Clinical Scorecard: Evaluating the Minimally Invasive Nature of Pure Single-Incision da Vinci SP Surgery for Right-Sided Colon Cancer: A Comparative Study with the da Vinci Xi System Utilizing PSM and IPTW

At a Glance

Key Highlights

• Pure single-incision da Vinci SP surgery performed without additional assistant ports represents a novel approach emphasizing minimal invasiveness.
• Postoperative pain (NRS) and CRP/Alb ratio used as objective indicators to evaluate surgical invasiveness and recovery.
• Propensity score matching and inverse probability of treatment weighting applied to minimize selection bias in comparing SP and Xi systems.

Guideline-Based Recommendations

Diagnosis

• Right-sided colon cancer diagnosis based on tumor location including appendiceal, cecal, ascending, and transverse colon cancers.
• Exclude patients with prior chemoradiotherapy, recurrent/multiple cancers, emergency surgery, or non-certified surgeons.

Management

• Perform ileocecal resection or right hemicolectomy using da Vinci SP or Xi robotic systems.
• Use a 3-cm umbilical incision for SP surgery without additional assistant ports.
• Employ intracorporeal medial-to-lateral dissection with ligation of ileocolic vessels and lymphadenectomy.
• Manage patients under standardized enhanced recovery after surgery (ERAS) protocols including scheduled acetaminophen and on-demand NSAIDs or opioids.

Monitoring & Follow-up

• Assess postoperative pain using Numerical Rating Scale (NRS) three times daily by trained nursing staff.
• Monitor postoperative inflammation and nutritional status using C-reactive protein/albumin (CRP/Alb) ratio.
• Classify postoperative complications according to Clavien–Dindo system, considering grade II or higher as clinically significant.

Risks

• Potential technical constraints related to instrument triangulation and learning curve effects with SP system.
• Limited availability of integrated energy devices and robotic staplers in SP system may require adaptation.
• Risk of intraoperative complications and conversion to laparotomy should be monitored.

Patient & Prescribing Data

Patients undergoing robotic-assisted surgery for right-sided colon cancer at a tertiary medical center.

Pure single-incision SP surgery without assistant ports may reduce postoperative pain and inflammation comparable to or better than Xi system, supporting its feasibility and safety.

Clinical Best Practices

• Ensure surgeons are certified and experienced with robotic colorectal surgery, having completed at least 20 Xi procedures before SP use.
• Apply propensity score matching and inverse probability of treatment weighting in retrospective analyses to reduce bias.
• Utilize standardized ERAS protocols to optimize postoperative recovery and pain management.
• Perform all SP procedures as solo surgeries through a single umbilical incision to maximize minimal invasiveness benefits.

References

• Colorectal cancer global statistics
• Robotic-assisted surgery advantages in colorectal cancer
• Comparative studies of da Vinci SP and Xi systems
• Systematic reviews on da Vinci SP system feasibility and safety
• Single-port robotic vs laparoscopic surgery for colon cancer
• Numerical Rating Scale for postoperative pain assessment
• CRP/Alb ratio as marker of postoperative inflammation and prognosis
• Clavien–Dindo classification of surgical complications
• Endoscopic Surgical Skill Qualification System of Japan Society for Endoscopic Surgery