Table 1.
Left atrial volume and area in relationship with OSA severity.
| Echocardiographic variables | AHI <5 events·h−1 | Mild OSA | Moderate OSA | Severe OSA | p | |
|---|---|---|---|---|---|---|
| LAVI (ml/m2) | Altekin et al. [11, 14] | 21.6 ± 4.7 | 22.2 ± 4.8 | 27.44 ± 6.9† | 32.3 ± 5.1†,‡ | <0.03 |
| Varghese et al. [10] | 28.3 ± 4.1 | 30.6 ± 3.5 | 0.02 | |||
| Romero-Corral et al. [12] | 26.8 ± 11 | 32.5 ± 15† | 30.4 ± 11† | <0.05 | ||
| Imai et al. [13] | 20.3 ± 4.9 | 23.3 ± 5.2 | <0.0001 | |||
| LAA (cm2) | Hjälm et al. [8] | 21.6 ± 4.5 | 23.7 ± 5.5 | <0.001 | ||
LAVI: left atrial volume index; LAA: left atrial area; AHI: apnea-hypopnea index; OSA: obstructive sleep apnea; AHI: apnea-hypopnea index; OSA: obstructive sleep apnea. †Significantly different from AHI <5 events·h−1; ‡significantly different from mild OSA.