NCT06483659

Brief Summary

This is a randomized, double-blinded, placebo-controlled trial to compare the effectiveness of IV oxytocin infusion to placebo on peri-operative opioid consumption and reducing post-operative pain following a minimally invasive hysterectomy under general anesthesia.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
152

participants targeted

Target at P75+ for phase_2 postoperative-pain

Timeline
7mo left

Started Jun 2025

Typical duration for phase_2 postoperative-pain

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress62%
Jun 2025Dec 2026

First Submitted

Initial submission to the registry

June 23, 2024

Completed
10 days until next milestone

First Posted

Study publicly available on registry

July 3, 2024

Completed
11 months until next milestone

Study Start

First participant enrolled

June 1, 2025

Completed
1.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 1, 2026

Expected
5 months until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2026

Last Updated

December 30, 2025

Status Verified

December 1, 2025

Enrollment Period

1.1 years

First QC Date

June 23, 2024

Last Update Submit

December 28, 2025

Conditions

Outcome Measures

Primary Outcomes (1)

  • Post-operative pain

    Assess the impact of a perioperative infusion of oxytocin on postoperative pain, the average patient pain scores measured as a mean Brief Pain Inventory in PACU after laparoscopic hysterectomy in treated and untreated groups will be compared

    Between 2-4 hours after surgery completion (in the PACU)

Secondary Outcomes (14)

  • Perioperative opioid consumption

    From start of infusion until approximately 6 hour mark (infusion completion)

  • POD1 Opioid consumption

    In the first 24 hours after surgery

  • POD2 Opioid consumption

    From 24-48 hours after surgery

  • POD3 Opioid consumption

    From 48-72 hours after surgery

  • PACU satisfaction scores

    Between 2-4 hours after surgery completion (in the PACU)

  • +9 more secondary outcomes

Study Arms (2)

Medication

ACTIVE COMPARATOR

one group will receive Oxytocin infusion: 30 IU in 500 ml of 0.9% normal saline .

Drug: Oxytocin

Placebo

PLACEBO COMPARATOR

one group will receive 500 ml of 0.9% normal saline

Drug: Placebo

Interventions

Intravenous Oxytocin infusion

Also known as: Pitocin
Medication

0.9% Saline

Also known as: Normal Saline, 0.9% Saline
Placebo

Eligibility Criteria

Age18 Years - 65 Years
Sexfemale
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Ages 18-65 years old
  • ASA category 1-3
  • Scheduled to undergo minimally invasive hysterectomy
  • No documented allergy to oxytocin

You may not qualify if:

  • American Society of Anesthesiologists (ASA) group 4 or greater
  • Age \>65 years old
  • Additional surgical procedures including but not limited to minor laparotomy, omentectomy, cystectomy, vaginectomy, and/or ablation of endometriosis.
  • Active opioid prescription of the equivalent of oxycodone \>10 mg /day
  • Opioid use disorder, including patients in treatment receiving naltrexone or Suboxone (Buprenorphine-naloxone)
  • Allergies to any study medication: acetaminophen, celecoxib, ketorolac, fentanyl, hydromorphone, or oxycodone.
  • Epidural/Regional anesthesia for intra-operative or post-operative pain.
  • Inability to understand the questionnaires

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Brigham and Women's Hospital

Boston, Massachusetts, 02215, United States

RECRUITING

Related Publications (15)

  • Soffin EM, Lee BH, Kumar KK, Wu CL. The prescription opioid crisis: role of the anaesthesiologist in reducing opioid use and misuse. Br J Anaesth. 2019 Jun;122(6):e198-e208. doi: 10.1016/j.bja.2018.11.019. Epub 2018 Dec 28.

    PMID: 30915988BACKGROUND
  • Brummett CM, Waljee JF, Goesling J, Moser S, Lin P, Englesbe MJ, Bohnert ASB, Kheterpal S, Nallamothu BK. New Persistent Opioid Use After Minor and Major Surgical Procedures in US Adults. JAMA Surg. 2017 Jun 21;152(6):e170504. doi: 10.1001/jamasurg.2017.0504. Epub 2017 Jun 21.

    PMID: 28403427BACKGROUND
  • Bae S, Alboog A, Esquivel KS, Abbasi A, Zhou J, Chui J. Efficacy of perioperative pharmacological and regional pain interventions in adult spine surgery: a network meta-analysis and systematic review of randomised controlled trials. Br J Anaesth. 2022 Jan;128(1):98-117. doi: 10.1016/j.bja.2021.08.034. Epub 2021 Nov 10.

    PMID: 34774296BACKGROUND
  • Lundeberg T, Uvnas-Moberg K, Agren G, Bruzelius G. Anti-nociceptive effects of oxytocin in rats and mice. Neurosci Lett. 1994 Mar 28;170(1):153-7. doi: 10.1016/0304-3940(94)90262-3.

    PMID: 8041495BACKGROUND
  • Biurrun Manresa JA, Schliessbach J, Vuilleumier PH, Muller M, Musshoff F, Stamer U, Stuber F, Arendt-Nielsen L, Curatolo M. Anti-nociceptive effects of oxytocin receptor modulation in healthy volunteers-A randomized, double-blinded, placebo-controlled study. Eur J Pain. 2021 Sep;25(8):1723-1738. doi: 10.1002/ejp.1781. Epub 2021 May 3.

