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Ropivacaine and Fentanyl for Labor Epidural Initiation

Determination of the 90% Effective Volume (ED90) of Epidural 0.1% Ropivacaine and Fentanyl for Labor Analgesia Initiation in Patients Receiving a Dural-Puncture Epidural Technique

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07076368
Acronym
EV90_DPE
Enrollment
50
Registered
2025-07-22
Start date
2025-10-24
Completion date
2026-07-31
Last updated
2026-01-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Labor Analgesia, Labor and Delivery, Pregnancy

Keywords

epidural, labor analgesia, pregnancy, obstetric anesthesia

Brief summary

This study is being done to determine the most effective dose of medicine to use to initially provide effective pain relief within the first 30 minutes of receiving an epidural for pain labor during labor. The study team will also study any side effects related to the epidural medication and patients' satisfaction with the quality of pain relief after receiving the epidural.

Detailed description

We aim to perform a prospective observational study in a single cohort of 50 patients receiving a dural-puncture epidural technique for labor analgesia. We will use a biased-coin up-down allocation methodology to quantify the volume of a combined epidural 0.1% ropivacaine and 2 mcg/ml fentanyl regimen that achieves effective analgesia in 90% of patients experiencing active labor who receive a dural-puncture epidural technique for labor analgesia.

Interventions

A standard epidural admixture - 0.1% Ropivacaine + 2 mcg/ml fentanyl - will be used.

Sponsors

University of California, San Francisco
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

This is a single-center, double-blind, prospective study that will use a biased-coin-up-down allocation study design to quantify the effective volume in 90% of laboring patients (EDV) after a dural-puncture epidural (DPE) technique for neuraxial analgesia. We wish to declare that the participant, care providers, and outcomes assessor will be masked. The ClinicalTrials website does not allow us to tick these roles for a single-arm study.

Eligibility

Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patients with singleton vertex pregnancies in active labor (latent or spontaneous labor or after induction of labor) * Cervical dilatation between 2 and 7 cm * Requesting neuraxial labor analgesia * Age 18 or older

Exclusion criteria

* Significant obstetric disease (e.g., pre-eclampsia, major cardiac disease) * Chronic pain or chronic opioid use * BMI ≥ 50 * Multiple gestations * Allergy or anaphylaxis to local anesthetic * Fetal compromise or non-reassuring fetal trace * Age under 18 * Inability to speak and understand English or Spanish

Design outcomes

Primary

MeasureTime frameDescription
Numerical Pain score30 mins post-interventionNumerical pain score using a discrete range from 0 (no pain) to 10 (most severe pain).

Countries

United States

Contacts

CONTACTAlexander Butwick, MBBS, FRCA, MS
alexander.butwick@ucsf.edu415-514-3757
PRINCIPAL_INVESTIGATORAlexander Butwick, MBBS, FRCA, MS

University of California, San Francisco

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026