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CompletedNCT05052658Updated Jan 25, 2023

Ultrasound High BMI Study

An interventional study of Neuraxial block placement in Obesity Complicating Childbirth, sponsored by University of Kentucky. Completed at 1 site in United States. Open to female participants aged 18 Years to 50 Years. Per ClinicalTrials.gov, last updated 2023-01-25.

Sponsored by University of Kentucky · Not applicable, Interventional, and Supportive care

Phase
Not applicable
Study type
Interventional
Enrollment
23
Allocation
Randomized
Ages
18 Years to 50 Years
Sex
Female
01

Study summary

This is a prospective experimental pilot study of full-term non-emergent obese parturients whose labor is being managed with epidural anesthesia to determine if neuraxial block placement with pre-procedure handheld ultrasound affects time to placement or number of needle passes. Approximately 25 patients, presenting for delivery at the University of Kentucky HealthCare Obstetrics Department, will be randomized to either the ultrasound or palpation group, between study approval and 31 July 2022.

Read the detailed description

Placement of neuraxial blocks is commonly achieved by palpating surface landmarks. This somewhat "blind" technique to identify the spinal space becomes more difficult and less reliable in obese patients. Ultrasound devices have become common and successful with blocks and venous access, both involving mostly soft tissues. Application of conventional ultrasound for neuraxial blocks has been limited by its bulkiness, limited imaging for bony structures and a long learning curve. A newly developed pocket-size ultrasound addresses these limitations by providing real-time pattern recognition for spinal bony structures and 3D overlay for recognition of midline spinous process and intervertebral space using an automated artificial intelligent algorithm. The hypothesis is that ultrasound guidance will reduce time to epidural placement and reduce number of passes in obese patients.

02

Conditions studied

  • Obesity Complicating Childbirth

Keywords

  • High BMI, pregnancy, ultrasound
03

In context

Lead sponsor

University of Kentucky is the lead sponsor of 68 studies on the registry; 7 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 50 Years
Sexes eligible
Female
Accepts healthy volunteers
No

Inclusion criteria

  • Subject requesting and consenting for a labor epidural, aged 18-50 and BMI between 35-59.9 at admission for labor.
  • Subject with American Society of Anesthesiologists score equal to or less than III.
  • Subject with singleton gestation equal to or greater than 37 weeks.
  • Subjects with planned labor epidural in sitting position.

Exclusion criteria

Exclusion Criteria:

  • Patients with urgent or emergent diagnoses involving the health of the patient or child, such as abnormal fetal heart tracing.
  • Patients with major back abnormalities (back surgery, significant scoliosis).
  • Patients with contra-indication to neuraxial block (bleeding risk, local anesthetic allergy).
  • Patients having cesarean section or combined spinal epidural.
  • Patients whose epidurals are performed by residents in first month of obstetric rotation and/or having performed fewer than 20 labor epidurals in total.
  • Patient needing a translator for procedure.
  • Patients who are prisoners.
05

Study design

Phase
Not applicable
Primary purpose
Supportive care
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
23 participants (actual)

Study arms

  • Active comparator
    Palpation Group

    Procedure: Neuraxial block placement

  • Experimental
    Ultrasound Group

    Procedure: Neuraxial block placement

Interventions

  • ProcedureNeuraxial block placement

    The time and ease of administering neuraxial blocks in high BMI patients,for the management of labor and delivery pain, will be assessed.

06

What researchers measure

Primary outcomes

  1. Time to placement of neuraxial block in parturients with BMI=35-59.9

    Time period from initially touching the patient's skin to removal of Tuohy needle after catheter placement.

    Time frame: Time from start of epidural procedure to placement of epidural needle, not to exceed more than1 hour

  2. Number of passes to placement of neuraxial block in parturients with BMI=35-59.9

    Number of times the epidural needle is removed from skin and re-entered

    Time frame: Time from start of epidural procedure to placement of epidural needle, not to exceed more than1 hour

07

Study locations

1 site
  • University of Kentucky Medical Center
    Lexington, Kentucky 40536, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 25, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT05052658
Lead sponsor
University of Kentucky
Responsible party
Regina Fragneto (Professor, Dept of Anesthesiology, University of Kentucky) — Principal investigator
First posted
Sep 22, 2021
Start date
Oct 27, 2021
Primary completion
Dec 13, 2022
Completion
Dec 13, 2022
Last update
Jan 25, 2023

Study contacts

Regina Fragneto, MD
principal investigator · University of Kentucky

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jan 2023. You cannot join it, but the record below documents what was studied.

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