Anatomy documented before and after surgery
A 2015 retrospective study included 77 myectomy patients: 50 had leaflet plication and 50 had papillary-muscle release. Echocardiographic follow-up averaged 9.5 months, with wide variation.
How to interpret this: The operations were performed in 2006–2012 at Mount Sinai/St. Luke’s–Roosevelt. They are historical team results associated with Swistel’s work, not current NYU case volume or a randomized comparison.

