S-ESP and Ring Block in Circümcision Surgery (S-ESP: Sacral Erectör Spinae Plane Block).

Group S will be placed on their side. Asepsis is fifth in the transverse plane under antisepsis standards. high-frequency linear USG probe into the spinous process . The USG probe will be shifted caudally to visualize the first and second median sacral crest. The USG probe is then placed on the second medial It will be placed 3-4 cm lateral to the sacral apex and the mid-sacral apex will be imaged. On the USG screen, from top to bottom, erector spinae muscle, multifidus muscle and sacral intermediate The crest will be displayed. 0.25% bupivacaine will be administered in a total volume of 0.5ml/kg (maximum 20 cc ) by applying negative aspiration with the in-plane technique with a 50 mm Stimuplex A needle.

The patient is under general anesthesia. Before the surgical procedure begins, the pediatric surgeon administers 0.5ml/kg (maximum 20cc) 0.25% bupivacaine to the base of the root of the penis with a 25-gauge needle at 3, 6, 9, and 12 o'clock.