NCT07286786

Brief Summary

The goal of this observational study is to learn about effects of block strategies (sacral erector spinae plane block - ESP, caudal block) on perioperative pain in pediatric patients undergoing hypospadias surgery. The main question it aims to answer is: Is there a difference in analgesic efficacy between sacral erector spinae plane block and caudal block in pediatric patients undergoing hypospadias surgery? Eighty six pediatric patients (ages 1-7 years, ASA I-II) scheduled for hypospadias repair under general anesthesia were included in this prospective randomized study. Both blocks were performed using 0.25% bupivacaine, at doses of 0.5 mL/kg for our study. Pain was assessed using the FLACC scale at 1, 2, 4, 6, 12 and 24 hours postoperatively.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
86

participants targeted

Target at P50-P75 for all trials

Timeline
Completed

Started Jan 2025

Shorter than P25 for all trials

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

January 18, 2025

Completed
7 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

August 18, 2025

Completed
28 days until next milestone

Study Completion

Last participant's last visit for all outcomes

September 15, 2025

Completed
3 months until next milestone

First Submitted

Initial submission to the registry

December 3, 2025

Completed
13 days until next milestone

First Posted

Study publicly available on registry

December 16, 2025

Completed
Last Updated

January 7, 2026

Status Verified

October 1, 2025

Enrollment Period

7 months

First QC Date

December 3, 2025

Last Update Submit

January 5, 2026

Conditions

Outcome Measures

Primary Outcomes (1)

  • The pain status of patients in both groups will be evaluated with the FLACC score at postoperative 1, 2, 4, 6, 12 and 24 hours.

    FLACC: Face, Leg, Activity, Cry, Consolability. The FLACC score is an observational pain assessment tool used primarily in pediatric patients who are unable to communicate verbally. It evaluates pain based on five behavioral categories: 'Face, Legs, Activity, Cry, and Consolability', each scored from 0 to 2, resulting in a total score ranging from 0 to 10. A score of 0 indicates no pain, while 1-3 reflects mild pain, 4-6 moderate pain, and 7-10 severe pain. Higher FLACC scores represent poorer pain control and greater patient discomfort, whereas lower scores suggest effective analgesia and adequate patient comfort. Elevated FLACC scores are clinically significant, as they are associated with increased stress responses, agitation, fluctuations in cardiopulmonary parameters, delayed mobilization, and prolonged recovery in pediatric patients.

    It will be evaluated at 1, 2, 4, 6, 12 and 24 hours postoperatively.

Study Arms (2)

Group C (caudal block)

Group

Procedure: Caudal Block Anesthesia

Group S (sacral ESP block)

Cohort

Procedure: Erector Spinae Plane Block

Interventions

Caudal block, with its simple application system, high success rate (98-100%), and ability to provide reliable analgesia, is a first-line block method for pain control compared to other options, including peripheral blocks. It provides analgesic effects in the dermatomal region between T10 and S5. It is indicated for chronic back care in adults and for painful infraumbilical procedures such as pediatric circulation, hypospadias repair, circumcision, inguinal hernia repair, and anal atresia surgery. Although it is sometimes used as the sole anesthesia method in pediatric surgery, it is generally used in conjunction with general anesthesia. Congenital or therapeutic coagulation disorders should be excluded before application. Contraindications for caudal block in children include local vascular involvement, hairline cysts, and congenital spinal anomalies.

Group C (caudal block)

In this block, a local anesthetic agent is injected into the fascial plane of the superficial and deep erector spinae muscle at the distal end of the transverse process of the vertebra. The aim is to block the dorsal and ventral rami of the spinal nerves. This block occurs through four different mechanisms: direct action on nerves in the fascial plane, diffusion into the paravertebral space, systemic absorption, and perforation on nerves in nearby compartments. Because the erector spinae muscle extends along the vertebra, ESPB can be preferred for analgesia in the neck, chest, trunk, and lower and upper extremities. With a single-level block, the local anesthetic agent spreads approximately 3-6 vertebral levels in a cranio-caudal direction. This provides guidance on the level at which the block should be performed, depending on the surgical procedure.

Group S (sacral ESP block)

Eligibility Criteria

Age1 Year - 7 Years
Sexall
Age GroupsChild (0-17)
Sampling MethodProbability Sample
Study Population

The study included children with ASA I-II, who will undergo hypospadias surgery under general anesthesia, between 1 and 7 years of age, who have no contraindications for block application, and whose legal guardians agreed to participate in the study.

You may qualify if:

  • Children aged 1-7 years
  • Classified as ASA physical status I-II
  • Scheduled for primary hypospadias repair were enrolled

You may not qualify if:

  • Infection at the injection site
  • Coagulopathy
  • Spinal anomalies
  • Allergy to local anesthetics
  • Parental refusal.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Prof. Dr. Cemil Taşcıoğlu Şehir Hastanesi

Istanbul, Şişli, 34384, Turkey (Türkiye)

Location

MeSH Terms

Conditions

Hypospadias

Condition Hierarchy (Ancestors)

Urogenital AbnormalitiesFemale Urogenital DiseasesFemale Urogenital Diseases and Pregnancy ComplicationsUrogenital DiseasesPenile DiseasesGenital Diseases, MaleGenital DiseasesMale Urogenital DiseasesCongenital AbnormalitiesCongenital, Hereditary, and Neonatal Diseases and Abnormalities

Study Design

Study Type
observational
Observational Model
CASE CONTROL
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Residents in Anesthesiology

Study Record Dates

First Submitted

December 3, 2025

First Posted

December 16, 2025

Study Start

January 18, 2025

Primary Completion

August 18, 2025

Study Completion

September 15, 2025

Last Updated

January 7, 2026

Record last verified: 2025-10

Locations