Surgical Left Atrial Appendage Exclusion Does Not Impair Left Atrial Contraction Function: A Pilot Study
Table 2
Primary endpoints.
Parameter
LAAA group baseline
LAAA group follow-up
value within group
Non-LAAA group baseline
Non-LAAA group follow-up
value within group
Δ between groups
Parasternal LAD (mm)
43 ± 6
43 ± 4
0.53
42 ± 6
44 ± 5
0.30
0.16
LAEF (%)
37 ± 10
37 ± 12
0.92
40 ± 7
37 ± 12
0.64
0.72
LAVI (LAV/BSA)
42 ± 11
41 ± 12
0.74
36 ± 5
36 ± 9
0.77
0.53
Strain reservoir (%)
23.1 ± 7.6
17.1 ± 4.6
<
29.2 ± 7.3
23.6 ± 6.3
<
0.70
Strain conduit (%)
12.1 ± 4.9
8.2 ± 3.5
16.1 ± 6.0
11.6 ± 5.2
0.47
Strain contraction (%)
11.0 ± 5.0
8.2 ± 3.3
0.07
13.2 ± 4.8
12.1 ± 4.1
0.15
0.18
Strain rate reservoir (s−1)
0.92 ± 0.19
0.79 ± 0.19
1.15 ± 0.35
0.92 ± 0.31
0.29
Strain rate conduit (s−1)
−0.97 ± 0.29
−0.78 ± 0.35
0.11
−1.20 ± 0.45
−1.01 ± 0.35
0.053
0.94
Strain rate contraction (s−1)
−1.13 ± 0.44
−0.93 ± 0.36
0.09
−1.42 ± 0.46
−1.27 ± 0.41
0.11
0.72
BSA = body surface area, LA = left atrium, LAEF = left atrial ejection fraction, LAD = left atrial diameter, PVF = pulmonary vein flow, LAV = left atrial volume, LAVI = left atrial volume indexed, value ≤ 0.05.
