Comparison of Comfort and Effectiveness of Total Face Mask and Oronasal Mask in Noninvasive Positive Pressure Ventilation in Patients with Acute Respiratory Failure: A Clinical Trial

Table 3

Paraclinical parameters at one, six, and 24 hours after initiation of treatment.

Efficacy	TFM	ONM		value
	N = 24	N = 24
		Para-clinical
		PH		0.249^††
0	7.31 ± 0.05		7.30 ± 0.07	0.885^†
1 h	7.34 ± 0.06		7.33 ± 0.07	0.881^†
6 h	7.34 ± 0.05		7.33 ± 0.06	0.598
24 h	7.36 ± 0.05		7.34 ± 0.04	0.266
		PCO2		0.840^††
0	85.41 ± 15.24		87.17 ± 18.68	0.723
1 h	72.11 ± 16.67		79.33 ± 16.22	0.139
6 h	70.11 ± 13.61		77.97 ± 11.83	0.040
24 h	70.39 ± 11.59		52.93 ± 30.19	0.137^†
		HCO3		0.392^††
0	42.11 ± 5.52		42.44 ± 6.76	0.852
1 h	39.71 ± 5.89		41.48 ± 8.00	0.523^†
6 h	37.55 ± 5.05		41.81 ± 6.41	0.015
24 h	39.86 ± 4.92		38.78 ± 6.75	0.541
		BE		0.906^††
0	11.29 ± 4.64		11.34 ± 6.06	0.977
1 h	12.23 ± 10.63		11.29 ± 6.85	0.932^†
6 h	8.71 ± 3.62		11.45 ± 6.03	0.067
24 h	10.67 ± 4.19		9.36 ± 5.95	0.392

^†Mann–Whitney U test; ^††repeated measures ANOVA.