Botulinum toxin infiltration for pain control after mastectomy and expander reconstruction

Annals of Surgery
Rakhshanda LayeequeV Suzanne Klimberg

Abstract

We hypothesized botulinum toxin (BT) infiltration of the chest wall musculature after mastectomy would create a prolonged inhibition of muscle spasm and postoperative pain, facilitating tissue expander reconstruction. An Institutional Review Board (IRB)-approved prospective study was conducted of all patients undergoing mastectomy with tissue expander placement during a 2-year period. Study patients versus controls had 100 units of diluted BT injected into the pectoralis major, serratus anterior, and rectus abdominis insertion. Pain was scored using a visual analog scale of 0 to 10. Wilcoxon rank sum test was used for continuous variables and the chi2 test for nominal level data to test for significance. Forty-eight patients were entered into the study; 22 (46%) with and 26 (54%) without BT infiltration. Groups were comparable in terms of age (55 +/- 11 years versus 52 +/- 10 years; P = 0.46), bilateral procedure (59% versus 61%; P = 0.86), tumor size (2 +/- 2 cm versus 2 +/- 3 cm; P = 0.4), expander size and volume (429 +/- 119 mL versus 510 +/- 138 mL; P = 0.5). The BT group did significantly better with pain postoperatively (score of 3 +/- 1 versus 7 +/- 2; P < 0.0001), during initial (score of 2 +/- 2 versus 6 +/- 3; P = 1....Continue Reading

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