In Group Q; The patient was placed in the lateral position with the side to be blocked on top. After providing skin antisepsis with 5% povidone iodine, sterile dressing was applied. After the USG probe was covered with a sterile sheath, it was placed transversely between the iliac crest and the costa edge. After imaging the external-internal oblique and transversus abdominis muscles, the probe was advanced posteriorly. Quadratus lumborum, Psoas Major and Erector Spina muscles were visualized. The needle was advanced towards the middle thoracolumbar fascia between the Quadratus lumborum muscle and the Erector Spina muscle with the in-plane technique, and the location was confirmed by injecting 1 ml of 0.9 saline. 0.25% Bupivacaine was injected at a dose of 0.5 mL/kg after negative aspiration.

In Group I; The patient was placed in the supine position. After providing skin antisepsis with 5% povidone iodine, sterile dressing was applied. After the USG probe was covered with a sterile sheath, it was placed on the anterior abdominal wall parallel to the imaginary line between the umbilicus and the anterior superior iliac wing. After imaging the external-internal oblique and transversus abdominis muscles, the ilioinguinal-iliohypogastric nerve was visualized as two small hypoechoic areas between the internal oblique muscle and the transversus abdominis muscle. The location was confirmed by injecting 1 ml of 0.9 saline by advancing the needle with the in-plane technique close to the nerve structures. 0.25% Bupivacaine was injected at a dose of 0.5 mL/kg after negative aspiration.

The patient was placed in the lateral position with the side to be blocked on top. After providing skin antisepsis with 5% povidone iodine, sterile dressing was applied. After the USG probe was covered with a sterile sheath, it was placed transversely between the iliac crest and the costa edge. After imaging the external-internal oblique and transversus abdominis muscles, the probe was advanced posteriorly. Quadratus lumborum, Psoas Major and Erector Spina muscles were visualized. The needle was advanced towards the middle thoracolumbar fascia between the Quadratus lumborum muscle and the Erector Spina muscle with the in-plane technique, and the location was confirmed by injecting 1 ml of 0.9 saline. 0.25% Bupivacaine was injected at a dose of 0.5 mL/kg after negative aspiration.

Face, Legs, Activity, Cry, Consolability (FLACC) Behavioral Pain Scale. FLACC is a behavioral pain assessment scale used for nonverbal or preverbal patients who are unable to self-report their level of pain. Pain is assessed through observation of 5 categories including face, legs, activity, cry, and consolability. The increase in the pain felt by the patient also increases the flacc score. Each category is scored on the 0-2 scale which results in a total score of 0-10.

the first postoperative systemic analgesic administration time

the frequency of systemic analgesic use in the first 24 hours postoperatively