Non-lobar atelectasis generates inflammation and structural alveolar injury in the surrounding healthy tissue during mechanical ventilation

Table 1 Baseline arterial blood gases of the two mechanical ventilation and the control groups

	pH	pCO₂	pO₂	HCO₃	SatO₂	pO₂/FiO₂
VT20/ZEEP	7.41 (0.05)	43.7 (5.7)*	414 (180)*	28.5 (3.8)	99 (0.2)	414 (182)
VT10/PEEP3	7.18 (0.03)*	77.6 (15.3)*	215 (60)*	29.3 (4.3)	99 (1.4)	215 (60)*
Control group	7.36 (0.04)	54.3 (5)*	99 (8.9)*	30.7 (1.5)	97 (0.6)	473 (42)

VT20/ZEEP: tidal volume = 20 mL/kg and zero end-expiratory pressure (PEEP = 0 cmH₂O); VT10/PEEP3: tidal volume = 10 mL/kg and positive end-expiratory pressure = 3 cmH₂O. Data are expressed as mean (standard deviation). *P < 0.05. PaO₂/F_IO₂: ratio of partial pressure of arterial oxygen to the fraction of inspired oxygen.

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