Sound waves during bypass surgery could save grafts
NCT ID NCT07485738
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study is testing a tool called Transit-Time Flow Measurement (TTFM) that uses sound waves during heart bypass surgery to check blood flow through the new blood vessels. The goal is to see if using this tool helps the grafts stay open longer. About 1242 adults having their first non-emergency bypass surgery will take part.
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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 1,242 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Mar 2026
- Expected to finish
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Mar 2032
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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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: 1. Age \>18 years 2. First-time, non-emergent isolated multivessel CABG through median sternotomy 3. Willing and able to provide written informed consent and comply with all study procedures, including QOL questionnaires Exclusion Criteria: 1. Reoperation 2. Emergency procedures 3. Combined CABG + other cardiac or non-cardiac surgery 4. Isolated single vessel CABG 5. Minimally invasive CABG 6. Inability to undergo coronary computed tomographic angiography (CCTA) 7. Unable to provide written informed consent or comply with all the study procedures.
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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
1 site. 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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Weill Cornell Medicine/NewYork Presbyterian Hospital
RECRUITINGNew York, New York, 10022, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Can ancient herbs speed up heart surgery recovery?
- Can a neck nerve block calm the Body's inflammatory storm after heart surgery?
- Can deeper anesthesia shield the heart during bypass surgery?
- Can a Blood-Vessel drug shield weak hearts during surgery?
- Can a daily pill keep a rare heart disease in check for the long haul?