Balloon trick during heart attack may cut death risk
NCT ID NCT03787745
First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study tests a special balloon procedure called ischemic postconditioning in 1800 people having a heart attack. After opening the blocked artery, doctors briefly inflate and deflate a balloon four times to see if it reduces heart damage. The goal is to lower the chance of heart failure or death.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- ischemic postconditioning (a balloon procedure during heart attack treatment)
- What this could lead to
- If it works, this could reduce the risk of heart failure and death after a heart attack.
- What could go wrong
- This is an early-stage trial with no phase, and the procedure is experimental. It may not improve outcomes and could carry risks from the balloon inflation.
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
-
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
-
About 1,800 people
The number the study aims to enrol. It can still change while the study runs.
- Started
-
Feb 2019
- Expected to finish
-
Jan 2033
An estimate. End dates often move.
- Lead sponsor
-
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
-
18 years and older
- Sex
-
Anyone
- Healthy volunteers
-
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: * Age ≥18 years * Acute onset of chest pain with \< 12 hours duration * STEMI as characterized by 2 mm ST elevation in 2 or more V1 through V4 leads or presumed new left bundle branch block with minimum of 1 mm concordant ST elevation or 1 mV ST-segment elevation in the limb lead (II, III and aVF, I, aVL) and V4-V6 or ST depression in 2 or more V1 through V4 leads indicating posterior AMI. * TIMI flow 0-1 in infarct related artery Exclusion Criteria: * Potential pregnancy * Refusal to participate * OHCA without subsequent consciousness despite ROSC * Thrombectomy considered unavoidable
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for ST-segment elevation myocardial infarction are added.
Genom att skicka in godkänner du våra Användarvillkor
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.
-
The places running it
1 site. The list below names each one and where it is.
-
The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
-
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
-
The Heart Center, Rigshospitalet, University of Copenhagen
RECRUITINGCopenhagen, 2100, Denmark
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Can a common supplement shield the heart from reperfusion injury?
- Can immune cells predict how well the heart heals after an attack?
- Drinking water may shield kidneys during emergency heart procedures
- When is the best time to fix other blocked arteries after a heart attack?
- Marathon runners and heart patients put a new troponin test to the ultimate challenge
- Timing of additional artery opening after heart attack could save lives