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Clinical Trials/NCT07076368
NCT07076368RecruitingPhase 3

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

University of California, San Francisco1 site in 1 country50 target enrollmentStarted: October 24, 2025Last updated:
Conditions
Interventions
Drugs

Trial Snapshot

Phase
Phase 3
Status
Recruiting
Enrollment
50
Locations
1
Primary Endpoint
Numerical Pain score

Study Overview

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.

Study Design

Study Type
Interventional
Allocation
Na
Intervention Model
Single Group
Primary Purpose
Treatment
Masking
None

Eligibility Criteria

Ages
18 Years to — (Adult, Older Adult)
Sex
Female
Accepts 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
  • •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

Arms & Interventions

Observational Cohort

Experimental

Patients with singleton vertex pregnancies in active labor (spontaneous or after induction of labor), with a cervical dilatation between 1 and 7cm who are requesting neuraxial labor analgesia, Age =>18 yrs

Intervention: Ropivacaine + Fentanyl (Drug)

Outcomes

Primary Outcomes

Numerical Pain score

Time Frame: 30 mins post-intervention

Numerical pain score using a discrete range from 0 (no pain) to 10 (most severe pain).

Secondary Outcomes

No secondary outcomes reported

Investigators

Sponsor Class
Other
Responsible Party
Sponsor

Study Sites (1)

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