. Author manuscript; available in PMC: 2017 Dec 22.

Published in final edited form as: JACC Cardiovasc Imaging. 2016 Dec 21;10(7):735–743. doi: 10.1016/j.jcmg.2016.08.014

Table 2. LA Phasic Function in Derivation Cohort.

	Grade 0 (n = 15)	Grade 1 (n = 19)	Grade 2 (n = 20)	Grade 3 (n = 18)
Reservoir, LA emptying fraction, %	131 ±58	125 ± 48	99 ± 66	89 ± 27
Conduit, LA passive emptying fraction, %	29 ± 15	26 ± 18	24 ± 12	21 ± 8^*
Booster, LA active emptying fraction, %	36 ± 9^†^§	39 ± 7	28 ± 13^‡^§	15 ± 8^*

Values are mean ± SD.

p < 0.05 for this group versus all other groups.

^†

p < 0.05 for this group versus group 1.

^‡

p < 0.05 for this group versus group 2.

^§

p < 0.05 for this group versus group 3.

LA = left atrial.