Table 3. Bupivacaine Concentrations in the Chest Tube Drainage 4 h after Surgery and Serum Concentrations 24 and 48 h after Surgery in the Three Treatment Groups
Values are mean ± SD.
* Control group versus bupivacaine-0.5% group, P < 0.05.
† Bupivacaine, 0.25% group versus bupivacaine-0.5% group, P < 0.05.