Estenose Mitral por Calcificação do Anel?

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].

https://www.escardio.org/Journals/E-Journal-of-Cardiology-Practice/Volume-16/Mitral-valve-stenosis-epidemiology-and-causes-in-elderly-patients

http://europepmc.org/article/med/25790617