The association of sleep disordered breathing with left ventricular remodeling in CAD patients: a cross-sectional study

Table 4 Basic echocardiographic measurements of the left ventricle in SA and non-SA patients

Variable	Non-SA AHI: <5 n = 472	SA AHI: ≥5 n = 300	t test, Mann–Whitney or χ² test	p for trend^a
Thickness and diameters
Left atrium, cm	3.8 ± 0.5	4.1 ± 2.2	<0.001	0.110
LVPWT, mm	11.1 ± 1.1	11.6 ± 1.1	<0.001	0.904
IVST, mm	11.2 ± 1.6	11.8 ± 1.7	<0.001	0.829
LVEDD, mm	50.3 ± 5.1	51.6 ± 5.6	0.003	0050
LVESD, mm	33.8 ± 6.1	34.7 ± 5.7	0.013	0.052
LVWT, mm	22.3 ± 2.4	23.4 ± 2.4	<0.001	0.829
RWT	0.45 ± 0.06	0.45 ± 0.06	0.149	0.232
LVH by wall thickness criteria, n (%)	151 (33.4)	138 (49.3)	<0.001	0.268
IVST ≥ 12 mm	126 (27.9)	118 (42.1)	<0.001	0.381
LVPWT ≥ 12 mm	79 (17.5)	89 (31.7)	<0.001	0.593
LV mass index ≥51 g/m^2.7, n (%)	333 (74.0)	241 (86.4)	<0.001	0.348
RWT > 42, n (%)	285 (63.3)	195 (69.9)	0.077	0.348
Concentric LVH, n (%)	214 (47.1)	168 (60.9)	0.001	0.438
Left ventricular mass
LVM g	256.4 ± 63.4	285.9 ± 68.5	<0.001	0.210
LVMI g/m²	128.7 ± 26.9	139.5 ± 29.4	<0.001	0.765
LVMI g/m^2.7	59.7 ± 13.9	66.1 ± 15.4	<0.001	0.550
LVEF, %	52.1 ± 8.4	50.4 ± 8.7	0.007	0.380
LVEF ≤ 45%, n (%)	95 (20.1)	80 (26.7)	0.034	0.135

Data are presented as mean ± SD or number of patients (%)
SD indicates standard deviation, SA sleep apnea, AHI apnea-hypopnea index, IVST interventricular septum thickness in diastole, LVPWT left ventricular posterior wall thickness in diastole, LVEDD left ventricular end-diastolic diameter, LVESD left ventricular end-systolic diameter, LVWT left ventricular wall thickness, RWT relative wall thickness, LVH left ventricular hypertrophy, LVM left ventricular mass, LVMI left ventricular mass index, LVEF LV ejection fraction
^aANOVA or χ² for SA severity groups, data not shown, non- SA patients were excluded from this analysis

ISSN: 1471-2261