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Systemic Immune-Inflammatory Index For Evaluating Robotic and Laparoscopic Proximal Gastrectomy in Upper Gastric
Jingjing Dai1, Junping Bai2, Zihao Gao3
1Department of Medical Laboratory, The Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University.
Journal of Visualized Experiments : Jove
|June 29, 2026
Summary
The systemic immune-inflammatory index (SII) shows lower inflammation and better recovery after robotic surgery compared to laparoscopic surgery for gastrointestinal tumors. SII may help evaluate recovery post-minimally invasive gastric cancer surgery.
Area of Science:
- Surgical Oncology
- Inflammation Biomarkers
- Minimally Invasive Surgery
Background:
- Tumor resection is a key clinical treatment.
- Robotic-assisted surgery is increasingly used in procedures.
- Effective indicators for surgical efficacy and prognosis are limited.
Purpose of the Study:
- To introduce the systemic immune-inflammatory index (SII) as an indicator.
- To evaluate perioperative inflammatory responses and recovery.
- To compare robotic vs. conventional laparoscopic gastrointestinal tumor resection.
Main Methods:
- Included 81 patients for robotic and 81 for laparoscopic gastrointestinal tumor resection.
- Calculated SII using: platelet count × (neutrophil count/lymphocyte count).
- Monitored SII, neutrophil-to-lymphocyte ratio (NLR), and platelet-to-lymphocyte ratio (PLR) postoperatively.
Main Results:
- Postoperative SII and NLR were significantly lower in the robotic group from day 3 onwards (P < 0.05).
- Platelet-to-lymphocyte ratio (PLR) was lower in the robotic group only on postoperative day 3 (P < 0.05).
- Robotic surgery patients showed earlier ambulation, feeding, and shorter hospital stays.
Conclusions:
- SII is a potentially useful indicator for postoperative inflammatory status.
- SII aids in evaluating perioperative recovery after minimally invasive gastric cancer surgery.
- Robotic surgery may offer advantages in reducing inflammation and improving recovery.
