Hair test reveals hidden stress link to sudden cardiac arrest
NCT ID NCT07285915
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looks at whether long-term stress, measured by cortisol levels in hair, is linked to cardiac arrest. Researchers will take a small hair sample from 136 patients who had a cardiac arrest or heart attack. The goal is to see if higher stress levels over the past three months are associated with worse outcomes. This is an observational study, so it does not test any treatment.
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 understand how chronic stress contributes to cardiac arrest and improve prevention strategies.
- What could go wrong
- This is an observational study, not a treatment trial. It only measures stress levels and does not test any intervention, so it cannot directly change patient outcomes.
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
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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 136 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jan 2026
- Expected to finish
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Oct 2027
An estimate. End dates often move.
- Lead sponsor
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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
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18 to 100 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.
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: * Cardiac arrest * Heart attack * 18 - 100 years Exclusion Criteria: * Disapproval patient´s relatives with the study * Chronical treatment with corticoids and antidepresives
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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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University Hospital Pilsen
RECRUITINGPilsen, Czech Republic, 30100, Czechia
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