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[Dynamics of lipid peroxidation and antioxidant system in patients with severe combined trauma].

The objective of the study was to determine the influence of blood loss volume on lipid peroxidation (LP) process and antioxidant system (AOS) state in the patients with a heavy combined trauma. The studies were proceeded in 36 patients with a heavy combined trauma. The mean age of the patients was 40 +/- 2. A craniocerebral trauma was associated with trauma of both thorax and abdominal cavities and locomotor system. Blood loss reached 75% of circulating blood volume (CBV), mean value was 28 +/- 3%. Blood samples for the studies were obtained at admission of the patients by emergency medical service teams, and--after 4; 24 hours, 3 and 7 days after the trauma. CBV determination was made by dradioisotope method. LP and AOS state was judged from serum level of primary (conjugated dienes), secondary (malonic dialdehyde, MDA) LP products and extracellular antioxidant enzyme ceruloplasmin (CP). K coefficient, an integral indicator was used for LP-AOS system imbalance assessment. According to the obtained data, in the studied patients intensification of the LP processes manifesting in CD and MDA contents increase was most expressed from 1 to 3 days after trauma (2.0-2.6-fold, p < 0.05) and rise of TP content maximally in the 3 day 2.28-fold (p < 0.05) was observed in the there patients. At the admission of decrease (1.6-fold, p < 0.05) was registered which normalized to the 3 day. K coefficient time course study permitted to establish that as early as at the admission of the patients into the clinic its value was substantially higher than the normal one, and to the 4 hour the imbalance in the LP-AOS system increased 5.0-fold (p < 0.05). An expression of LP processes and AOS disturbances in the patients with heavy combined trauma depended on the blood loss volume. The revealed imbalance in the LP-AOS system is indicative of a necessity of inclusion antioxidants into the complex therapy.