Letter to the Editor: Toward immune-adaptive anesthesia: Rethinking dexmedetomidine beyond sedation in gastrointestinal cancer surgery

Abstract

This Letter builds on a recent trial by Zeng et al in the recent issue of the World Journal of Gastrointestinal Surgery. The trial demonstrated that perioperative dexmedetomidine (DEX) protects the vascular endothelium and enhances recovery after gastrointestinal cancer surgery. Although the original study focused on the preservation of the endothelial glycocalyx, we propose a broader interpretation. DEX exemplifies the emerging paradigm of immune-adaptive anesthesia by modulating the perioperative immune balance beyond sedation and analgesia by attenuating cytokine storms. Thereby, stabilizing the microcirculation and promoting systemic homeostasis. Consequently, anesthetic agents should be reframed as immunophysiological modulators rather than passive adjuncts to surgery. We advocate integrating anesthesia into enhanced recovery programs to reprogram the postoperative immune responses. Within this framework, anesthetic choice affects recovery, immune resilience, and the risk of complications. Future clinical trials should move beyond hemodynamic endpoints to include immune restoration profiles, cytokine kinetics, and patient-centered outcomes. Viewing anesthesia as immunoadaptive may unlock strategies to optimize recovery and reduce inflammation-driven complications during oncological surgery.

Key Words: Dexmedetomidine; Immune-adaptive anesthesia; Perioperative care; Gastrointestinal cancer surgery; Postoperative recovery

Core Tip: Anesthetic agents influence postoperative recovery far beyond sedation. This letter introduces the concept of immune-adaptive anesthesia, highlighting dexmedetomidine’s capacity to modulate perioperative immune balance and accelerate recovery after gastrointestinal cancer surgery. By integrating anesthetic immunomodulation with surgical precision and evidence-based nursing interventions-such as thermoregulation, stress control, and early mobilization-the perioperative team can collectively enhance immune resilience, reduce complications, and achieve more holistic, patient-centered recovery outcomes in oncologic surgery.

TO THE EDITOR

Perioperative management in gastrointestinal (GI) oncologic surgery has traditionally emphasized hemodynamic stability, adequate analgesia, and rapid emergence from anesthesia[1-3]. However, the biological impact of major surgery extends beyond the physiological endpoints. Surgical trauma triggers systemic inflammatory cascades, endothelial dysfunction, and immune dysregulation, collectively determining the quality of postoperative recovery. In this context, the anesthetic agent is no longer a passive pharmacological agent but a determinant of postoperative immune resilience[4].

A recent randomized controlled trial by Zeng et al[5], published in the World Journal of Gastrointestinal Surgery, demonstrated that perioperative dexmedetomidine (DEX) preserves endothelial integrity, attenuates inflammation, and improves recovery outcomes following GI cancer surgery. Although we focused on vascular endothelial glycocalyx protection, this study highlights anesthesia as a modifiable immunological intervention. Building on these findings, we propose the emerging concept of immune-adaptive anesthesia, an anesthetic paradigm that integrates immunophysiological modulation into perioperative care to optimize surgical recovery.

Immune-adaptive anesthesia: Reframing anesthesia as immune modulation

Traditional anesthetic philosophy views drugs as facilitators of surgical tolerance, inducing unconsciousness, analgesia, and immobility[6,7]. However, accumulating experimental and clinical evidence suggests that anesthetics also shape the immune trajectory during and after surgery. DEX, an α₂-adrenergic agonist, exemplifies this shift. Their ability to suppress sympathetic overactivation, reduce cytokine release and maintain microcirculatory homeostasis demonstrates that anesthetic agents can reprogram the body’s inflammatory and immune responses[8].

Immune-adaptive anesthesia recognizes perioperative immune perturbations as a therapeutic target, and not merely as a side effect. DEX’s attenuation of interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) responses highlights how anesthetic pharmacology intersects with immune recovery[9]. This intersection has practical consequences: Patients receiving DEX experience reduced postoperative infections, shorter hospital stays, and improved patient-reported recovery scores. These benefits align not only with sedation quality, but also with the restoration of immune equilibrium.

Immune-adaptive anesthesia proposes that anesthetic choice and timing should be guided not only by cardiovascular parameters or surgical duration, but also by each patient’s inflammatory status, baseline immune competence, and expected recovery trajectory. This shift supports the use of a precision medicine approach, tailoring perioperative anesthetic strategies to enhance immune resilience, minimize inflammatory injury, and accelerate recovery.

