Comparison of Modified Perichondral Approach Thoracoabdominal Nerve Block and Transversus Abdominal Plane Block in Analgesia Management Following Caesarean Section Surgery

M-TAPA block will be performed to Group M-TAPA at the end of the surgery, using US (Vivid Q) while the patient is in the supine position After providing aseptic conditions, 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 in the sagittal plane where the midclavicular line intersects with the costal cartilage corresponding to the costochondral angle. Using the In Plane technique, the probe is gently pushed to visualize the lower part of the costochondral angle at the central level, advancing the block needle in the caudal-cranio direction, 5 ml of saline will be injected into the layer between the transverse abdominal muscle and the lower plane of the costal cartilage, and the block location will be confirmed. After the block location is confirmed, a total of 20 ml + 20 ml of 0.25% bupivacaine (total 40 ml for both sides) will be injected bilaterally

TAP block will be performed to Group TAP at the end of the surgery, using US (Vivid Q) while the patient is in the supine position. After providing aseptic conditions, 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. USG will be placed transversely on the mid-axillary line between the iliac crest and subcostal planes. Using the In Plane technique, the block needle will be advanced into the fascial plane between the internal oblique and transversus abdominis muscles and the location will be confirmed by administering 5 ml of saline. The block needle will be advanced into the fascial plane between the internal oblique and transversus abdominis muscles and the location will be confirmed by administering 5 ml of saline.and than 20 ml of 0.25% bupivacaine (total 40 ml for both sides) will be injected bilaterally