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

-value ≤ 0.05.