Abstract
We measured the serum concentration of lidocaine after transversus abdominis plane (TAP) block with 40 ml of 1% lidocaine in 12 patients under general anesthesia, using a fluorescence polarization immunoassay. The peak mean serum concentration of lidocaine occurred 30 min after the block (3.6 ± 0.7 μg·ml−1). The highest concentration of lidocaine (5.5 μg·ml−1) was recorded 15 min after the block. These results indicate that a TAP block can potentially cause systemic toxicity of a local anesthetic. The analgesic effect of the TAP block may partially depend on the rise in serum concentration of the local anesthetic.
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Kato, N., Fujiwara, Y., Harato, M. et al. Serum concentration of lidocaine after transversus abdominis plane block. J Anesth 23, 298–300 (2009). https://doi.org/10.1007/s00540-008-0721-4
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DOI: https://doi.org/10.1007/s00540-008-0721-4