TAP Block vs External Oblique Plane Block for Laparoscopic Cholecystectomy Surgery

As soon as the surgical procedure is completed, TAPB will be applied before extubation. After aseptic conditions are ensured, the high-frequency linear US probe (11-12 MHz, Vivid Q) will be covered with a sterile sheath, and an 80 mm block needle (Braun 360°) will be used. The US probe will be placed at the level of the anterior axillary line between the 12th rib and the iliac crest, and the external oblique abdominal muscle, internal oblique abdominal muscle, and transverse abdominis muscle will be visualized. Then, using the in-plane technique, the needle will be advanced with the help of ultrasound until the needle tip reaches the space between the internal oblique and transversus abdominis muscles. After negative pressure aspiration, 5ml saline will be injected and the block location will be confirmed. Once the block location is confirmed, 20ml 0.25% bupivacaine (40ml total for each side) will be injected bilaterally.

As soon as the surgical procedure is completed, EOIB will be applied before extubation. After aseptic conditions are ensured, the high-frequency linear US probe (11-12 MHz, Vivid Q) will be covered with a sterile sheath in the supine position, and an 80 mm block needle (Braun 360°) will be used. The US probe will be placed on the 6th rib in the mid-axillary line, at the line between the anterior superior iliac spine and the umbilicus. Using the In-Plane technique, 5 ml of saline will be injected between, the external oblique muscle and the rib, and the block location will be confirmed. After confirming the block location, 20 ml 0.25% bupivacaine will be applied to the plane between 6.,7., and 8. ribs and the muscles. The same procedure will be applied to the other side (a total of 40 ml 0.25% bupivacaine).