Diastolic Pressure Gradient€Predicts Outcome in€Patients With Heart Failure and€Preserved Ejection€Fraction

*Does not include myectomy associated with valve replacement, coronary artery bypass grafting, or resection of a subaortic membrane. †Within 30 days of the myectomy. ‡Includes 2 patients with prior alcohol septal ablation; with these 2 patients considered nonpure myectomies, the Mayo mortality rate would be only 0.15%. §Includes 19% of patients with mitral valve repair. kNewest myectomy center with operations performed over only 11 years with first procedure in 2004, whereas data for the other centers encompass 15 years. Letters J A C C V O L . 6 6 , N O . 1 1 , 2 0 1 5