Hyperacute Valve Thrombosis After Transapical Transcatheter Aortic Valve Replacement in a Patient With Polycythemia Vera

An 86-year-old woman with polycythemia vera (high allele burden of JAK2 V617F mutation: 95.3%) was referred for pulmonary edema due to severe aortic valve stenosis and was scheduled for transapical transcatheter aortic valve replacement. Because hydroxyurea administration was interrupted because of