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New study tests nerve tricks for better sleep after mastectomy

NCT ID NCT07272954

Symptom relief Sponsor: Affiliated Hospital of Jiaxing University Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Sep 11, 2026 · Updated 1 time

Summary

This study looks at two ways to improve sleep after breast cancer surgery: a nerve block injection or a mild ear stimulation device. About 136 women will be randomly assigned to one of the two treatments. Their sleep will be tracked with a wrist monitor and questionnaires for the first few days after surgery, and they will be followed for 30 days to see if sleep problems develop.

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

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

About 136 people

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

Expected to start

Dec 2026

An estimate. Start dates often move.

Expected to finish

Dec 2029

An estimate. End dates often move.

Lead sponsor

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

18 to 80 years

Sex

Female participants only

Healthy volunteers

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * aged 18-80 years who underwent radical surgery for breast cancer * ASA I-III Exclusion Criteria: * 1\. Patients with coagulation dysfunction; * Patients with suspected regional infection leading to severe nerve damage in the affected limb; * Patients with congenital heart disease, coronary artery disease, myocardial infarction, severe cardiac conduction block, or those with implanted cardiac pacemakers; * Patients with severe neurological disorders such as cerebral infarction, cerebral hemorrhage, or stroke; * Patients with pain, lesions, infections, or unresolved external ear trauma in the area near the external ear; * Patients with severe mental illness or a history of substance abuse related to analgesics or psychiatric medications; * Patients with allergies to local anesthetics such as lidocaine or ropivacaine, as well as to general anesthetics; * Patients and their families who refuse surgical anesthesia and those unable to complete the survey questionnaire.

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Conditions

The condition(s) this trial relates to.

breast cancer sleep disorder sleep-wake disorder

As listed by the trial registrant

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

Sleep disorder (disorder)

How to take part

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

  1. 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 ↗

  2. 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.

More trials for these conditions

Other studies related to the condition(s) this trial covers.