In the caudal block group, after the induction of caudal block with investigations, 0.2% bupivacaine will be applied to the epidural space in a volume of 0.8 mL/kg and a maximum of 20 mL will be injected into the epidural space and the surgical incision will be made at the 15th minute.

In the penile block and IV fentanyl group, 1 µg/kg fentanyl will be administered by the investigations and 5 minutes later, penile block will be performed using 0.25% bupivacaine at a dose of 0.2 mL/kg.

In the caudal block group, after the induction of caudal block with investigations, 0.2% bupivacaine will be applied to the epidural space in a volume of 0.8 mL/kg and a maximum of 20 mL will be injected into the epidural space and the surgical incision will be made at the 15th minute. For participants after surgery, Pediatric Anesthesia Emergence Delirium (PAED), Face Leg Activity Cry Consolability (FLACC) scales will be recorded, and for parental satisfaction, the LIKERT scale will be used. In addition, the child's walking time, first urination time, and need for additional painkillers will be questioned and recorded.

The PAED scale will be used to assess post-anesthesia emergence agitation. This scale was defined in 2004 and is considered the standard for diagnosing emergence agitation.

The scale, consisting of five statements (from "child makes eye contact" to "child cannot be comforted") is rated from 1 to 4, with a maximum score of 20.

Patients are observed for each of the 5 symptoms of delirium. After an observation is completed, the clinician subjectively scores the severity of that delirium symptom using the Lickert scale ("not at all," "only a little," "quite a bit," "very much," and "extremely"). A total score of 10 or more may be consistent with delirium urgent.

As the score increases, a score of ≥10 points indicates 64% sensitivity and 86% specificity for delirium, while a score of >12 points provides 100% sensitivity and 94.5% specificity for the diagnosis of emergency delirium (ED).

The FLACC scale will be used to assess pain. Developed as a tool for evaluating postoperative pain in children, this scale is one of the most widely known and commonly recommended pain measurement scales.

Each category in the "FLACC" (Face, Legs, Activity, Cry, Consolability) pain assessment scale is evaluated between 0-2, Total score varies between 0 and 10.

A score of 0 indicates that the child is calm and relaxed, a score of 1-3 indicates that the child is mildly disturbed, a score of 4-6 indicates that the child is in moderate pain, a score of 7-10 indicates that the child is significantly disturbed, in pain, or both.