Review of Echocardiographic Findings in Patients with Obstructive Sleep Apnea

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
LAVI (ml/m^2)	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 (cm^2)	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.