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2.5% Lidocaine/2.5% Prilocaine Cream for IUD Insertion and Endometrial Biopsy

11 agosto 2026 aggiornato da: Mara Sobel, Mount Sinai Hospital, Canada

A Double-blind Placebo-controlled Randomized Controlled Trial (RCT) of Self-application of Lidocaine 2.5%/Prilocaine 2.5% Cream for Intrauterine Device (IUD) Insertion and Endometrial Biopsy

The aim of this study is to determine if 5g of self-administered topical 2.5% lidocaine/2.5% prilocaine cream, reduces pain during IUD insertion and/or endometrial biopsy. The proposed study is a double-blind, placebo-controlled RCT. Each participant will be randomly assigned to one of two arms: 1) Intervention (5g of 2.5% lidocaine/2.5% prilocaine cream in a pre-filled vaginal applicator). 2) Placebo (5g of VersaPro cream in a pre-filled vaginal applicator). Participants will be asked to self-administer the pre-filled vaginal applicator at least 10-15 minutes prior to the procedure. The patient will be asked to rate their pain throughout various steps of the procedure and complete a post-procedure survey afterwards. The primary outcome is global pain score, which will be patient-reported by the 100 mm Visual Analogue Scale (VAS) 5-minutes following the procedure (endometrial biopsy or IUD insertion).

Panoramica dello studio

Stato

Non ancora reclutamento

Condizioni

Intervento / Trattamento

Descrizione dettagliata

The proposed study is a double-blind, placebo-controlled randomized controlled trial (RCT). Participants will be recruited from Mount Sinai Hospital outpatient gynecology clinics. Recruitment, consent, randomization, procedure and post-procedure survey will occur during the same visit.

Two separate randomization schedules will be generated, one for IUD insertion and one for endometrial biopsy, using computer-generated sequences prepared by an independent study coordinator. Randomization will occur via consecutively numbered, opaque, sealed envelopes containing the allocation code. Each participant will be randomly assigned to one of two arms: 1) Intervention (5g of 2.5% lidocaine/2.5% prilocaine cream in a pre-filled vaginal applicator). 2) Placebo (5g of VersaPro cream in a pre-filled vaginal applicator). The research coordinator (who is not involved in direct patient care) will open the allocation envelopes without the presence of the participant or the provider. They will prepare the self-applicators with either 5g of 2.5% lidocaine/2.5% prilocaine cream or 5g of placebo cream to maintain blinding. The patient will be instructed how to self-administer the applicator and dispense all 5g of cream into their vagina in the washroom. A patient education sheet highlighting instructions will also be provided. The patient will wait 10-15 mins and then will be brought into a room for the procedure. Once the procedure begins, pain scores at key intervals will be patient-reported by a 10-point numeric rating scale (NRS) and recorded by a research assistant. A global pain score using a 100mm visual analogue scale (VAS) at 5-minutes following the procedure will also be collected. Post-procedure, there will be a provider-completed questionnaire and a patient satisfaction questionnaire. The provider questionnaire will help describe details of the procedure and complications. The patient satisfaction questionnaire will describe feasibility, acceptability and satisfaction with self-administered cream. The primary outcome will be global pain score at 5-minutes post-procedure, which will be patient-reported by the 100 mm VAS. Secondary outcomes include: pain at specific pain points using a 10-point NRA (baseline after insertion of cream, after insertion of speculum, tenaculum placement, sounding of uterus (IUD only), IUD insertion or endometrial biopsy, and 1-minute post-procedure). Other secondary outcomes include pre- and post-procedure anxiety, procedural characteristics (uterine size, position, IUD type, number of biopsy passes), immediate complication and side effects, procedural difficulty, length of time to complete the procedure, and patient reported feasibility, acceptability, perceived control over pain and satisfaction.

Tipo di studio

Interventistico

Iscrizione (Stimato)

174

Fase

  • Non applicabile

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Contatto studio

Luoghi di studio

  • Canada
    • Ontario
      • Toronto, Ontario, Canada, M5G1Z5
        • Ontario Power Generation Building
        • Contatto:
        • Investigatore principale:
          • Mara Sobel, MD
        • Sub-investigatore:
          • Praniya Elangainesan, MD

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

  • Adulto
  • Adulto più anziano

Accetta volontari sani

Sì

Descrizione

Inclusion Criteria:

  • Any participant ≥18 years presenting for an IUD insertion or endometrial biopsy
  • English speaking participants only

Exclusion Criteria:

  • Use of pain medication that is not an NSAID or acetaminophen (e.g. opioids, benzodiazepines) within past 24 hours
  • Misoprostol administration within 24 hours
  • Confirmed pregnancy
  • Any diagnosed chronic pain syndromes (e.g. fibromyalgia, vaginismus)
  • Allergy to lidocaine, prilocaine or any other "-caine" type anesthetics or any of the non-medicinal ingredients found in the product
  • Patients with congenital or idiopathic methemoglobinemia
  • Patients with glucose-6-phosphate dehydrogenase deficiency
  • Severe kidney or liver disease
  • Previous history of local anesthetic systemic toxicity (LAST)
  • Baseline vital signs of systolic blood pressure <100, diastolic blood pressure <60 and/or pulse <60.
  • Previous unsuccessful office attempt of IUD insertion or endometrial biopsy by the same practitioner (note of clarification: previous unsuccessful IUD insertion or biopsy attempt by a different practitioner will still be eligible)
  • Active atopic dermatitis or skin involving vulva, vagina and/or cervix.

