Table 6. Examples of non-standardized echocardiographic reporting that are not identified or extracted by EchoInfer.

Examples: EchoInfer Failed to Extract	Reason
The ..velocity across the AV bioprosthesis has increased.. from 1.6 m/s--> 2.0 m/s	uncommon characters “-->”
A bioprosthetic valve ..is present in the aortic position. Maximum ..gradient of 24 mm Hg, mean 13 mm Hg	mean gradient phrase is missing
The .. forward flow across the bopprosthetic valve is 3.7 m/s with a mean .. gradient of 30 mm Hg	misspelling of bioprosthetic
across the aortic valve is increased with a mean gradient of [**12–02**] mmhg	uncommon characters around digits
ava 0.53 am2. (ava index is 0.3 cm2/m2) dimensionless index (tvi ratio) = 0.19	misspelling of dimension cm2
there is a well seated, ..well functioning stentless porcine aortic valve. There.. is no significant stenosis or regurgitation of the ..prosthesis	rare phrasing of aortic stenosis