    PMID: 33884702BACKGROUND
  • Matsuura T, Motojima Y, Kawasaki M, Ohnishi H, Sakai A, Ueta Y. [Relationship Between Oxytocin and Pain Modulation and Inflammation]. J UOEH. 2016;38(4):325-334. doi: 10.7888/juoeh.38.325. Japanese.

    PMID: 27980316BACKGROUND
  • Gimpl G, Fahrenholz F. The oxytocin receptor system: structure, function, and regulation. Physiol Rev. 2001 Apr;81(2):629-83. doi: 10.1152/physrev.2001.81.2.629.

    PMID: 11274341BACKGROUND
  • Baribeau DA, Anagnostou E. Oxytocin and vasopressin: linking pituitary neuropeptides and their receptors to social neurocircuits. Front Neurosci. 2015 Sep 24;9:335. doi: 10.3389/fnins.2015.00335. eCollection 2015.

    PMID: 26441508BACKGROUND
  • Miranda-Cardenas Y, Rojas-Piloni G, Martinez-Lorenzana G, Rodriguez-Jimenez J, Lopez-Hidalgo M, Freund-Mercier MJ, Condes-Lara M. Oxytocin and electrical stimulation of the paraventricular hypothalamic nucleus produce antinociceptive effects that are reversed by an oxytocin antagonist. Pain. 2006 May;122(1-2):182-9. doi: 10.1016/j.pain.2006.01.029. Epub 2006 Mar 9.

    PMID: 16527400BACKGROUND
  • Yang J. Intrathecal administration of oxytocin induces analgesia in low back pain involving the endogenous opiate peptide system. Spine (Phila Pa 1976). 1994 Apr 15;19(8):867-71. doi: 10.1097/00007632-199404150-00001.

    PMID: 8009342BACKGROUND
  • Madrazo I, Franco-Bourland RE, Leon-Meza VM, Mena I. Intraventricular somatostatin-14, arginine vasopressin, and oxytocin: analgesic effect in a patient with intractable cancer pain. Appl Neurophysiol. 1987;50(1-6):427-31. doi: 10.1159/000100753.

    PMID: 2897190BACKGROUND
  • Ende HB, Soens MA, Nandi M, Strichartz GR, Schreiber KL. Association of Interindividual Variation in Plasma Oxytocin With Postcesarean Incisional Pain. Anesth Analg. 2019 Oct;129(4):e118-e121. doi: 10.1213/ANE.0000000000003567.

    PMID: 29916862BACKGROUND
  • ACOG Practice Bulletin No. 107: Induction of labor. Obstet Gynecol. 2009 Aug;114(2 Pt 1):386-397. doi: 10.1097/AOG.0b013e3181b48ef5. No abstract available.

    PMID: 19623003BACKGROUND
  • Kovacheva VP, Soens MA, Tsen LC. A Randomized, Double-blinded Trial of a "Rule of Threes" Algorithm versus Continuous Infusion of Oxytocin during Elective Cesarean Delivery. Anesthesiology. 2015 Jul;123(1):92-100. doi: 10.1097/ALN.0000000000000682.

    PMID: 25909969BACKGROUND
  • Heesen M, Carvalho B, Carvalho JCA, Duvekot JJ, Dyer RA, Lucas DN, McDonnell N, Orbach-Zinger S, Kinsella SM. International consensus statement on the use of uterotonic agents during caesarean section. Anaesthesia. 2019 Oct;74(10):1305-1319. doi: 10.1111/anae.14757. Epub 2019 Jul 25.

    PMID: 31347151BACKGROUND

MeSH Terms

Conditions

Pain, Postoperative

Interventions

OxytocinSaline Solution

Condition Hierarchy (Ancestors)

Postoperative ComplicationsPathologic ProcessesPathological Conditions, Signs and SymptomsPainNeurologic ManifestationsSigns and Symptoms

Intervention Hierarchy (Ancestors)

Pituitary Hormones, PosteriorPituitary HormonesPeptide HormonesHormonesHormones, Hormone Substitutes, and Hormone AntagonistsPeptidesAmino Acids, Peptides, and ProteinsCrystalloid SolutionsIsotonic SolutionsSolutionsPharmaceutical Preparations

Central Study Contacts

Study Design

Study Type
interventional
Phase
phase 2
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Masking Details
Randomization of the study medication will be performed by the investigational drug pharmacy and the unblinded key will be stored in a secure location in the pharmacy.
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: 152 study subjects who are having minimally invasive abdominal hysterectomy will be randomized into one of two treatment groups, the first group will receive Oxytocin I.V. infusion and the second group will receive Saline infusion, and both groups will be followed up with surveys for up to 3 months after surgery.
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Director of Fellowship Research

Study Record Dates

First Submitted

June 23, 2024

First Posted

July 3, 2024

Study Start

June 1, 2025

Primary Completion (Estimated)

July 1, 2026

Study Completion (Estimated)

December 1, 2026

Last Updated

December 30, 2025

Record last verified: 2025-12

Data Sharing

IPD Sharing
Will not share

Locations