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ContraceptionEPICNCT06960317

Empathy Through Pain Control: Lidocaine Paracervical Block for IUD Placements

A study testing Buffered Lidocaine, Unbuffered lidocaine and Xylocaine jelly 2% in people with Contraception and Pain, Acute, run by University of California, San Diego at 1 site in United States.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

The goal of this research study is to learn more about how different uses of a numbing medication might affect pain levels while getting an IUD placed. The investigators are also studying participants opinions of their clinicians' empathy. Read more about this study

Who is it for?
Ages 18 to 50 years, women onlyHealthy volunteers can take part
Conditions the study is for
Contraception, Pain, Acute, Anesthesia, Local
What is being tested?
Buffered Lidocaine, Unbuffered lidocaine and Xylocaine jelly 2%
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
204 participants
Where
1 siteUnited States
Study dates
4 Jun 2025to 30 Jun 2028
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 50 years
  • Women only
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Ability to provide informed consent
  • Women IUD placement for contraception or heavy menstrual bleeding
  • Ages 18-50
  • English-speaking
  • Participants must not have a past medical history of substance use disorders, pain disorders, use of prescription pain medications or are found to be pregnant

Who cannot join

  • No history of vaginal delivery
  • Current use of prescription pain medication prior to procedure. Over-the-counter medications such as those containing ibuprofen, aspirin, acetaminophen, or naproxen are allowed.
  • Diagnosed chronic pain condition
  • Current pregnancy
  • Known allergic reactions to components of the local anesthetic
  • History of an IUD placement
  • Current substance use or history of substance use
  • Known contraindications to IUD, such as unexplained vaginal bleeding

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Marisa Hildebrand, MPH contact

(858) 657-8745

mchildeb@health.ucsd.edu

United States1 site, 1 recruiting
  • University of California, San Diego

    La Jolla, California, 92093

    Marisa Hildebrand, MPH, familyplanningresearch@ucsd.edu

    Sheila Mody, MD, MPH

    Recruiting

Other trials in United States

About this study

Official title: Expanding the Use of Paracervical Block for IUD Placements and Adding a Compassionate Care Assessment

The goal of this research study is to learn more about how different uses of a numbing medication might affect pain levels while getting an IUD placed. The investigators are also studying participants opinions of their clinicians' empathy.

The investigators are inviting patients who arrive at their clinic visit seeking an IUD.

Usually, at University of California, San Diego (UCSD), for patients who have never delivered a baby, clinicians use a buffered paracervical block for before IUD placement. The purpose of this research study is to investigate whether a "buffered" (2 cc of sodium bicarbonate, 18 cc of 1% lidocaine) paracervical block (numbing medication given on both sides of the cervix) is effective in reducing pain during IUD placement in individuals with prior C-sections, the difference between buffered and unbuffered for nulliparous patients, and whether a medicated gel reduces pain with the paracervical block.

Read the detailed description

Lidocaine is a drug that has been approved by the Food and Drug Administration (FDA). Sodium bicarbonate is an additive that buffers the acidity of lidocaine. The combination of the two is safe and effective as a paracervical block for pain relief in various OBGYN procedures. At UCSD and other places, it is not currently standard practice for people with prior deliveries birth to receive a paracervical block prior to IUD placement.

Participants who take part in this study, may receive an injection of buffered lidocaine (2 cc of sodium bicarbonate, 18 cc of 1% lidocaine), an injection of unbuffered block, and/or lidocaine gel.

Throughout the local anesthetic and intrauterine device (IUD) placement procedure, research team members will present participants with questionnaires to complete to assess participants' pain, participants' satisfaction with the procedure, and how much empathy participants feel the clinician has shown.

Being tested
Buffered Lidocaine, Sham Comparator, Unbuffered lidocaine, Xylocaine jelly 2%, Surgilube
Medical subject headings
Acute Pain

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Buffered LidocaineDrug

    To determine if a 20 cc buffered (2 cc of sodium bicarbonate, 18 cc of 1% lidocaine) lidocaine paracervical block decreases pain with IUD placement

  • Sham ComparatorOther

    None - capped needle will not be injected nor will it contain any medication.

  • Unbuffered lidocaineDrug

    To determine if a 20 cc unbuffered (1% lidocaine) lidocaine paracervical block decreases pain with IUD placement

  • Xylocaine jelly 2%Drug

    To determine if a Xylocaine jelly (2% infused lidocaine) decreases pain with paracervical block

  • SurgilubeDrug

    To determine if a placebo gel is inferior to lidocaine gel for pain with paracervical block

Study groups in NCT06960317
Study groupRoleWhat they receive
1a: Buffered lidocaine paracervical blockExperimentalTreatment group: will receive a 20-mL buffered (2 cc of sodium bicarbonate, 18 cc of 1% lidocaine) paracervical block administered before IUD placement. They will also receive 2 cc of buffered 1% lidocaine at the top of the cervix where the clinician places a tenaculum.
Receives: Drug: Buffered Lidocaine
1b: Capped needleSham comparatorSham group: will receive a capped needle without any medication administered as paracervical block before IUD placement. They will receive 2 cc of buffered 1% lidocaine at the top of the cervix where the clinician places a tenaculum.
Receives: Other: Sham Comparator
2a: Buffered lidocaine paracervical blockExperimentalTreatment group: will receive a 20-mL buffered (2 cc of sodium bicarbonate, 18 cc of 1% lidocaine) paracervical block administered before IUD placement. They will also receive 2 cc of buffered 1% lidocaine at the top of the cervix where the clinician places a tenaculum.
Receives: Drug: Buffered Lidocaine
2b: Unbuffered lidocaine paracervical blockActive comparatorActive comparator group: will receive a 20-mL unbuffered (1% lidocaine) paracervical block administered before IUD placement. They will also receive 2 cc of buffered 1% lidocaine at the top of the cervix where the clinician places a tenaculum.
Receives: Drug: Unbuffered lidocaine
3a: Medicated gelExperimentalTreatment group: will receive lidocaine-infused gel prior to administration of paracervical block.
Receives: Drug: Xylocaine jelly 2%
3b: Non-medicated gelPlacebo comparatorPlacebo group: will receive a non-medicated gel prior to administration of paracervical block.
Receives: Drug: Surgilube

