Echocardiographic data of the study population and comparison of these data between the two groups according to sleep apnea syndrome severity
Parameter
SAS patients
Group A (n = 22)
Group B (n = 49)
p-value*
End-diastolic diameter of left ventricular (mm)
59 ± 8
61 ± 8
58 ± 8
0.432
Indexed left ventricular mass (g/m²), Me (25%; 75%)
111 (89; 134)
126 (108; 136)
110 (90; 130)
0.252
Left ventricular ejection fraction (%), Me (25%; 75%)
38 (33; 52)
37 (25; 56)
39 (34; 50)
0.645
Global longitudinal strain (%)
–12.8 ± 5
–12.8 ± 5
–13.03 ± 4.52
0.126
Indexed left atrial volume (mL/m²), Me (25%; 75%)
44 (36; 58)
47 (36; 56)
44.6 (35; 58)
0.610
E wave velocity (cm/s)
72 ± 17
74 ± 14
71 ± 19
0.452
A wave velocity (cm/s)
46 ± 20
64 ± 26
64 ± 28
0.928
E/A ratio, Me (25%; 75%)
1.2 (0.7; 1.8)
1.3 (0.7; 2.1)
1.1 (0.7; 1.6)
0.300
Mean E/e’ ratio, Me (25%; 75%)
11 (8.5; 15)
13 (9; 14)
10 (7.6; 15)
0.398
Systolic pulmonary arterial pressure (mmHg)
43 ± 16
46 ± 18
41 ± 14
0.125
Right ventricular diameter (mm), Me (25%; 75%)
37 (33; 43)
38 (31; 43)
36 (34; 40)
0.649
Tricuspid annular plane systolic excursion (mm), Me (25%; 75%)
20 (16; 22)
18 (15; 21)
20 (17; 22)
0.434
Right ventricular fractional area change (%), Me (25%; 75%)
44 (34; 49)
37 (28; 44)
45 (39; 49)
0.005
S’ velocity of right ventricular (cm/s)
10.7 ± 2
10 ± 2
11 ± 2
0.124
Right ventricular free wall longitudinal strain (%), Me (25%; 75%)
–20 (–21; –17)
–16 (–20; –10)
–20 (–22; –19)
0.008
Right ventricular Tei index, Me (25%; 75%)
0.48 (0.42; 0.56)
0.51 (0.47; 0.59)
0.44 (0.40; 0.63)
0.012
Right atrial surface (cm²), Me (25%; 75%)
17 (15; 22)
18.7 (16; 25)
17 (14; 21)
0.027
Significance level at p-value < 0.05; * comparison between Group A and Group B; Me (LQ; UQ): data presented as median with lower and upper quartiles
Declarations
Author contributions
S Antit: Conceptualization, Investigation, Methodology. FY: Investigation, Writing—original draft, Writing—review & editing. ML: Writing—original draft, Formal analysis. AB and S Abdellatif: Data curation. MRC: Supervision, Validation. LZ: Validation, Visualization. All authors read and approved the submitted version.
Conflicts of interest
The authors declare that they have no conflicts of interest.
Ethical approval
The study was approved by the Ethics Committee of the Internal Security Forces Hospital (Ethical approval number: 27/24).
Consent to participate
Informed consent to participate in the study was obtained from all participants.
Consent to publication
Not applicable.
Availability of data and materials
The raw data supporting the conclusions of this manuscript will be made available by the authors, without undue reservation, to any qualified researcher.
Open Exploration maintains a neutral stance on jurisdictional claims in published institutional affiliations and maps. All opinions expressed in this article are the personal views of the author(s) and do not represent the stance of the editorial team or the publisher.
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