Timing is everything: new study aims to find the best window to treat dangerous blood clots in the lungs
NCT ID NCT07436702
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study is observing 500 adults with severe pulmonary embolism (a dangerous blood clot in the lungs) to see if the timing of clot-busting treatments affects survival and complications. Researchers want to find the optimal time window to start treatment, similar to how heart attacks and strokes are treated. The goal is to improve outcomes by understanding when treatment is most effective.
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.
- Participants
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About 500 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Nov 2025
- Expected to finish
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Oct 2026
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.
Who is studied
Patients with a confirmed diagnosis of high-risk or intermediate-high-risk pulmonary embolism according to the 2019 European Society of Cardiology guidelines.
- 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.
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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 * Patients with a diagnosis of intermediate-high or high pulmonary embolism confirmed by computed tomography pulmonary angiography (CTPA), pulmonary angiography, or echocardiography (evidence of a floating thrombus in the right atrium or right ventricle, or proximal visualization of thrombus in the pulmonary artery). * Classified as high-risk or intermediate-high-risk according to the 2019 European Society of Cardiology guidelines. * Provision of informed consent for the processing of personal data. Exclusion Criteria: * Age \< 18 years * Patients in whom a diagnosis of acute high-risk or intermediate-high-risk pulmonary embolism has been excluded. * Inability to provide informed consent.
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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
7 sites. 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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IRCCS Policlinico San Matteo
RECRUITINGPavia, Pavia, 27100, Italy
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UO Unità di Cure Intensive Cardiologiche e Cardiologia 1, Ospedale Niguarda, Milano
RECRUITINGMilan, Milano, 20162, Italy
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UO di Cardiologia 1, Azienda Ospedaliero Universitaria Pisana, Pisa, Italia
RECRUITINGPisa, Pisa, 56126, Italy
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UO di Cardiologia, Azienda Ospedaliera Ordine Mauriziano di Torino
RECRUITINGTorino, Torino, 10128, Italy
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UO di Sezione di Medicina Interna e Cardiovascolare, Ospedale Santa Maria della Misericordia, Perugia, Italia
RECRUITINGPerugia, Perugia, 06129, Italy
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UOC di Cardiologia, Ospedali Riuniti Padova Sud, Monselice, Italia
RECRUITINGMonselice, Padova, 35043, Italy
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UOC di Cardiologia, Ospedali dell'Ovest Vicentino, Arzignano, IItalia
RECRUITINGArzignano, Vicenza, 36071, Italy
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