Table 2.
Echocardiographic measurements of the left ventricle in patients with obstructive sleep apnea (OSA) syndrome.
| Patients with OSA | AHI 5–14/h | AHI 15–29/h | AHI ≥30/h | P |
|---|---|---|---|---|
|
| ||||
| No. of subjects | 7 | 13 | 20 | |
|
| ||||
| Thickness and diameters | ||||
| Left atrium (19–40 mm)a | 37.0 (5.1) | 36.2 (3.4) | 37.5 (4.1) | .619 |
| Interventricular septum thickness in diastole (6–11 mm)a | 9.8 (2.4) | 9.4 (1.3) | 11.6 (1.7) | .004 |
| Posterior left ventricular wall thickness in diastole (37–56 mm)a | 8.9 (2.0) | 9.9 (1.6) | 10.7 (1.7) | .033 |
| Left ventricular end-diastolic diameter (37–56 mm)a | 46.2 (4.7) | 46.7 (6.3) | 49.5 (4.2) | .278 |
| Left ventricular end-systolic diameter (19–40 mm)a | 28.7 (4.4) | 29.5(4.4) | 31.2 (3.4) | .383 |
|
| ||||
| Left ventricular mass | ||||
| Left ventricular massb | 187.6 (66.2) | 196.4 (35.2) | 260.9 (50.5) | .001 |
| Left ventricular mass indexb | 95.8 (28.6) | 94.6 (13.2) | 121.9 (21.1) | .020 |
Data are presented as mean (SD) or n. AHI: Apnea-hypopnea index
a
Normal values; <198 g in females, <294 g in males;
b
<110 g/m2 in females, <134 g/m2 in males.