Review of Echocardiographic Findings in Patients with Obstructive Sleep Apnea

Table 4

Left ventricular diastolic function in relationship with OSA severity.

Echocardiographic variables		AHI <5 events·h^−1	Mild OSA	Moderate OSA	Severe OSA
E velocity (cm/s)	Dursunoglu et al. [9]		92 ± 12	77 ± 24	61 ± 13	0.01
A velocity (cm/s)	Dursunoglu et al. [9]		67 ± 25	105 ± 90	87 ± 14	0.01
	Vural et al. [17]	75.1 ± 20.9	78.3 ± 21.5	76.9 ± 13.8	86.2 ± 17.8^†	<0.05
E/A ratio	Dursunoglu et al. [9]		1.37 ± 0.02^†	0.73 ± 0.01^‡	0.70 ± 0.01^‡	0.01
	Imai et al. [13]		1.38 ± 0.45		1.03 ± 0.39	<0.0001
	Vural et al. [17]	1.0 ± 0.3	1.0 ± 0.3	1.0 ± 0.3	0.8 ± 0.2^†	<0.05
DecT (ms)	Altekin et al. [11]	1.19 ± 0.24	0.96 ± 0.16^†	1.01 ± 0.3	1.11 ± 0.28	0.009
	Altekin et al. [11]	163 ± 26.2	227.4 ± 31.1^†	216.4 ± 60.4^†	199.4 ± 39.5^†	<0.001
	Dursunoglu et al. [9]		170.1 ± 20.9	210.0 ± 47.7	240.1 ± 57.7	0.01
	Imai et al. [13]		187.1 ± 33.7		198.4 ± 36.6	0.003
	Vitarelli et al. [24]	143 ± 14	175 ± 17		229 ± 15^†	0.004
	Oliveira et al. [25]		189.2 ± 34.5	231.8 ± 45.2	247.6 ± 48.2^‡	<0.05
IVRT (ms)	Altekin et al. [11]	88.3 ± 12.5	106.3 ± 12.8^†	108.8 ± 12.9	113.2 ± 10.4^†	<0.001
	Vitarelli et al. [24]	74 ± 11	103 ± 9		125 ± 10^†	0.004
	Fung et al. [23]	92.7 ± 16.6			106.4 ± 19.1	0.005
	Dursunoglu et al. [9]		72.0 ± 12.6	100.2 ± 13.7^‡	125.5 ± 13.1^‡	0.01

DecT: deceleration time; IVRT: isovolumic relaxation time; AHI: apnea-hypopnea index; OSA: obstructive sleep apnea. ^†Significantly different from AHI <5 events·h⁻¹; ^‡significantly different from mild OSA.