Understanding why thrombolysis fails in heart attack patients
Official title: Predictors of Failed Thrombolysis in Acute ST-segment Elevation Myocardial Infarction
Run by Oslo University Hospital · NCT05347732 · Data updated 2026-11-12
This study is trying to find out why some heart attack patients don't respond to a specific clot-busting treatment so that doctors can improve how they treat these patients in the future.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 200 (estimated) |
| Sponsor | Oslo University Hospital Academic / other |
| Locations | 1 site (Oslo) |
| Status | Recruiting |
| Started | April 25, 2022 |
| Main results expected | April 25, 2025 |
| Study ends | January 3, 2035 |
| Registry record updated | March 23, 2023 |
| Trial ID | NCT05347732 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates for this study are STEMI patients over 18 years old who have received prehospital thrombolysis.
✕Probably not a fit
Patients who do not receive prehospital thrombolysis or are under 18 years old may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This observational study aims to identify the reasons behind the failure of thrombolytic treatment with tissue-plasminogen activator (t-PA) in patients experiencing acute ST-segment elevation myocardial infarction (STEMI). It will involve 200 STEMI patients who receive prehospital thrombolysis at Oslo University Hospital Ullevål. Blood samples will be collected upon hospital arrival to analyze biomarkers related to coagulation, fibrinolysis, and inflammation. The study will compare these biomarker levels between patients who experience successful and failed thrombolysis to improve risk stratification and treatment outcomes.
Why it matters
Potential benefit: If successful, this study could lead to better prediction of thrombolysis success, potentially improving treatment strategies for STEMI patients.
How similar studies have gone: While there have been studies on thrombolysis, this specific approach focusing on biomarkers in the context of STEMI is relatively novel.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: STEMI patients \> 18 years given prehospital thrombolysis. Exclusion Criteria: None.
Where it's running
-
Oslo University Hospital
Oslo, Norway Recruiting
Study contacts
- Study coordinator: Ragnhild Helseth, MD PhD
- Email: ramhel@ous-hf.no
- Phone: +47 97 14 95 18
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Noninvasive Venous Stasis to Help Reperfuse the Heart in STEMI
This study tests whether briefly restricting venous return with a cuff before the usual heart attack treatment helps restore blood flow on its own.
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Sustained thrombectomy plus PCI versus PCI alone in high thrombus burden STEMI
This trial tests whether adding sustained mechanical thrombectomy to PCI helps patients with STEMI and large clot burden, compared to PCI alone.
-
Antithrombotic options for acute coronary syndrome with coronary artery ectasia
This trial tests whether using rivaroxaban instead of the usual aspirin plus clopidogrel better prevents clot-related complications in adults hospitalized with acute coronary syndrome who have coronary artery ectasia.
-
Prehospital pulse-dose methylprednisolone for ST-elevation myocardial infarction
We will test if a single high dose of methylprednisolone given before hospital arrival can reduce heart muscle damage in adults having an ST-elevation heart attack.
-
Epicardial fat CT in patients after heart attack
This trial will test whether dapagliflozin or semaglutide reduces epicardial (around-the-heart) fat over 12 months in adults hospitalized with ST-elevation or non‑ST‑elevation myocardial infarction.
-
AI-guided early thrombolysis for people with STEMI
This trial tests whether an AI-assisted mobile app can help clinicians give earlier thrombolysis (plus planned PCI) for adults with STEMI who are unlikely to have the lesion opened within 120 minutes.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.