The Relationship between Nocturnal Hypoxemia and Left Ventricular Ejection Fraction in Congestive Heart Failure Patients

Table 2

Correlation between the two variables of arterial oxygen saturation percentage and ejection fraction in study patients.

Arterial oxygen saturation percentage	Mild CHF (mean ± SD)	Moderate CHF (mean ± SD)	Severe CHF (mean ± SD)	𝑃 value
60–65%	0.17±0.41	0.11±0.25	0.34±0.65	0.16
65–70%	0.22±0.58	0.11±0.20	0.32±0.47	0.31
70–75%	0.68±1.75	1.73±6.51	0.81±1.13	0.42
75–80%	1.84±6.09	3.85±11.26	2.57±3.69	0.57
80–85%	3.90±8.11	7.23±12.17	5.84±8.75	0.36
85–89%	12.77±15.52	14.02±16.67	16.04±18.40	0.65