
https://www.journal-of-cardiology.com/article/S0914-5087(15)00317-2/fulltext

https://echotalkblog.com/2020/09/24/assunto-bem-polemico-e-com-voce-minna/

Unfortunately, the data available on prognosis and progression of the disease are limited. In a small study of 254 patients, an increase of the transmitral gradient of 0.8±2.4 mmHg per year was calculated [22].