Table 2.

Fecal organic acid concentrations and pH in patients with severe systemic inflammatory response syndrome (SIRS)

Organic acids	SIRS patients	Normal
Total organic acid	30.3 ± 20.3*	88.4 ± 21.2
Succinic acid	2.0 ± 2.5	0.9 ± 1.2
Lactic acid	3.8 ± 5.5	0.5 ± 0.3
Formic acid	1.7 ± 2.9	0.4 ± 0.3
Acetic acid	18.7 ± 15.9*	50.8 ± 13.1
Propionic acid	2.5 ± 4.6*	18.7 ± 6.8
Isobutyric acid	0.1 ± 0.5	1.1 ± 0.3
Butyric acid	0.9 ± 2.3*	16.6 ± 6.7
Isovaleric acid	0.5 ± 1.9	1.4 ± 0.7
Valeric acid	0.1 ± 0.7	0.6 ± 0.4
pH	7.4 ± 0.6*	6.6 ± 0.3

SD standard deviation

Organic acid (μ mol/g feces). Data as mean ± SD

* P < 0.05 versus normal