Effects of contrast material on computed tomographic measurements of lung volumes in patients with acute lung injury

Table 1 Clinical and respiratory characteristics of the 14 patients with acute lung injury

Patient no	Age/sex	Cause of ALI	Lung morphology*	Outcome	SAPS II	LISS	PaO₂:FiO₂ (mmHg)
Group 1
1	67/M	BPN	LA	D	42	1.7	176
2	34/M	PC	PA	S	55	3.5	262
3	81/M	BPN	LA	D	44	1.7	292
4	54/M	BPN	PA	S	16	2.0	205
5	68/M	BPN	LA	S	27	1.7	132
6	67/M	BPN	LA	S	46	1.5	238
7	74/M	BPN	LA	D	64	1.66	164
Mean ± SD	64 ± 15				42 ± 16	2.0 ± 0.7	210 ± 57
Group 2
8	72/M	BPN	LA	S	79	1.5	250
9	49/M	PC	PA	S	22	2.3	250
10	22/M	BPN	LA	S	24	2	136
11	48/M	BPN	LA	D	49	2	139
12	41/M	BPN	LA	S	29	1.66	182
13	35/M	BPN	PA	D	74	2.75	150
14	69/M	BPN	LA	D	27	2.33	160
Mean ± SD	42 ± 18				43 ± 24	2.1 ± 0.4	181 ± 49

In group 1 computed tomgraphy (CT) sections were acquired before and 30 s after injection of contrast material, and in group 2 the CT sections were obtained before and 15 min after injection of contrast material. *The morphological CT pattern is classified into lobar (LA) and patchy (PA) CT attenuations, according to the definitions reported by Puybasset and coworkers [4]. BPN, ventilator associated bronchopneumonia; D, died; F, female; FiO₂, fractional inspired oxygen; LISS, Lung Injury Severity Score; M, male; PaO2, arterial oxygen tension; S, survived; SAPS II, Simplified Acute Physiological Score.

ISSN: 1364-8535