Blood plasma levels of medium-mass molecules (MMM), antioxidant activity (AOA), and malonic dialdehyde (MDA) were measured in 51 neurosurgical patients before and directly and 24 h after intravenous drip infusion of sodium hypochlorite (SHC) solution. Preliminary in vitro studies showed the most expressed drop of initially high MDA and MMM levels to be associated with an increase of AOA. It was observed at SHC concentration of 0.05 mg/ml, corresponding to infusion of SHC in a concentration of 600 mg/liter in 0.1 of the total circulating blood volume. Even a single dose of SHC alleviated endogenous intoxication and decreased the concentration of MMM and lipid peroxidation products. The proper AOA of the blood did not drop in this case, and in patients with initially low AOA it appreciably increased. Infusion of SHC normalized the values of Kp, which reflected its high detoxifying activity in endogenous poisoning caused mainly by inflammatory changes.
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