Dynamics of end expiratory lung volume after changing positive end-expiratory pressure in acute respiratory distress syndrome patients

Table 3 ΔEELV and V_AD at 1 and 2 minutes and ratio between 1 and 2 minutes during increase and decrease in PEEP

PEEP step (s)	ΔEELV at 1 min (ml)	ΔEELV total (ml)	ΔEELV at 1 min/ΔEELV total (%)	V_ADI at 1 min (ml)	V_ADI total (ml)	V_ADI at 1 min/V_ADI total (%)
Increase in PEEP
5–10	299±118	309±124	97±4	106±72	116±81	92±14
10–15	326±127	340±134	96±4	131±97	144±108	92±9
15–20	319±166	328±178	98±3	138±127	147±140	96±5
20–25	284±124	297±138	97±5	110±102	123±117	91±11
25–30	275±130	290±148	96±5	139±123	154±1140	92±11
30–35	196±82	211±93	94±6	68±68	82±76	81±25
35–40	183±77	203±102	90±8	72±71	89±98	50±35
Mean±SD	269±57	282±54	96±3	109±30	122±28	85±16
Decrease in PEEP
40–35	174±129	182±133	97±5	70±111	78±114	92±14
35–30	196±102	200±111	99±4	75±90	80±99	100±13
30–25	216±71	218±72	99±6	74±44	76±45	98±28
25–20	329±111	341±120	97±4	160±110	172±119	95±7
20–15	363±152	384±174	96±6	160±115	181±140	91±12
15–10	358±108	363±111	99±3	126±69	131±71	96±8
10–5	373±175	384±177	97±6	150±114	158±122	89±23
Mean±SD	287±88	296±92	98±1	117±42	125±47	94±4

Abbreviations: EELV end-expiratory lung volume, V_ADD additional decreased volume, V_ADI additional increased volume

ISSN: 1364-8535