Uncontrolled infection quite often leads to systemic inflammatory reac
tion syndrome (SIRS) and multiorgan dysfunction (MOD) syndrome. Thirty
-five consecutive patients (19 males) fulfilling strict diagnostic cri
teria for SIRS were enrolled in two multicenter prospective double-bli
nd trials involving new therapies for SIRS. The patients were followed
prospectively up to day 28 after the enrollment. In the 35 patients w
ith SIRS, males predominated in the age group below 40 (10/12, 83%) co
mpared to the older group (nine males out of 23, 39%). Out of 16 femal
es presenting with SIRS: only two were below the age of40. This distri
bution was statistically different than our general MICU population. T
he serum albumin in these patients was uniformly low, with a mean of 2
2.5 gm/L. The bulk of SIRS patients (22/35; 63%) went on to develop ac
ute renal failure (ARF). Although statistically not different, skin an
d peritoneal infections were more common in ARF group while pulmonary
infections in non-ARF group. The majority of blood-cultures grew gram-
positive organisms. Resolution of SIRS occurred within first 3 days in
greater number of non-ARF survivors than ARF survivors (6/9, 66.7% vs
. 6/16, 37.5%). Of the 22 ARF patients, 17 showed improvement in their
renal function; the five who did nor, died before day 28. The overall
mortality (about 32%) was similar in both groups. Patients who develo
ped both ARF and ARDS did not survive. In conclusion. SIRS occurs most
ly in elderly patients, almost always in patients with low albumin lev
els. Premenopausal women seem to be protected. Blood cultures isolated
a gram-positive organism in the majority of cases. Improvement in ser
um creatinine suggests good prognosis. The mortality in ARF and non-AR
F groups is similar.