Anatomical Measurements of Pudendal Nerve Block in Children

Istanbul University - Cerrahpasa

Status: Not yet enrolling

Conditions: Postoperative Pain Management; Penile Surgery-Related Pain

Treatments: Procedure: Neurostimulation-Guided Pudendal Nerve Block

Study type: Observational

Funder types: Other

Identifiers

NCT07348029

ctf- pudental mesafe- 04

Details and patient eligibility

About

This prospective observational study aims to investigate the relationship between anatomical parameters-specifically the distance from the anus to the needle insertion point and the depth required to reach the pudendal nerve-during neurostimulation-guided pudendal nerve block and patients' age, height, and weight in children undergoing penile surgery.

Full description

The pudendal nerve originates from the sacral nerve roots Sacral2-Sacral4 and provides sensory and motor innervation to the penile and perineal regions. Effective postoperative analgesia is essential in pediatric penile surgeries. Pudendal nerve block may provide longer-lasting and more effective analgesia compared to caudal or penile blocks.

However, due to age- and size-related anatomical variability in children, data regarding optimal needle insertion distance and depth to reach the pudendal nerve are limited. In this study, neurostimulation will be used to confirm pudendal nerve localization, and anatomical measurements will be analyzed in relation to demographic parameters.

Enrollment: 50 estimated patients

Sex: All

Ages: 1 to 18 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Children aged 1-18 years
• Scheduled for penile surgery (e.g., hypospadias, phimosis)
• Planned to receive neurostimulation-guided pudendal nerve block
• Patient and parents/legal guardians willing to participate under general anesthesia

Exclusion criteria

• Patients with incomplete measurement data
• Cases where successful nerve block cannot be performed or nerve stimulation is not detectable at currents ≥1.5 mA
• Patients or parents/legal guardians who refuse pudendal nerve block
• Patients with pelvic deformities or neuromuscular disorders

Trial design

50 participants in 1 patient group

Pediatric Penile Surgery Cohort

Description:

Children aged 1-18 years undergoing penile surgery with neurostimulation-guided pudendal nerve block; anatomical measurements of needle insertion distance from anus and nerve depth are recorded.

Treatment:

Procedure: Neurostimulation-Guided Pudendal Nerve Block