Comparison of Ropivacaine-Poloxamer 407 Hydrogel and TAP Block for Postoperative Pain Management in Laparoscopic/Robotic Gastrectomy

Prospective Randomized Controlled Study of Ropivacaine-Poloxamer 407 Based Gel Application and TAP Block for Postoperative Pain Management Following Laparoscopic/Robotic Gastrectomy

This study aims to determine whether Ropivacaine-Poloxamer 407 hydrogel provides non-inferior pain control compared to TAP block for patients undergoing minimally invasive gastrectomy. The results will guide postoperative pain management practices and enhance recovery protocols for gastric cancer surgery.

Inclusion Criteria:

1. Patients with a histologically confirmed diagnosis of gastric adenocarcinoma prior to surgery.
2. Patients who have undergone a complete surgical resection (R0 resection).
3. Patients with an ASA (American Society of Anesthesiologists) score of 3 or below.
4. Patients aged 20 years or older.
5. Patients who have undergone laparoscopic or robotic gastrectomy

Exclusion Criteria:

1. Patients under 19 years of age.
2. Presence of ascites or peritoneal metastasis.
3. Patients who have undergone preoperative chemotherapy or radiotherapy.
4. Diagnosis of malignancies other than gastric cancer.
5. Uncontrolled diabetes, autoimmune diseases, hypertrophic scars, or keloid history affecting wound healing.
6. History of allergy or adverse reactions to Ropivacaine or other local anesthetics.
7. Pregnant women.
8. Patients with preoperative chronic pain conditions, including CRPS.
9. Patients with long-term preoperative use of opioid analgesics.
10. Patients with psychiatric disorders deemed likely to interfere with study participation.
11. Patients with severe liver disease, renal disease, or arrhythmia.