The Utility of 3D Left Atrial Volume and Mitral Flow Velocities as Guides for Acute Volume Resuscitation
Table 1
Average values for left atrial volume and mitral flow measurements.
Study point
Baseline
EBV-5%
EBV-10%
EBV-15%
Hemodilution to −10%
Hemodilution to −5%
Restored EBV
LAEDV (cm3)
47 ± 13.7
48 ± 15.5
44 ± 16.6*
43 ± 15.4
49 ± 17.0
52 ± 15.3
55 ± 19.2*
Peak E (s)
0.61 ± 0.146
0.57 ± 0.142*
0.54 ± 0.115*
0.53 ± 0.155
0.64 ± 0.153
0.66 ± 0.185
0.72 ± 0.156*
Peak A (s)
0.48 ± 0.163
0.43 ± 0.138
0.42 ± 0.146
0.44 ± 0.148
0.47 ± 0.138
0.47 ± 0.141
0.53 ± 0.191
E/A ratio
1.3 ± 0.33
1.4 ± 0.39
1.4 ± 0.44
1.3 ± 0.44
1.3 ± 0.38
1.4 ± 0.38
1.4 ± 0.43
E decel (ms)
152 ± 60.9
165 ± 60.2
180 ± 72.0
150 ± 58.8
167 ± 60.6
168 ± 50.9
160 ± 50.8
A decel (ms)
114 ± 46.6
124 ± 51.5
114 ± 46.4
113 ± 38.5
133 ± 60.0
120 ± 49.0
115 ± 31.3
E VTI (cm)
0.12 ± 0.106
0.10 ± 0.035
0.11 ± 0.091
0.11 ± 0.129
0.11 ± 0.034
0.12 ± 0.035
0.12 ± 0.038
A VTI (cm)
0.06 ± 0.026
0.06 ± 0.028
0.08 ± 0.126
0.06 ± 0.026
0.07 ± 0.041
0.07 ± 0.039
0.07 ± 0.030
All values are mean ± SD. * < 0.05 versus baseline. LAEDV: left atrial end-diastolic volume, Peak E: peak E wave velocity, Peak A: peak A wave velocity, E decel: E wave deceleration time, A decel: A wave deceleration time, E VTI: E wave velocity time integral, and A VTI: A wave velocity time integral.
