Could a simple TENS device ease IUD insertion pain?
NCT ID NCT06245655
First seen Jul 06, 2026 · Last updated Jul 07, 2026 · Updated 1 time
Summary
This trial investigates whether a transcutaneous electrical nerve stimulation (TENS) device can reduce pain during IUD insertion. About 99 women receiving an IUD will be randomly assigned to either an active TENS unit or a placebo device. Participants will rate their pain on a scale, and researchers will compare the two groups to see if TENS provides meaningful relief.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Transcutaneous Electrical Nerve Stimulation (TENS) device
- What this could lead to
- If effective, TENS could offer a low-cost, drug-free option to ease pain during IUD insertion.
- What could go wrong
- This is a small, early-stage trial, and results may not confirm benefit. Pain relief from TENS varies widely among individuals.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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99 people
The number who actually took part.
- Started
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Mar 2024
- Finished
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Apr 2025
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: In order to participate in the study, an individual must meet all the following criteria: * Presenting for IUD initiation during ambulatory care visits to the Mount Sinai Complex Family Planning service * Provision of signed and dated informed consent form for IUD Insertion * English speaking and age 18 or older * Opting for either LNG 52mg or copper T380A IUD * Stated willingness to comply with all study procedures Exclusion Criteria: * Contraindication to IUD initiation (i.e. pregnancy, current pelvic infection, distorted uterine anatomy) * Contraindication or allergy to ibuprofen * History of a chronic pain disorder * Recent opioid use in the previous 30 days * History of a cardiac arrhythmia * History of heart disease (i.e. atrial fibrillation, congestive heart failure) * Presence of an implantable device with an electrical discharge (i.e. pacemaker) * BMI \> 50 (class IV obesity) * History of TENS use * Planned pain intervention outside standard of care (i.e. paracervical block) OR pre-procedure use of non-standard pain medication (i.e. benzodiazepines, muscle relaxers, gabapentin, benadryl) * History of epilepsy
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Center for Women's Health and Midwifery
New Haven, Connecticut, 06519, United States
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Mount Sinai Beth Israel
New York, New York, 10003, United States
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Mount Sinai Hospital
New York, New York, 10029, United States
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Mount Sinai Union Square
New York, New York, 10003, United States
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Yale Family Planning Clinic
New Haven, Connecticut, 06519, United States
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