Blue spray may shield nerves during thyroid surgery
NCT ID NCT07395388
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested whether spraying a blue dye called methylene blue onto tissues during thyroid surgery helps surgeons better see and protect the nerve that controls voice and the glands that regulate calcium. 136 adults with benign thyroid nodules took part. The goal was to reduce nerve injury and calcium problems after surgery.
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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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136 people
The number who actually took part.
- Started
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Jan 2022
- Finished
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Jan 2026
- Lead sponsor
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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.
- Ages
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18 to 60 years
- 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.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * benign multinodular goiter scheduled for thyroidectomy. Exclusion Criteria: * Recurrent/metastatic disease * Preoperative vocal cord dysfunction * Coagulopathy * Methylene blue allergy * Hepatic/renal impairment
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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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Services Institute of Medical Sciences
Lahore, Punjab Province, 54000, Pakistan
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Other studies related to the condition(s) this trial covers.
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