Trial reportCanadian journal of anaesthesia = Journal canadien d'anesthesie2021
The immunomodulatory effect of ketamine in colorectal cancer surgery: a randomized-controlled trial.
Trial report in Canadian journal of anaesthesia = Journal canadien d'anesthesie, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03273231 (The Effect of Ketamine on Immune Function and Prognosis in Patients Undergoing Colorectal Cancer Resection), which is not on this map. Cited by 29 papers, 2 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
The Effect of Ketamine on Immune Function and Prognosis in Patients Undergoing Colorectal Cancer Resection
Who cites it
29 citing papers in PubMed, 2 syntheses or guidelines pooled it, 39 citations in OpenAlex.
- Interventional factors influencing natural killer cell immunity in colorectal cancer: a systematic review.Cancer immunology, immunotherapy : CII · 2025Pooled it
- Efficacy and safety of perioperative application of ketamine on postoperative depression: A meta-analysis of randomized controlled studies.Molecular psychiatry · 2023Pooled it
- Trial
- Effects of anesthetic depth on perioperative T lymphocyte subsets in patients undergoing laparoscopic colorectal cancer surgery: a prospective, parallel-controlled randomized trial.BMC anesthesiology · 2023Trial
- Sedation as an Immunomodulator of Inflammatory Responses in the Lung-Brain Axis of ARDS.International journal of molecular sciences · 2026Review
- Esketamine/Ketamine: Dual-Action Mechanisms and Clinical Prospects beyond Anesthesia in Psychiatry, Immunology, and Oncology.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Review
- Anti-tumour effects of perioperative ketamine in lung cancer: a non-randomised, exploratory biomarker study.British journal of anaesthesia · 2025Article
- The effect of general versus spinal anesthesia on perioperative innate immune function in patients undergoing total hip arthroplasty.BMC anesthesiology · 2025Article
- Efficacy of intraoperative ketamine/esketamine in the prevention of postoperative delirium: a systematic review and meta-analysis.Therapeutic advances in psychopharmacology · 2025Article
- Effects of perioperative anesthetics on the postoperative prognosis of patients undergoing surgery for cervical cancer.Frontiers in pharmacology · 2025Review
- Impact of pediatric anesthesia management on cancer outcomes in children-a narrative review.Frontiers in oncology · 2025Review
- The impact of perioperative anesthesia management-induced immunosuppression on postoperative cancer recurrence and metastasis: a narrative review.Frontiers in oncology · 2025Review
- Effect of ketamine on cellular immunity and inflammation in patients who undergo laparoscopic colon cancer surgery: a retrospective study.Frontiers in pharmacology · 2025Article
- Anesthetic Approaches and Their Impact on Cancer Recurrence and Metastasis: A Comprehensive Review.Cancers · 2024Review
- The Role of Anesthetic Management in Lung Cancer Recurrence and Metastasis: A Comprehensive Review.Journal of clinical medicine · 2024Review
- Perioperative Ketamine and Cancer Recurrence: A Comprehensive Review.Journal of clinical medicine · 2024Review
- Anesthesia and cancer.Revista da Associacao Medica Brasileira (1992) · 2024Article
- Review
- Efficacy of intraoperative subanesthetic dose of ketamine/esketamine in preventing postoperative cognitive dysfunction: a systematic review and meta-analysis.Therapeutic advances in psychopharmacology · 2023Article
- Perioperative Pain Management and Cancer Outcomes: A Narrative Review.Journal of pain research · 2023Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 1 institution in 1 country.
Funding
Abstract
purposeKetamine's inhibitory action on the N-methyl-D-aspartate receptor and anti-inflammatory effects may provide beneficial immunomodulation in cancer surgery. We investigated the effect of subanesthetic-dose ketamine as an adjunct to desflurane anesthesia on natural killer (NK) cell activity and inflammation in patients undergoing colorectal cancer surgery.
methodsA total of 100 patients were randomly assigned to a control or ketamine group. The ketamine group received a bolus of 0.25 mg·kg
resultsThe NK cell activity was significantly decreased after surgery in both groups, but the change was not different between groups in the linear mixed model analysis (P = 0.47). Changes in IL-6, TNF-α, CRP, and carcinoembryonic antigen levels were not different between groups (P = 0.27, 0.69, 0.99, and 0.97, respectively). Cancer recurrence within 2 years after surgery was similar between groups (10% vs 8%, P = 0.62).
conclusionsIntraoperative low-dose ketamine administration did not convey any favourable impacts on overall postoperative NK cell activity, inflammatory responses, and prognosis in colorectal cancer surgery patients.
trial registrationwww.clinicaltrial.gov (NCT03273231); registered 6 September 2017.
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What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.