Clinical Study
Surgical Left Atrial Appendage Exclusion Does Not Impair Left Atrial Contraction Function: A Pilot Study
Table 1
Baseline characteristics.
| | Non-LAAA group () | LAAA group () |
value |
| Age, years | 54 ± 10 | 59 ± 8 | 0.07 | Male, (%) | 14 (88%) | 13 (81%) | 0.63 | Median AF history, years [range] | 3 1–10 | 4 1–15 | 0.15 | AF type | | | | Paroxysmal, (%) | 16 (100%) | 16 (100%) | | Previous catheter PVI, (%) | 0 (0%) | 1 (6%) | 0.31 | Catheter CTI ablation, (%) | 1 (6%) | 0 (0%) | 0.31 | CHA2DS2-VASC | | | 0.14 | 0, (%) | 7 (44%) | 6 (38%) | | 1, (%) | 7 (44%) | 2 (12%) | | 2, (%) | 2 (12%) | 8 (50%) | | Body mass index (kg/m²) | 28 ± 4 | 27 ± 3 | 0.47 | Body surface area (m²) | 2.15 ± 0.18 | 2.10 ± 0.23 | 0.47 | Hypertension, (%) | 4 (25%) | 7 (44%) | 0.26 | Diabetes, (%) | 0 (0%) | 1 (6%) | 0.31 | Stroke history, (%) | 0 (0%) | 2 (12%) | 0.14 | Systolic blood pressure (mmHg) | 124 ± 19 | 142 ± 14 | < | Diastolic blood pressure (mmHg) | 83 ± 18 | 82 ± 11 | 0.76 | Heart rate (beats/min) | 60 ± 9 | 64 ± 17 | 0.37 | Echocardiography | | | | LV ejection fraction (%) | 59 ± 5 | 60 ± 7 | 0.90 | LA ejection fraction (%) | 40 ± 7 | 37 ± 10 | 0.41 | LA diameter (mm) | 42 ± 6 | 43 ± 6 | 0.61 | LA volume (mL) | 75 ± 15 | 89 ± 30 | 0.11 | LA volume indexed (mL/m²) | 35 ± 5 | 42 ± 11 | 0.06 | LA strain measurements (%) | | | | Reservoir function |
29.2 ± 7.3 | 23.1 ± 7.6 | | Conduit function | 16.1 ± 6.0 | 12.1 ± 4.9 | | Contraction function | 13.2 ± 4.8 | 11.0 ± 5.0 | 0.22 | LA strain rate measurements (s−1) | | | | Reservoir function | 1.15 ± 0.35 | 0.92 ± 0.19 | | Conduit function | −1.20 ± 0.45 | −0.97 ± 0.29 | 0.09 | Contraction function | −1.42 ± 0.46 | −1.13 ± 0.44 | 0.08 |
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-value ≤ 0.05.
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