Novel technique of abdominal wall nerve block for laparoscopic colostomy: Rectus sheath block with transperitoneal approach

Figure 2 Ultrasound images. A: The muscle layers; B: The Peti-needle™ positioned below the peritoneum, the notch was made by the needle tip (yellow arrow) before the needle was inserted via the peritoneum; C: Local analgesic was then administered into the correct layer. R: Rectus muscle; IP: Intraperitoneal space; SC: Subcutaneous tissue; I: Injectate.