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Real-time Ultrasound Guidance for Thoracic Epidural Blocks

NCT05165498 · Status: WITHDRAWN · Type: OBSERVATIONAL

Last updated 2026-05-19

No results posted yet for this study

Summary

Various modalities have been proposed for real-time confirmation of loss of resistance (LOR) for thoracic epidural blocks. With real-time ultrasound (US) guidance, the anesthesiologist attempts to visualize the sonographic advancement of the epidural needle and penetration of the epidural space (as detected by LOR)

This observational study is set out to confirm the reliability of real-time ultrasound guidance as an adjunct to LOR for thoracic epidural blocks.

Conditions

  • Analgesia
  • Thoracic Tumors
  • Abdomen Tumors
  • Rib Fractures

Interventions

PROCEDURE

Real-time ultrasound guidance for thoracic epidural catheter placement.

With an US-guided parasagittal oblique approach, the interlaminar space at the union between laminas and spinous processes at the predefined insertion level will be identified. A skin wheal will be raised with 3 mL of lidocaine 1%. Afterward, an 18-gauge Tuohy epidural block needle will be advanced under direct US vision until the tip is insinuated between the laminas and anchored to the flavum ligament. Then the needle will be attached to a low resistance syringe prefilled with saline solution and advanced until LOR to injection is confirmed. Then a 20-Gauge epidural catheter will be inserted 3-5 cm beyond the needle tip inside the epidural space and the needle removed.

Sponsors & Collaborators

  • University of Chile

    lead OTHER

Principal Investigators

  • Julián Aliste, MD · University of Chile

Eligibility

Min Age
18 Years
Max Age
80 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2027-07-31
Primary Completion
2028-12-31
Completion
2028-12-31

Countries

  • Chile

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05165498 on ClinicalTrials.gov