In this study, we aimed to compare ultrasound-guided sacral erector spinae plane block and dorsal penile block on postoperative analgesic effect in hypospadias surgery.

ASAI-II, 1-9 years old patients with hypospadias diagnosis and operated in Kahramanmaraş Sütçü İmam University hospital and Kocaeli University hospital were randomized with closed envelope technique and divided into two groups as penile block or erector spinae plane block. Erector spinae plane block or penile block application (by Gözen Öksüz, Can Aksu) will be performed after the patients give standard general anesthesia and a laryngeal mask is applied. Vital signs such as pulse, sp02, blood pressure will be monitored before, during and at the end of the operation. At the end of the operation and after the patient is awakened 5. min., 30 min. 1., 2., 4., 6., 12., 24. hourly FLACC pain scores, number of analgesic use within 24 hours, patient family satisfaction (1: dissatisfied, 2: satisfied, 3: very satisfied), complication rates will be recorded.

Inclusion Criteria:

• American Society of Anesthesiology Classification (ASA) I-II, 1-9 years aged patients patients who scheuled elective hypospadias surgery in Kahramanmaraş Sütçü İmam University Hospital and Kocaeli University Hospital

Exclusion Criteria:

• American Society of Anesthesiology Classification (ASA) III-IV, patients with coagulopathy patients with infection at the injection site