Immunological effects of post-operative epidural analgesia versus oral opioids in VATS.

Introduction: Anaesthetic choices in cancer surgery, including the use of epidural analgesia, may affect immune function during the perioperative period and might play an important role in subsequent cancer spread and recurrence.
Methods: This was a prospective, randomised, controlled, double-blinded, single-centre study allocating patients scheduled for video-assisted thoracoscopic surgery (VATS) lobectomy to post-operative pain management using either thoracic epidural analgesia or oral morphine. We compared pre-, per-, and post-operative plasma levels of interleukin (IL)-6, IL-10, IL-12, and interferon (IFN)-γ using regression analysis, and conducted a two-year survival follow-up.
Results: A total of 66 patients were randomised. Fifty-six received the allocated treatment and were analysed. None of the investigated cytokines exhibited significant between-group differences in plasma concentrations when adjusted for the chosen covariates (p ≥ 0.204). A two-year follow-up showed no difference in survival between the two groups (p = 0.5).
Conclusion: Our study found no differences in the impact on the innate, non-specific immune system related to epidural analgesia for pain management in VATS.
Funding: The Danish Cancer Society (R150-A10139). Oberstinde Kirsten Jensa la Cours Mindelegat (JSP-25076). University of Southern Denmark, Region of Southern Denmark and Department of Anaesthesia and Intensive Care, Odense University Hospital.
Trial Registration: NCT02359175 (ClinicalTrials.gov).
(Published under Open Access CC-BY-NC-BD 4.0. https://creativecommons.org/licenses/by-nc-nd/4.0/.)