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A simple pressure test before surgery might reveal your risk of chronic pain

NCT ID NCT04014829

Knowledge-focused Sponsor: KK Women's and Children's Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Aug 14, 2026 · Last updated Aug 14, 2026

Summary

This study follows 436 women undergoing hysterectomy for non-cancerous reasons to see if certain pre-surgery assessments can predict who will develop chronic pain lasting months after the operation. Researchers measure pain sensitivity using a pressure device on the shoulders, and use questionnaires to gauge central sensitization, fear-avoidance behavior, and anxiety. The goal is to identify reliable, easy-to-use factors that could flag women at higher risk, potentially allowing for earlier and more personalized pain management.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Pain-pressure threshold testing and questionnaires (Central Sensitization Inventory, Fear-Avoidance Components Scale, anxiety assessments)
What this could lead to
If certain pre-surgery measures reliably predict chronic pain, doctors could identify high-risk patients and tailor pain management to prevent long-term suffering.
What could go wrong
This is an observational study, so it can only find associations, not prove cause and effect. The findings may not apply to all hysterectomy patients or lead to a proven prevention strategy.

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.

Participants

About 436 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jul 2019

Expected to finish

Dec 2027

An estimate. End dates often move.

Lead sponsor

A government agency

The lead sponsor is a government body.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Women scheduled for elective abdominal or laparoscopic hysterectomy at KK Women's and Children's Hospital, Singapore.

Ages

21 to 80 years

Sex

Female participants only

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show 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: * Age 21 to 80 years old * American Society of Anesthesiologists Physical Scale (ASA) I to III * Benign gynaecological indications for hysterectomy * Elective abdominal or laparoscopic hysterectomy Exclusion Criteria: * Vaginal hysterectomy * Uterine prolapse, endometriosis, malignant disease, or pelvic pain as main indication for surgery * History of drug dependence or recreational drug use * History of chronic pain syndrome * Current chronic daily treatment with corticosteroids, excluding inhaled steroids * Allergy to study drugs * Major heart surgery * Heart transplant * Pacemaker inserted * Baseline non-sinus cardiac rhythm

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Conditions

The condition(s) this trial relates to.

Chronic Pain chronic pain syndrome mixed anxiety and depressive disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Anxiety depression Central sensitisation Chronic pain Hysterectomy

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • KK Women's and Children's Hospital

    RECRUITING

    Singapore, 229899, Singapore

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