New device could spot failed pain blocks during mastectomy
NCT ID NCT03832920
First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looked at 100 women having a mastectomy to see if a device called the Analgesia Nociception Index (ANI) can detect when a nerve block isn't working. The device measures pain signals during general anesthesia. If it works, doctors could adjust pain treatment right away, improving recovery.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
What this could lead to
If successful, this could help doctors quickly tell if a nerve block is working during breast surgery, leading to better pain control.
What could go wrong
This is a small, observational study, not a treatment trial. The device may not reliably detect block failure in all patients.
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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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
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Locations
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Institut de Cancérologie de Lorraine (ICL)
Vandœuvre-lès-Nancy, France