Respiratory Mechanics in Acute Respiratory Distress Syndrome: A Quality Improvement Based Registry Project

Intensive Care Medicine Experimental

Table 1 Epidemiology of respiratory mechanics (N = 50).

Variable	Values	Extreme	Unit
Pplat	25 (21-30)	13-37	cmH₂O
PEEPtot	12 (10-15)	5-19	cmH₂O
Vt/PBW	6.3 (6.0-6.7)	3.0-7.8	ml/kg
Pdriv	13 (9-16)	7-25	cmH₂O
Ers	30 (22-37)	16-74	cmH₂O/L
EL/Ers	74 (65-80)	48-92	%
PaO₂/FiO₂, low PEEP* PaO₂/FiO₂, high PEEP*	143 (103-190) 142 (118-200)	60-311 58-282	mmHg mmHg
Vder	120 (69-200)	0-426	ml

Values were described as medians [interquartile ranges], and the extreme was reported as minimum-maximum.
Pplat: plateau pressure; PEEPtot: total PEEP; Vt/PBW, tidal volume per predicted body weight; Pdriv: driving pressure of respiratory system; Ers: elastance of respiratory system; EL/Ers: the ratio of lung elastance to respiratory system elastance; Vder: derecruited volume.
* Assessment of oxygenation response by changing PEEP in 3-5 cmH₂O.