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Ultrasound Determination of Needle Depth in Epidurals in Adult Patients

This study has been completed.
Information provided by (Responsible Party):
University of Chicago Identifier:
First received: September 21, 2009
Last updated: September 4, 2013
Last verified: September 2013

The introduction of local anesthetics and other medications into the epidural space is a principal technique in provision of anesthesia in many procedures. Typically the anesthetist accesses the epidural space blindly using palpation and visualization of external landmarks and then uses a needle to get to the epidural space. The investigators propose a prospective study of use of ultrasound in a large heterogeneous group of surgical candidates to define the relationship between the actual needle depth (ND) to the epidural space and measured ultrasound depth (UD). Establishing correctly the depth to the epidural space via ultrasound is a component of ultrasound imaging that might improve current technique, and might lead to faster performance of the epidural. Use of ultrasound may also improve the efficacy and safety of epidural placement.

The null hypothesis of this study is that ultrasound depth is similar to the needle depth in adult non parturient patients undergoing lumbar and thoracic epidurals. A parturient in this case is defined as a female currently near or going through labor.

Analgesia, Epidural

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Prospective
Official Title: Ultrasound Determination of Needle Depth in Lumbar and Thoracic Epidurals in Adult Non-Parturient Patients

Resource links provided by NLM:

Further study details as provided by University of Chicago:

Primary Outcome Measures:
  • Ultrasound depth [ Time Frame: At time of exam ]
    Depth to epidural space as determined by ultrasound probe

Enrollment: 42
Study Start Date: September 2009
Study Completion Date: June 2010
Primary Completion Date: June 2010 (Final data collection date for primary outcome measure)

Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
The patient population will include all non parturients above the age of 18 who are candidates for epidural placement prior to surgery

Inclusion Criteria:

  • The patient population will include all non parturients above the age of 18 who are candidates for epidural placement prior to surgery.

Exclusion Criteria:

  • Parturients, prisoners and patients younger than 18 years old will be excluded from this study.
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Please refer to this study by its identifier: NCT00981916

United States, Illinois
University of Chicago
Chicago, Illinois, United States, 60637
Sponsors and Collaborators
University of Chicago
  More Information

Responsible Party: University of Chicago Identifier: NCT00981916     History of Changes
Other Study ID Numbers: 16451A
Study First Received: September 21, 2009
Last Updated: September 4, 2013

Keywords provided by University of Chicago:
determination of depth to epidural space using ultrasound processed this record on May 25, 2017