Comparison of the Efficacy of Bupivacaine with and Without Dexmedetomidine As an Adjuvant on Penile Block for Postoperative Pain Relief in Pediatrics Undergoing Hypospadias Repair Surgery

Phase 3

Not yet recruiting

• Conditions: Hypospadias Repair Surgery
• Interventions: Drug: Dexmedetomidine; Drug: Bupivacaine

• Registration Number: NCT06789393
• Lead Sponsor: Assiut University

Brief Summary

The main issue with pain management in children especially young children is the difficulty involved in evaluating it. When a patient's level of pain cannot be accurately assessed, effective analgesia cannot be prescribed. When children are not sufficiently treated for pain, stress hormones are released into their systems, resulting in increased catabolism, immunosuppression and hemodynamic instability .

Peripheral nerve blocks may be favored over neuroaxial blocks because they allow quicker mobilization after surgery.

Hypospadias results from abnormal development of the penis that leaves the urethral meatus proximal to its normal glanular position anywhere along the penile shaft, scrotum, or perineum. A spectrum of abnormalities, including ventral curvature of the penis (chordee), a hooded incomplete prepuce, and an abortive corpora spongiosum, are commonly associated with hypospadias. Surgical correction is typically performed during early childhood to restore normal appearance and function.

Penile block is a widely used regional anesthesia technique for hypospadias repair, It involves the administration of a local anesthetic around the penile nerve, providing effective pain relief during and after surgery. While effective, the duration of analgesia provided by a penile block with local anesthetics alone is often limited, necessitating the use of additional analgesics in the postoperative period.

Dexmedetomidine is a highly selective alpha-2 adrenergic agonist with sedative, anxiolytic, and analgesic properties. It has been increasingly used as an adjuvant in regional anesthesia to prolong the duration of analgesia and reduce opioid consumption .

The addition of dexmedetomidine to local anesthetics has been shown to enhance the quality and duration of nerve blocks in various surgical settings but its efficacy in penile block for pediatric hypospadias repair has not been extensively studied.

the aim of the study To assess the duration of analgesia provided by the penile block with dexmedetomidine.

Timing and episodes of rescue analgesia consumption . To monitor and report any adverse effects associated with the use of dexmedetomidine such as hypotension and bradycardia

Detailed Description

The main issue with pain management in children especially young children is the difficulty involved in evaluating it. When a patient's level of pain cannot be accurately assessed, effective analgesia cannot be prescribed. When children are not sufficiently treated for pain, stress hormones are released into their systems, resulting in increased catabolism, immunosuppression and hemodynamic instability .

Peripheral nerve blocks may be favored over neuroaxial blocks because they allow quicker mobilization after surgery.

Hypospadias results from abnormal development of the penis that leaves the urethral meatus proximal to its normal glanular position anywhere along the penile shaft, scrotum, or perineum. A spectrum of abnormalities, including ventral curvature of the penis (chordee), a hooded incomplete prepuce, and an abortive corpora spongiosum, are commonly associated with hypospadias. Surgical correction is typically performed during early childhood to restore normal appearance and function.

Penile block is a widely used regional anesthesia technique for hypospadias repair, It involves the administration of a local anesthetic around the penile nerve, providing effective pain relief during and after surgery. While effective, the duration of analgesia provided by a penile block with local anesthetics alone is often limited, necessitating the use of additional analgesics in the postoperative period.

Dexmedetomidine is a highly selective alpha-2 adrenergic agonist with sedative, anxiolytic, and analgesic properties. It has been increasingly used as an adjuvant in regional anesthesia to prolong the duration of analgesia and reduce opioid consumption .

The addition of dexmedetomidine to local anesthetics has been shown to enhance the quality and duration of nerve blocks in various surgical settings but its efficacy in penile block for pediatric hypospadias repair has not been extensively studied.

Study Timeline

• Status Verified: 2025-01
• Study First Submitted: 2025-01-17
• Study First Submitted QC: 2025-01-17
• Last Update Submitted: 2025-01-17
• Study First Posted: 2025-01-23
• Last Update Posted: 2025-01-23
• Study Start: 2025-03-01
• Primary Completion: 2026-03-01
• Study Completion: 2027-05-01

Recruitment & Eligibility

• Status: NOT_YET_RECRUITING
• Sex: All
• Target Recruitment: 80

Inclusion Criteria

• Children aged 6 months to 7 years
• Scheduled for primary hypospadias repair under general anesthesia
• Parental consent obtained

Exclusion Criteria

• • Known allergy to dexmedetomidine or other study medications .
• History of cardiovascular or respiratory disease.
• Active infection.
• History of developmental or mental retardation .
• Coagulation disorders.
• Parental refusal.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Group A	Dexmedetomidine	Penile block with bupivacaine 0.25% (0.2 ml/kg) plus dexmedetomidine (0.5 mcg/kg)
Group A	Bupivacaine	Penile block with bupivacaine 0.25% (0.2 ml/kg) plus dexmedetomidine (0.5 mcg/kg)
Group B	Bupivacaine	Penile block with bupivacaine 0.25% (0.2 ml/kg) only

Primary Outcome Measures

Name	Time	Method
FLACC Pain score	24 hours	FLACC Pain score (Face,Leg,Activity,Cry,Consolability) in pediatric patients undergoing hypospadias repair(post-operative). A total score between 0 and 10 It will be measured at the recovery room and 2,6,12,24 hours posoprtatively