Perioperative integration: Bridging anesthesia, surgery, and nursing care

Translating immune-adaptive anesthesia into practice requires a coordinated perioperative ecosystem involving anesthesiologists, surgeons, and perioperative nursing teams. Each discipline contributes to maintaining immune stability and promoting recovery, with their collaboration amplifying the immunomodulatory benefits of anesthetic agents such as DEX.

Surgically, minimizing tissue trauma and optimizing intraoperative perfusion directly reduce the inflammatory burden that anesthetics must counter. From an anesthetic perspective, agents such as DEX modulate stress-induced catecholamine surges and stabilize hemodynamics while curbing cytokine storms[10]. However, the critical interface in perioperative nursing lies between these domains, and many immune-relevant interventions have been implemented.

Nurses play a key role in maintaining physiological conditions that support immune homeostasis[11,12].

Thermoregulation: Maintaining normothermia during surgery prevents hypothermia-induced immunosuppression and preserves the microcirculatory flow. Coordinated temperature management complements the stabilizing effects of DEX.

Stress control and comfort optimization: Early pain assessment and multimodal analgesia, including opioid-sparing strategies facilitated by DEX, reduce neuroendocrine stress. Thereby limiting postoperative inflammatory responses.

Fluid and oxygen management: Nursing-led monitoring of fluid balance, oxygen saturation, and tissue perfusion ensures that the metabolic environment is conducive to immune recovery.

Early mobilization and respiratory care: Early ambulation, deep breathing, and coughing exercises prevent pulmonary complications, boost immune competence, and complement DEX infection-reducing outcomes.

Nutritional and sleep support: Adequate perioperative nutrition and postoperative sleep optimization managed by nursing teams supports immune function and enhances overall recovery.

These interventions, which are often considered routine, have renewed significance within the adaptive immune system framework. When nursing care is synchronized with anesthetic immunomodulation, the perioperative team creates an immunoprotective environment. This represents a holistic evolution from “supportive care” to “immune-informed care”.

Translational implications and future directions

The trial by Zeng et al[5] underscores an important reality: The impact of anesthesia extends beyond the operating room and into the biological recovery landscape. Therefore, future perioperative research should adopt a multidimensional approach to recovery assessment by integrating immune, microcirculatory, and patient-centered endpoints.

First, immune monitoring should be part of perioperative outcome evaluation[13]. Monitoring cytokine kinetics (e.g., IL-6, TNF-α), lymphocyte subsets, and endothelial injury markers such as syndecan-1 can reveal how anesthetic strategies influence recovery trajectories. Second, enhanced recovery protocols should evolve from focusing purely on mobilization and pain control to incorporating immunological restoration[14]. This may involve the timing of anesthetic infusions to align with circadian immune rhythms, adjusting the sedation depth based on inflammatory markers, or developing predictive algorithms for immune recovery.

Third, educational and interdisciplinary training are essential[15]. Surgeons and nurses should understand that anesthetic choices influence immune recovery, and anesthesiologists should appreciate how surgical techniques and perioperative care influence systemic inflammation. The future of perioperative medicine lies in integrating these insights into a unified clinical model that prioritizes immune adaptation.

Finally, clinical trials should move beyond hemodynamic or pain metrics and incorporate immunological outcomes as co-primary endpoints. The use of DEX in oncological surgery provides a template for designing studies in which immune stability and recovery quality, rather than the sedation score alone, define anesthetic success.

Conclusion and future perspectives

Zeng et al[5] marked a critical step in redefining the role of anesthesia in surgical oncology. By demonstrating that DEX stabilizes hemodynamics and preserves endothelial and immune integrity, this study prompts a broader conceptual shift. Immune-adaptive anesthesia improves anesthetic management by modulating immune trajectories, reducing postoperative complications, and improving recovery quality.

Implementing this concept in perioperative protocols requires collaboration among the anesthesia, surgery, and nursing teams. Aligning anesthetic pharmacology with surgical precision and nursing-led physiological care creates an integrative recovery model that prioritizes immune restoration as the ultimate goal of surgery.

Future perioperative medicine should aim not just for “smooth emergence”, but for meaningful recovery-enabling patients to regain physiological balance, immune resilience, and functional independence safely and efficiently. Embracing immune-adaptive anesthesia allows the perioperative community to take decisive steps toward this goal.