Correlation between severity of pulmonary embolism and obstructive sleep apnea using computed tomography pulmonary artery obstruction index and right ventricular to left ventricular diameter ratio as severity indices

Egyptian Journal of Radiology and Nuclear Medicine

Table 2 Baseline polysomnographic parameters

	PAOI < 15% (n = 36)	PAOI 15–50% (n = 48)	PAOI > 50% (n = 54)	P1	P2	P3
ESS scale	9.2 ± 1.2	9.3 ± 2.4	11.3 ± 3.1	0.342	0.001	0.001
Snoring, n%	12(33.3%)	15(31.2%)	30(55.6%)	0.432	0.002	0.000
Excess daytime sleepiness, n%	9(25%)	12(25%)	21(38.9%)	0.761	0.001	0.001
AHI	10.9 ± 2.5	15.2 ± 3.8	25.6 ± 2.3	0.002	0.000	0.000
Obstructive index: (n/h)	5.6 ± 3.04	6.37 ± 4.5	8.6 ± 8.2	0.629	0.341	0.241
Hypopnea index: (n/h)	4.45 ± 1.8	5.04 ± 1.3	7.09 ± 1.9	0.324	0.001	0.001
Desaturation index: (n/h)	5.39 ± 3.4	9.2 ± 3.40	15.1 ± 3.8	0.006	0.000	0.000
Minimum SaO₂%	69.5 ± 5.08	66.6 ± 4.8	65.2 ± 5.06	0.139	0.415	0.031
T 90%, min	4.37 ± 3.3	8.7 ± 4.6	13.1 ± 6.2	0.011	0.027	0.000

Values expressed as mean ± SD. * = significant difference. ESS = Epworth Sleepiness Scale
AHI = apnea hypopnea index n/h sleep; Min. SaO₂% = minimum arterial oxygen saturation, and Sa O₂ < 90% min = time in bed with oxygen saturation < 90% in minutes