EpiFaith Resident Learning Curve Trial

August 19, 2026 updated by: Michaela Kristina Farber, MD, Brigham and Women's Hospital

Impact of the EpiFaith® Syringe on the Learning Curve of Anesthesia Residents for the Labor Epidural Technique: A Quasi-Experimental Study

This study aims to evaluate the impact of the EpiFaith® syringe on the learning curve of anesthesia residents for the labor epidural technique. Anesthesia residents with prior experience placing < 5 labor epidurals will be enrolled. Their performance of 20 sequential labor epidural placements with either standard technique with a beveled glass syringe or the EpiFaith® syringe will be observed. Successful epidural placement over time with sequential epidural placement attempts will be measured between groups. The primary outcome will be rate of successful epidural placement. Success will be defined as a composite of 4 criteria: maximum 3 attempts for placement; no need to re-site at a different level; no required intervention by the supervising attending anesthesiologist; and adequate analgesia with a visual analog score (VAS) <3 at 30 minutes. We hypothesize that use of the EpiFaith® syringe will enable a faster learning curve for successful epidural placement. A cumulative sum chart (CUSUM) analysis will evaluate whether the EpiFaith® syringe causes deviation from the control learning curve. Secondary outcomes will include rate of inadvertent dural puncture and epidural replacement rate.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The lumbar epidural technique for labor analgesia requires technical training and a manual skillset. A prior study evaluating anesthesia resident learning curves for a traditional labor epidural technique demonstrated a steep learning curve for the first 20 epidural placements, followed by a plateau with gradual proficiency maximized after 60 epidural placements (1). A prior study evaluated a spring-loaded epidural syringe among experienced providers (2). However, the impact of a spring-loaded epidural syringe on novice anesthesia resident learning curves is unknown. In addition, the impact of EpiFaith® use at the time of manual skill acquisition on success with subsequent traditional epidural technical skills is unknown.

The EpiFaith® syringe is FDA-cleared and has a spring-loaded piston designed to detect entry into the epidural space upon loss of resistance (LOR) as the epidural needle tip moves from the dense ligamentum flavum to the high-compliance epidural space. Performing the LOR technique using the EpiFaith® syringe, the piston within the syringe moves forward driven by spring force when a drop in pressure is detected. Piston movement within the syringe is visibly detectable with a yellow indicator in the syringe when LOR occurs. In a feasibility study of 40 labor epidural placements, 3 of 4 expert obstetric anesthesiology physicians reported the EpiFaith® syringe to be equal to superior in quality to the standard LOR syringe, with 100% success rate and no inadvertent dural punctures (3).

Evaluating the impact of the EpiFaith® syringe on learning curves of anesthesia residents with minimal prior technical experience will help inform how we approach education regarding the labor epidural technique. Steeper learning curves with faster time to proficiency may benefit both patients and supervising staff, while if no difference is determined, the use of the EpiFaith® syringe can be de-emphasized during the training period.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
34

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

Study Locations

  • United States
    • Massachusetts
      • Boston, Massachusetts, United States, 02115
        • Recruiting
        • Brigham and Women's Hospital
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Anesthesiology residents with fewer than 5 prior epidural placement experiences

Exclusion Criteria:

  • anesthesiology residents with more than 5 prior epidural placement experiences

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Supportive Care
  • Allocation: Non-Randomized
  • Interventional Model: Factorial Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Control (glass epidural syringe)
Device: Control (glass) syringe
glass epidural syringe
Experimental: EpiFaith syringe
Device: EpiFaith epidural syringe
The EpiFaith syringe is an FDA-cleared epidural syringe.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
success of labor epidural attempt
Time Frame: time of epidural placement to 30 minutes after dosing of the epidural

success of labor epidural attempt over time by each resident, with success defined as a composite requiring:

  1. Less than 3 attempts for placement
  2. No need to re-site the epidural needle
  3. No staff intervention
  4. NRS 3 or less at 30 minutes post-loading epidural dose
time of epidural placement to 30 minutes after dosing of the epidural

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
rating of the epidural syringe
Time Frame: from time of placement to immediately following placement
rating of the epidural syringe loss of resistance technique
from time of placement to immediately following placement
Incidence of inadvertent dural puncture
Time Frame: from time of epidural placement for a maximum of 5 days
incidence of inadvertent dural puncture
from time of epidural placement for a maximum of 5 days
incidence of postdural puncture headache
Time Frame: from time of epidural placement up to 5 days
incidence of postdural puncture headache
from time of epidural placement up to 5 days
Need for epidural catheter replacement during labor
Time Frame: from time of epidural placement through delivery during hospital admission
need for epidural catheter replacement during labor
from time of epidural placement through delivery during hospital admission

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Brigham and Women's Hospital

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
September 1, 2023

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 1, 2026

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2026

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
January 17, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
January 31, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
February 9, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
August 21, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 19, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
August 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 2023P001926
  • 2023A006350 (Other Grant/Funding Number: Flat Medical)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

Yes

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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