Document Classification

Section Type: METHODS

Text: Sixty patients were randomly assigned to four groups in a double blind, prospective fashion, and received 5. 125 ml mixtures as follows : 2. 5 ml lignocaine 2 %, 2. 5 ml bupivacaine 0. 5 % and 0. 125 ml isotonic saline (group LB) ; 2. 5 ml lignocaine 2 %, 2. 5 ml bupivacaine 0. 5 %, 15 IU hyaluronidase/ml and 0. 125 ml isotonic saline (group LBH) ; 2. 5 ml lignocaine 2 %, 2. 5 ml bupivacaine 0. 5 % and 0. 125 ml sodium bicarbonate 8. 4 % (group LBpH) ; and 2. 5 ml lignocaine 2 %, 2. 5 ml bupivacaine 0. 5 %, 15 IU hyaluronidase/ml and 0. 125 ml sodium bicarbonate 8. 4 % (group LBHpH).