Objective: To evaluate the prognosis of patients with septic shock adm
itted to an intensive care unit (ICU), according to their HIV serostat
us. Design: Retrospective study. Setting: Medical ICU of a university
hospital, Patients: 76 patients with septic shock. admitted to the sam
e ICU, of whom 28 were HIV positive and 48 were HIV negative, Measurem
ents and results: Severity scores, number and type of organ failures,
and survival rates were assessed in the two groups of patients. Glasgo
w Coma Scale and general severity scores [Acute Physiology and Chronic
Health Evaluation II and Simplified Acute Physiology Score (SAPS)I we
re significantly worse in HIV-infected patients. The total number of o
rgan failures was also higher in the HIV-positive group: 3.7 +/- 0.2 v
s 3.1 +/- 0.2 in the 21 (46 %) HIV-negative patients were dead compare
d to 26 (93 %) patients in the HIV-positive group (p < 0.001), In the
multivariate analysis, HIV infection was an independent risk factor fo
r mortality, as were the SAPS score, use of mechanical ventilation, an
d the McCabe score. Conclusions: This study reports a considerable exc
ess mortality in HIV-infected patients with septic shock. Although sev
erity of illness was clearly much more pronounced in HPV-positive pati
ents, retroviral infection was independently associated with death, Im
proving survival in HIV-positive patients with septic shock may requir
e earlier diagnosis and treatment of the causative infection.