RESULTS	Blood lactate levels were significantly lower and blood bicarbonate levels were significantly higher in patients treated with RF-bic than in those treated with RF-lac ( lactate , 17.4 + / - 8.5 vs. 28.7 + / - 10.4 mg/dL , P < 0.05 ; bicarbonate , 23.7 + / - 0.4 vs. 21.8 + / - 0.5 mmol/L , P < 0.01 ) .\