Randomized, double-blind, placebo-controlled trial of granulocyte colony-stimulating factor in patients with septic shock

Dianne P Stephens, Jane H Thomas, Alisa Higgins, Michael Bailey, Nicholas M Anstey, Bart J Currie, Allen C Cheng
Critical Care Medicine 2008, 36 (2): 448-54

OBJECTIVE: To investigate the effect of early administration of granulocyte colony-stimulating factor (G-CSF) on hospital mortality in nonneutropenic patients with septic shock, excluding patients with melioidosis.

DESIGN: A randomized, placebo-controlled, double-blinded clinical trial.

SETTING AND PATIENTS: Adult patients with septic shock admitted to the Royal Darwin Hospital Intensive Care Unit.

INTERVENTIONS: Patients were randomized to receive G-CSF or placebo intravenously daily for 10 days, in addition to routine management of septic shock.

MEASUREMENTS: Primary outcome was hospital mortality. Secondary outcomes included intensive care unit mortality, intensive care unit and hospital length of stay, ventilator hours, and time to resolution of shock. Patient comorbidities, baseline and daily physiology, and organ function were collected.

RESULTS: Of 166 patients enrolled, 83 were allocated to receive G-CSF (81 included in analysis) and 83 were allocated to receive placebo. At baseline, 30% of patients had diabetes, 18% were known to have renal impairment or failure, and 38% had a history of hazardous alcohol use. The two groups had similar comorbidities at baseline and a similar severity of illness. The in-hospital mortality was 27% in the G-CSF group and 25% in the placebo group. Secondary end points were not different between groups. There was a higher rate of new organ failure in G-CSF-treated patients than placebo-treated patients (50% vs. 33%, p = .03), most of which was accounted for by new liver dysfunction (11% vs. 1%, p = .007). There was no significant difference in the proportion of patients with troponin I of >0.08 mg/L (78% vs. 66%, p = .09), and the prevalence of acute myocardial infarction (6% vs. 4%, p = .55) was not different during the study. The median peak troponin I level was higher in the G-CSF group (0.5 vs. 0.14 mg/L, p = .007), but baseline levels were not available.

CONCLUSION: G-CSF does not improve outcomes in patients with septic shock, excluding melioidosis. Increased hepatic dysfunction and higher peak troponin levels in patients receiving G-CSF have not been reported in previous clinical trials and warrant further investigation.

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