Perioperative medicine & outcomes

Impact of Intravenous Lidocaine, Dexmedetomidine, and Intrathecal Morphine on Metastasis-Related Biomarkers and Cellular Immune Profiles in Colorectal Surgery: A Prospective, Randomized Controlled Trial

Anesth AnalgPublished Randomised controlled trial

Authors' conclusion

Anesthetic adjuvants exerted differential effects on perioperative biomarkers and immune profiles relevant to tumor progression.

Study context

Population
Adults undergoing elective laparoscopic or robotic colorectal cancer resection109 completed and analysed
Participants
114 adults
Comparison
IV lidocaine vs dexmedetomidine vs intrathecal morphine
  • LIDOn = 38
  • DEXn = 34
  • Intrathecal morphine (ITM)n = 37
Primary endpoint
Plasma matrix metalloproteinase-9 (MMP-9) concentration
Follow-up
1 hour postoperatively
Methodological detailsprospective, patient- and assessor-blinded
  • Prospective
  • Patient- and assessor-blinded

Primary result

As reported in the abstract

MMP-9 · 1 hour
Difference on the log scale (95% CI)P value
LIDO vs DEX
0.333(0.0642–0.601)
P = 0.009
LIDO vs ITM
0.424(0.0248–0.823)
P = 0.033

Secondary outcomes

OutcomeDifference on the logit scale (95% CI)P value
CD73+CD8+ T cellsDEX vs LIDO0.669 (0.000987–1.34)P = 0.050
CD39−CD73−CD8+ T cellsDEX vs ITM−0.695 (−1.3 to −0.0908)P = 0.018
CD39−CD73−CD8+ T cellsDEX vs LIDO−0.645 (−1.24 to −0.05)P = 0.029

Dynamic pain scores

Lower with ITM than the other groups

Safety

Rescue antiemetic use less frequent with DEX
Other adverse events mild and comparable across groups

Original publication

Impact of Intravenous Lidocaine, Dexmedetomidine, and Intrathecal Morphine on Metastasis-Related Biomarkers and Cellular Immune Profiles in Colorectal Surgery: A Prospective, Randomized Controlled Trial. Anesth Analg. Published 2 June 2026. doi:10.1213/ane.0000000000007978

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