Injecting pain relief for vaginal lacerations after delivery

A Randomized Controlled Trial of Bupivacaine With Epinephrine for Local Pain Control Following Perineal Laceration Repair in Patients With Pre-existing Epidural Analgesia: The PAIN Trial

Phase 4 Interventional Montefiore Medical Center · NCT05972681

This study is testing if a pain relief injection can help women with vaginal tears after childbirth feel better once their epidural wears off.

Quick facts

PhasePhase 4
Study typeInterventional
Enrollment100 (estimated)
Ages18 Years and up
SexFemale
SponsorMontefiore Medical Center Academic / other
Locations1 site (The Bronx, New York)
Trial IDNCT05972681 on ClinicalTrials.gov

What this trial studies

This study investigates the effectiveness of a locally injected analgesic, bupivacaine, combined with epinephrine, for women who experience vaginal lacerations during delivery and have received epidural analgesia. The goal is to alleviate postpartum perineal pain once the effects of the epidural fade, potentially improving recovery and overall satisfaction. The study employs a superiority design with two arms, including a sham saline group, and is quadruple-blinded to ensure unbiased results. Participants will be monitored for pain relief and overall well-being following the intervention.

Who should consider this trial

Good fit: Ideal candidates are healthy women aged 18 and older with a singleton pregnancy who are receiving epidural analgesia during vaginal delivery.

Not a fit: Patients who have experienced complications such as postpartum hemorrhage or those with non-functional epidurals may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could significantly reduce postpartum pain and enhance recovery for women after vaginal delivery.

How similar studies have performed: While similar approaches have been explored, this specific method of using a local injection post-epidural for vaginal lacerations is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* \>= 18 years old
* Healthy with a singleton pregnancy
* English or Spanish speaking
* Ongoing functioning epidural throughout the laceration repair
* Multiparous or nulliparous
* Ability to consent for themselves

Exclusion Criteria:

* Underwent an operative vaginal delivery and whose vaginal delivery was complicated by a postpartum hemorrhage
* Vaginal delivery was complicated by a postpartum hemorrhage
* Have multiple gestations
* Complaints of non-functional epidural
* Allergic to bupivacaine and/or epinephrine
* Epidural was a combined spinal-epidural (CSE)
* Received an epidural top-off (bolus of local anesthetic injected into the epidural catheter) \< 3 hours from the perineal repair
* Experienced extreme pain at time of study consent (pain scale score \> 3 on 0-10 scale)

Where this trial is running

The Bronx, New York

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Vaginal Laceration During Delivery
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.