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Pain scores during IUD placement procedure

    Does buffered 1% lidocaine paracervical block decrease pain during IUD. placement procedures. Pain will be measured on a 10-cm Visual Analog Scale (VAS) with score points ranging from 0-10, where 0 means "No pain" and 10 means "Worst pain possible."

    Measured: From speculum placement to 5 minutes post-procedure

Secondary outcomes (1)
  1. Patient perceptions of clinician empathy

    What is the relationship between pain and feelings about clinician empathy. Empathy will be measured through answers to the 10-question Consultation and Relational Empathy (CARE) Measure. Each question is answered by a 5-point scale of how well the patient believes their clinician to be at various types of empathetic gestures, where 1 equals "poor" and 5 equals "excellent."

    Measured: From pre-procedure baseline to 5 minutes post-procedure

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted7 May 2025
  2. Study start4 Jun 2025
  3. Primary completion30 Jun 2027 (estimated)
  4. Study completion30 Jun 2028 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
6-armed single-blind randomized controlled
Masking
Single blind
Who is masked
Participant
Enrolment
204 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06960317
Sponsor's protocol ID
812390
Acronym
EPIC
Status last verified
Jun 2025
First submitted
16 Apr 2025
Last updated
13 Jun 2025
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Chin J, Kaneshiro B, Elia J, Raidoo S, Savala M, Soon R. Buffered lidocaine for paracervical blocks in first-trimester abortions: a randomized controlled trial. Contracept X. 2020 Oct 18;2:100044. doi: 10.1016/j.conx.2020.100044. eCollection 2020.

    PubMed 33196038
  • Azizkhani R, Forghani M, Maghami-Mehr A, Masomi B. The effects of injections of warmed bicarbonate-buffered Lidocaine as a painkiller for patients with trauma. J Inj Violence Res. 2015 Jul;7(2):87-8. doi: 10.5249/jivr.v7i2.523. Epub 2013 Dec 12. No abstract available.

    PubMed 24879075
  • Mody SK, Farala JP, Jimenez B, Nishikawa M, Ngo LL. Paracervical Block for Intrauterine Device Placement Among Nulliparous Women: A Randomized Controlled Trial. Obstet Gynecol. 2018 Sep;132(3):575-582. doi: 10.1097/AOG.0000000000002790.

    PubMed 30095776
  • Welch MN, Czyz CN, Kalwerisky K, Holck DE, Mihora LD. Double-blind, bilateral pain comparison with simultaneous injection of 2% lidocaine versus buffered 2% lidocaine for periocular anesthesia. Ophthalmology. 2012 Oct;119(10):2048-52. doi: 10.1016/j.ophtha.2012.05.029. Epub 2012 Jul 6.

    PubMed 22771049
  • Narvaez J, Wessels I, Bacon G, Chin VR, Baqai WK, Zimmerman GJ. Prospective randomized evaluation of short-term complications when using buffered or unbuffered lidocaine 1% with epinephrine for blepharoplasty surgery. Ophthalmic Plast Reconstr Surg. 2010 Jan-Feb;26(1):33-5. doi: 10.1097/IOP.0b013e3181b80c13.

    PubMed 20090482
  • Hobeich P, Simon S, Schneiderman E, He J. A prospective, randomized, double-blind comparison of the injection pain and anesthetic onset of 2% lidocaine with 1:100,000 epinephrine buffered with 5% and 10% sodium bicarbonate in maxillary infiltrations. J Endod. 2013 May;39(5):597-9. doi: 10.1016/j.joen.2013.01.008. Epub 2013 Mar 20.

    PubMed 23611375
  • Harreld TK, Fowler S, Drum M, Reader A, Nusstein J, Beck M. Efficacy of a Buffered 4% Lidocaine Formulation for Incision and Drainage: A Prospective, Randomized, Double-blind Study. J Endod. 2015 Oct;41(10):1583-8. doi: 10.1016/j.joen.2015.06.017. Epub 2015 Aug 4.

    PubMed 26253800
  • Maguire K, Davis A, Rosario Tejeda L, Westhoff C. Intracervical lidocaine gel for intrauterine device insertion: a randomized controlled trial. Contraception. 2012 Sep;86(3):214-9. doi: 10.1016/j.contraception.2012.01.005. Epub 2012 Feb 9.

    PubMed 22325115
  • Allen RH, Raker C, Goyal V. Higher dose cervical 2% lidocaine gel for IUD insertion: a randomized controlled trial. Contraception. 2013 Dec;88(6):730-6. doi: 10.1016/j.contraception.2013.07.009. Epub 2013 Aug 1.

    PubMed 24012096

Questions about this trial

What is this clinical trial studying?

A study testing Buffered Lidocaine, Unbuffered lidocaine and Xylocaine jelly 2% in people with Contraception and Pain, Acute, run by University of California, San Diego at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 8 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 13 Jun 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Marisa Hildebrand, MPH ((858) 657-8745, mchildeb@health.ucsd.edu), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Pain scores during IUD placement procedure (time frame: From speculum placement to 5 minutes post-procedure). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT06960317, which also lists 9 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 13 Jun 2025.

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