Document Classification

Section Type: RESULTS

Text: Plasma levels of local anesthetics remained far below the toxic threshold of 0. 6 micro g/ml (Group R vs. B/S (median/minimum-maximum micro g/ml) : 24 h : 0. 05 / 0. 03-0. 24 vs. 0. 0 / 0. 0-0. 02 ; 48 h : 0. 06 / 0. 02-0. 15 vs. 0. 006 / 0. 0-0. 02 ; 72 h : 0. 05 / 0. 0-0. 11 vs. 0. 0 / 0. 0-0. 02 ; 96 h : 0. 02 / 0. 01-0. 32 vs. 0. 0 / 0. 0-0. 01).