Learning Curve for Robot-Assisted Gastrectomy in Gastric Cancer

Cumulative Summation Analysis of Learning Curve for Robot-Assisted Gastrectomy in Gastric Cancer

The investigators prospectively collected the clinical data of Da Vinci robot-assisted radical gastrectomy patients conducted by the same group of physicians from October 2017 to October 2018. The learning curve of the surgery was analyzed with the moving average method and the cumulative sum analysis (CUSUM). The short-term efficacy was then validated by comparing the perioperative and pathologic outcomes of patients in the two stages of the learning curve.

Inclusion Criteria:

• 1.Patients were 18-90 years old
• 2. Patients with a documented diagnosis of gastric adenocarcinoma
• 3. patients were scheduled to undergo minimally invasive gastric cancer surgery
• 4.patients with no preoperative evidence of serosal invasion or extraperigastric lymph node metastasis on preoperative computed tomography scans, upper endoscopy, and endoscopic ultrasound

Exclusion Criteria:

• 1. Patients with neoadjuvant treatment
• 2. Patients procedure concurrent with the gastrectomy
• 3.Patients with palliative surgery
• 4. Patients with the contraindications for general anesthesia
• 5. Patients were pregnant or mentally incompetent
• 6. Patients with serious systemic comorbidities, such as severe heart failure, respiratory failure, uncontrolled hypertension