2-4 Definitions for successful and failed therapies
Response to treatment was defined as the following criteria: (1)
“successful” as normalization of increased trans-prosthetic gradient
on echocardiographic examinations associated with a normal or an
acceptable leaflet motion by fluoroscopy in the absence of major adverse
events; (2) “partially successful” as a partial decrease in gradients
on echocardiography and a partial improvement in leaflet motion by
fluoroscopy; (3) “ineffective” as no improvement in Doppler indices on
echocardiography and leaflet mobility by fluoroscopy.