The Egyptian Journal of Bronchology

Table 3 Comparison between two studied groups regarding blood gases and D-dimer

From: Early application of continuous positive airway pressure in COVID-19 patients at risk of obstructive sleep apnea

			Non-CPAP (n = 40)	CPAP (n = 40)	p-value
First day	Blood gases	PH	7.44 ± 0.13	7.42 ± 0.03	0.5
		CO₂	35.75 ± 6.17	38.75 ± 4.75	0.017
		HCO₃	23.99 ± 3.58	26.29 ± 2.09	0.001
	D-dimer		0.77 ± 0.48	1.27 ± 1.03	0.001
7th day	Blood gases	PH	7.39 ± 0.07	7.40 ± 0.03	0.29
		CO₂	40.80 ± 6.68	39.15 ± 2.61	0.15
		HCO₃	24.54 ± 3.59	25.60 ± 1.79	0.09
	D-dimer		1.44 ± 0.65	0.950 ± 0.52	0.001
			Non-CPAP (n = 28)	CPAP (n = 22)	p-value
14th day	Blood gases	PH	7.42 ± 0.06	7.39 ± 0.01	0.04
		CO₂	42.17 ± 9.15	37 ± 1.48	0.003
		HCO₃	27.25 ± 5.04	24.06 ± 1.27	0.001
	D-dimer		1.87 ± 0.71	0.419 ± 0.26	0.001

Data are presented as mean ± SD

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