Nudge tool aims to cut unnecessary CT scans for lung clots
NCT ID NCT07249385
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests a computer tool that gently reminds doctors when they are about to order a CT scan for a possible pulmonary embolism (a blood clot in the lung) against clinical guidelines. The tool only appears when the order may not be needed, giving doctors a chance to reconsider. About 440 healthcare providers across 10 emergency rooms will use the tool, and researchers will track whether it leads to more appropriate CT scan use.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Clinical decision support tool with behavioral nudges
- What this could lead to
- If it works, this could reduce unnecessary CT scans and radiation exposure for patients with suspected pulmonary embolism.
- What could go wrong
- This is an early-stage implementation study, not a treatment trial. The nudge may not change doctor behavior, or results may not apply to other hospitals.
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 440 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Feb 2026
An estimate. Start dates often move.
- Expected to finish
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Mar 2029
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 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: 1. 18 years of older 2. A provider (MD, NP, PA) ordering CTs for evaluation of PE in adult patients present at study site Emergency Department (i.e., Northwell Health - Feinstein Institute for Medical Research, Baylor College of Medicine and NYU Langone Health). Exclusion Criteria: 1\. A provider not present at the specified study sites.
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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
3 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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Baylor College of Medicine
Houston, Texas, 77030, United States
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NYU Langone Health
New York, New York, 10016, United States
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Northwell Health - Feinstein Institute for Medical Research
Manhasset, New York, 11030, United States
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Other studies related to the condition(s) this trial covers.
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