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Altro
  • Assegnazione: Randomizzato
  • Modello interventistico: Assegnazione parallela
  • Mascheramento: Doppio

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Sperimentale: Medicated cream
5g of 2.5% lidocaine/2.5% prilocaine topical cream administered with vaginal self-applicator
Droga: 2.5% lidocaine/2.5% prilocaine topical cream
5g of 2.5% lidocaine/2.5% prilocaine topical cream administered by participant by vaginal self-applicator
Comparatore placebo: Placebo cream
5g of placebo VersaPro topical cream administered with vaginal self-applicator
Altro: VersaPro Cream Base for Compounding
5g of VersaPro cream administered by participant by vaginal self-applicator

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Global pain score
Lasso di tempo: Completed by patient 5-minutes post procedure.
Patient-reported pain measured using the 100-mm Visual Analogue Scale (VAS) 5 minutes following the procedure (endometrial biopsy or IUD insertion). The VAS ranges from 0 mm (no pain) to 100 mm (worst pain imaginable), with higher scores indicating greater pain (a worse outcome).
Completed by patient 5-minutes post procedure.

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Pain scores at specific pain points during procedure
Lasso di tempo: During the procedure
Pain scores at specific pain points: baseline after insertion of cream, after insertion of the speculum, removal of excess cream with gauze, placement of tenaculum, sounding (IUD only), IUD insertion/endometrial biopsy, and 1-minute post-procedure, which will be patient-reported verbally during the procedure on a scale from 0 (i.e. no pain) to 10 (worst pain imaginable). When more than one biopsy pass is required, only pain after the first pass will be recorded.
During the procedure
Anxiety levels
Lasso di tempo: After application of the cream and waiting for 10 minutes but before starting the procedure as well as at 1-minute after the procedure.
Patient-reported anxiety before and after the procedure, measured using a 5-point Likert scale ranging from 1 (very anxious) to 5 (very calm). Higher scores indicate less anxiety (a better outcome).
After application of the cream and waiting for 10 minutes but before starting the procedure as well as at 1-minute after the procedure.
Immediate complications of endometrial biopsy and/or IUD insertion
Lasso di tempo: Completed by the provider immediately after the procedure (within 30 mins post procedure).
Provider-reported immediate complications associated with the endometrial biopsy and/or IUD insertion, including difficulty of procedure, vasovagal reaction, vital sign changes, or other procedure-related complications. This will be assessed by the presence or absence of specific procedure-related complications.
Completed by the provider immediately after the procedure (within 30 mins post procedure).
Difficulty of procedure
Lasso di tempo: Completed by the provider immediately after the procedure (within 30 mins post procedure).
The difficulty of the procedure will be assessed with a Likert scale from 1 (least difficult) to 5 (most difficulty), provider reported.
Completed by the provider immediately after the procedure (within 30 mins post procedure).
Length of time for procedure completion
Lasso di tempo: During the procedure
Time will be recorded via stopwatch
During the procedure
Patient-reported acceptability, feasibility, and satisfaction with vaginal cream self-administration
Lasso di tempo: Completed by the patient immediately after the procedure (within 30 mins post procedure).

Patient-reported acceptability and satisfaction with self-administration will be assessed using a study-specific questionnaire evaluating ease and comfort of self-administration, perceived control, satisfaction with pain control and the self-application process, and willingness to use self-administration for a future gynecologic procedure.

Ease of administration, comfort with self-administration, satisfaction with pain control, satisfaction with the self-application process, and likelihood of choosing self-administration again will each be assessed using 5-point Likert scales ranging from 1 to 5, with higher scores indicating greater ease, comfort, satisfaction, or likelihood of future use (a better outcome). Additional acceptability measures, including confidence in correct application, difficulty with application, perceived control, and willingness to choose the same pain-control method in the future, will be reported descriptively based on categorical responses (Yes/No/Unsure)
Completed by the patient immediately after the procedure (within 30 mins post procedure).

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

Mount Sinai Hospital, Canada

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Stimato)

30 luglio 2026

Completamento primario (Stimato)

30 giugno 2027

Completamento dello studio (Stimato)

31 dicembre 2027

Date di iscrizione allo studio

Primo inviato

5 agosto 2026

Primo inviato che soddisfa i criteri di controllo qualità

11 agosto 2026

Primo Inserito (Effettivo)

17 agosto 2026

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

17 agosto 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

11 agosto 2026

Ultimo verificato

1 agosto 2026

Maggiori informazioni

Termini relativi a questo studio

Parole chiave

Termini MeSH pertinenti aggiuntivi

Altri numeri di identificazione dello studio

  • REB # 1630

Piano per i dati dei singoli partecipanti (IPD)

Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?

NO

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

No

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

prodotto fabbricato ed esportato dagli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .

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