Cool heads may save brains: new stroke trial tests simple cooling method
NCT ID NCT07526649
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether cooling the head (using a special cap) during emergency stroke treatment can reduce the amount of brain tissue that dies. About 182 adults having a major stroke and undergoing a clot-removal procedure will be randomly assigned to receive either standard care or standard care plus head cooling. The main goal is to see if cooling leads to smaller areas of brain damage on scans taken 24 hours later.
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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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About 182 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Apr 2026
An estimate. Start dates often move.
- Expected to finish
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Jun 2029
An estimate. End dates often move.
- 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 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: * Acute anterior circulation ischaemic stroke planned for endovascular thrombectomy * Age ≥18 years Exclusion Criteria: * Pre-stroke modified Rankin Scale score \>2 * Core body temperature \<35°C at admission * Uncontrolled hypertension (≥185/110 mmHg despite treatment in IVT-eligible patients) * Known contraindications to hypothermia (e.g., haemodynamic instability, symptomatic bradyarrhythmia, cryoglobulinaemia, sickle cell disease, cold agglutinins) * Vasospastic disorders (e.g., Raynaud's phenomenon) * Skin lesions preventing secure application of the cooling cap * Inability to participate in 90-day follow-up
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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Health New Zealand - Auckland
Grafton, Auckland, 1023, New Zealand
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Robot could let stroke patients rehab their hands at home without a therapist
- Moving patterns may help stroke survivors read faster
- Vibrating wearables put stroke walking to the test
- Can a kidney protein drug boost stroke recovery after clot removal?
- Robot plus electrical stimulation aims to rebuild arm movement after stroke
- Can a checklist and heart monitor stop repeat strokes?