How large is the lung recruitability in early acute respiratory distress syndrome: a prospective case series of patients monitored by computed tomography

Table 2 Gas exchange and mechanical ventilation data before and throughout the first week after MRS

	Before MRS	After MRS	Day 3	Day 5	Day 7
PaO ₂ /FiO ₂	125 ± 43	302 ± 102	339 ± 142	345 ± 110	350 ± 102
PaCO ₂ (mmHg)	48 ± 13	56 ± 16	52 ± 13	44 ± 10	42 ± 9
pH	7.26 ± 0.11	7.20 ± 0.12	7.26 ± 0.10	7.37 ± 0.09	7.41 ± 0.07
BE	-5.7 ± 6.0	-7.2 ± 5.4	-4.7 ± 5.2	-0.5 ± 5.1	1.7 ± 4.1
PEEP(cmH ₂ O)	11.7 ± 3.8	24.6 ± 2.9	23.1 ± 3.3	19.5 ± 4.3	17.2 ± 3.7
Pplat (cmH ₂ O)	26.7 ± 3.8	39.9 ± 4.3	37.2 ± 4.4	32.8 ± 6.8	29.7 ± 6.3
ΔP (cmH ₂ O)	15 ± 0	15.4 ± 3.4	14.1 ± 3.3	13.3 ± 4.6	12.3 ± 4.6
V _T (ml/kg)	-------	6.9 ± 1.4	7.2 ± 1.9	8.6 ± 1.8	8.8 ± 1.5
FiO ₂ (%)	100	45 ± 17	41 ± 18	35 ± 11	37 ± 16

ΔP, driving pressure; BE, base excess; FiO₂, oxygen inspiratory fraction; PEEP, positive airway expiratory pressure; Pplat, plateau inspiratory pressure; V_T, tidal volume. Data expressed as mean ± standard deviation

ISSN: 1364-8535