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. Author manuscript; available in PMC: 2020 Apr 1.
Published in final edited form as: J Am Soc Echocardiogr. 2019 Apr;32(4):537–544.e3. doi: 10.1016/j.echo.2019.01.015

Table 5.

Fractional area change (FAC) ranges determined from control subjects.

Normal ≥ 34%
Mildly Diminished 29 – 33%
Moderately Diminished 24 – 28%
Severely Diminished < 24%