The impact of left ventricular geometry on left atrium phasic function in obstructive sleep apnea syndrome: a multimodal echocardiography investigation

Table 4 Left atrium phasic function in the four left ventricular geometric patterns

	NG (n = 110)	CR (n = 56)	CH (n = 32)	EH (n = 23)	P
Reservoir function
2DE-LA TotEF (%)	0.66 ± 0.04	0.64 ± 0.04	0.62 ± 0.09^a	0.63 ± 0.04	< 0.001
3DE-LA TotEF (%)	0.61 ± 0.07	0.61 ± 0.04	0.58 ± 0.05^ab	0.59 ± 0.03	0.009
2DE-LAS-S (%)	37.97 ± 2.74	37.20 ± 1.89	32.70 ± 1.93^ab	33.44 ± 2.53^ab	< 0.001
Conduit function
2DE-LA PassEF (%)	0.46 ± 0.05	0.44 ± 0.05	0.36 ± 0.04^ab	0.38 ± 0.04^ab	< 0.001
3DE-LA PassEF (%)	0.40 ± 0.08	0.39 ± 0.08	0.31 ± 0.06^ab	0.35 ± 0.07^a	< 0.001
2DE-LAS-E (%)	23.62 ± 3.36	22.52 ± 2.48	15.95 ± 3.16^ab	18.13 ± 3.37^ab	< 0.001
Pump function
2DE-LA ActEF (%)	0.37 ± 0.08	0.37 ± 0.08	0.41 ± 0.13	0.40 ± 0.05	0.098
3DE-LA ActEF (%)	0.35 ± 0.13	0.36 ± 0.10	0.42 ± 0.06^a	0.37 ± 0.06	0.011
2DE-LAS-A (%)	14.35 ± 2.06	14.68 ± 1.85	16.75 ± 1.89^ab	15.31 ± 1.98^c	< 0.001

LA TotEF: left atrium total emptying fraction; LA PassEF: left atrium passive emptying fraction; LA ActEF: left atrium active emptying fraction; LAS-S: left atrium strain during systole; LAS-E: left atrium strain during early diastole; LAS-A: left atrium strain during late diastole
^ap < 0.05 for normal geometry; ^bp < 0.05 for concentric remodeling; ^cp < 0.05 for concentric hypertrophy

ISSN: 1471-2261