Ultrasound Measured Epidural Depth for Midline Approach in Pediatric Patients With Scoliosis: Prospective Observational Study

Study Overview
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Brief Summary
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The purpose of this study was to investigate the degree of agreement between the ultrasound-measured depth (in the transverse median and paramedian sagittal oblique plane) and the actual depth to the epidural space in pediatric patients with scoliosis. investigate the quality of ultrasound view for detecting ligamentum flavum and dura mater.

Official Title
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Ultrasound Measured Epidural Depth for Midline Approach in Pediatric Patients With Scoliosis: Prospective Observational Study

Conditions
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Scoliosis

Intervention / Treatment
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* Device: Ultrasound


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 1. pediatric patients (aged 3-14 years) with scoliosis (cobb angle >10 degree) scheduled for correctional osteotomy of the lower extremity and requesting epidural analgesia for postoperative pain control Exclusion Criteria: Contraindications to epidural analgesia (local infection, blood clotting disorder, anatomical abnormality, sepsis, etc.) If all of the parents of the subject are foreigners or illiterate (if the parents of the subject can not read the agreement)

Ages Eligible for Study
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Minimum Age: 3 Years
Maximum Age: 14 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| pediatric patients with scoliosis<br>Patients aged 3-14 years with scoliosis and who request epidural analgesia | Device: Ultrasound<br>* Using ultrasound with transverse median and paramedian sagittal oblique approach, the screens that show the target epidural space in the center are obtained and stored for evaluation.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| the degree of agreement between the ultrasound-measured depth and the actual depth to the epidural space | the degree of agreement between the ultrasound-measured depth (in the transverse median and paramedian sagittal oblique plane) and the actual depth to the epidural space in pediatric patients with scoliosis. | Ultrasound image, which is obtained before epidural Touhy needle insertion, will be evaluated within 1 week after epidural Touhy needle insertion | 
| the quality of ultrasound view for detecting ligamentum flavum and dura mater (in the transverse median and paramedian sagittal oblique plane) | the quality of ultrasound view for detecting ligamentum flavum and dura mater (in the transverse median and paramedian sagittal oblique plane). Good: The distinction is clear and visible Fair: Visible by adjusting the probe Poor: Observation is difficult even when the probe is adjusted | Ultrasound image, which is obtained before epidural Touhy needle insertion, will be evaluated within 1 week after epidural Touhy needle insertion |