The speed of repairing blood Na + is 1.5 - 2.0 mmol / l / hour is safe - HypoCa++nemia: HypoCa++nemia leads to hypotension, unresponsive to vasopressors, supplement CaCl2; canxigluconate - Hyperkalemia K+: irrigating solution hypotonic can cause hemolysis and increased K + blood, increased blood K+ may be temporary, thanks to Na + - K+ATPaza pump so K+ returns to normal 6 hours after surgery; Treatment with diuretics, insulin + glucose - Increased Cl -: increased too high with acidosis disorder, corrected with natri bicarbonate or diuretic, hyperventilated - Hyperglycemia: when rising too high, it is necessary to treat with insulin - Treatment of increased ammonia: L-arginine use and prophylaxis with L-arginine infusion: dosage of 4 - 38 g. 1.3.