Preemptive Analgesic Effects of Rectus Sheath Block in Laparoscopic Cholecystectomy Patients

The Effectiveness of Preemptive Effect of Rectus Sheath Block and Intercostal Block on Postoperative Visceral Pain in Laparoscopic Cholecystectomy

The purpose of this study was to investigate the effectiveness of preemptive effect of rectus sheath block (RSB) and intercostal nerve block (ICNB) on postoperative visceral pain in laparoscopic cholecystectomy (LLC).

After induction of general anesthesia, group of patient is decided randomly. In Group pre, RSB and ICNB are performed with 0.25% Ropivacaine 40ml before the operation. In Group post, RSB and ICNB are performed with 0.25% Ropivacaine 40ml after the operation.

Measure the NRS and compare the rescue analgesic dose used at 0, 0.5, 1, 2, 6, 9, 18, and 24 hours after arrival at the recovery room.

Inclusion Criteria:

1. adults between the ages of 20 and 80
2. scheduled laparoscopic cholecystectomy patient
3. ASA class 1 or 2
4. Patients who have voluntarily agreed in writing to participate in the trial

Exclusion Criteria:

1. Patient with side effects on local anesthetics or steroids
2. Patient who are taboo of peripheral nerve block such as blood clotting disorder, infection, etc.
3. Patients with uncontrolled medical or psychiatric problem
4. Patient does not agree to participate in the study
5. Patients who are pregnant or lactating
6. Patients whose visceral pain is expected to be too severe
7. Patients receiving a single laparoscopic cholecystectomy (including using a robot)