• Seda B Akinci, I Aydin Erden, Meral Kanbak, and Ulku Aypar.
• Department of Anesthesiology and Reanimation, Faculty of Medicine, Hacettepe University, Sihhiye 06100, Ankara, Turkey. sedabanu@hacettepe.edu.tr
• Saudi Med J. 2005 Apr 1;26(4):651-5.

ObjectiveTo investigate whether prolonged infusion of the oxygen free radical scavenger N-acetylcysteine (NAC) that is commenced immediately after admission to intensive care unit (ICU) could ameliorate the development or progression of multiple organ failure (MOF).MethodsAfter receiving ethical committee approval, a prospective randomized, double-blind, placebo controlled study was performed in the Anesthesiology and Reanimation Intensive Care Unit, Hacettepe University Hospital, Ankara, Turkey between December 2002 and May 2003. Twenty-six patients were randomized to receive either NAC in 5% dextrose 40 mg/kg/day or the same volume of 5% dextrose both in 4 divided doses. Two patients were withdrawn due to ICU stay <24 hours. Treatment effect on organ function was assessed by the sequential organ failure assessment (SOFA) scores according to physiological parameters of respiratory, hematological, hepatic, cardiovascular, central nervous system (CNS) and renal system scores that were obtained on admission, then daily. Chi-square, Mann Whitney U tests were used for statistical analysis.ResultsThere was no significant difference between the 2 groups in any of the 5 organ dysfunction parameters, total maximum SOFA, delta SOFA length of intensive care stay, days of mechanical ventilation and mortality. In the NAC treatment group, the maximum SOFA coagulation score was higher than the control group (p<0.05).ConclusionN-acetylcysteine (40 mg/kg/day) that was commenced immediately after admission to ICU did not ameliorate the progression of MOF in this small cohort of patients. We believe routine prophylactic use of low-dose NAC in all critically ill patients does not provide positive protection.

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