Timing of heart scans after arrest: does it matter?
NCT ID NCT04876222
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at 212 patients who woke up after a cardiac arrest outside the hospital. Researchers compared getting a heart angiogram right away versus waiting 12-24 hours. The goal was to see if immediate imaging reduces the risk of death, shock, or another cardiac arrest. The study was stopped early, so results are limited.
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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212 people
The number who actually took part.
- Started
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May 2021
- Finished
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Apr 2026
- 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 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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: * Witnessed Cardiac Arrest * ROSC * CAG possible within 120 minutes * Glasgow coma scale \>8 Exclusion Criteria: * Age \< 18 years * Obvious non-cardiac cause for the arrest * Terminal illness * STEMI
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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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Aalborg University Hospital
Aalborg, Denmark, Denmark
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Catharina Zeikenhuis
Eindhoven, 5623, Netherlands
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Christian Juhl Terkelsen
Aarhus, 8200, Denmark
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Department of cardiology, Aarhus University Hospital in Skejby
Aarhus, 8200, Denmark
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Odense University Hospital
Odense, Denmark, 5000, Denmark
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Radboud Universitair Medisch Centrum
Nijmegen, 6525, Netherlands
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Rigshospitalet
Copenhagen, Denmark, Denmark
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Other studies related to the condition(s) this trial covers.
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