythm, and the patient was also intubated.Medications were administered to treat the condition; after 3 minutes of chest compressions, the patient regained pulse.Ds was removed from the patient's anatomy, but the valve was observed to have migrated upwards; no paravalvular leak (pvl) was observed, and gradient was measured to be 5mmhg.The patient had an extended hospitalization.The implanter believes the cause of migration to be due to the chest compressions.The patient's condition is unknown.
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