Correlation between fractional flow reserve and myocardial viability as assessed by cardiac magnetic resonance imaging in late-presenting asymptomatic STEMI patients

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

TCTR

Registry ID

TCTR20190306006

Enrollment

Registered

2019-03-06

Start date

2017-12-20

Completion date

Unknown

Last updated

2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

late-presenting asymptomatic STEMI patients who present after 48 hours of symptom late-presenting STEMI FFR MRI Viability Revascularization

Interventions

Revascularization to IRA will be performed if FFR â‰¤0.78

Treatment

FFR â‰¤0.78

Eligibility

Sex/Gender

All

Age

18 Years to 80 Years

Inclusion criteria

Inclusion criteria: 1.Age >18 years 2.All patients between 18-80 years presenting with STEMI who -were not treated within 48 hours after the onset of symptom to 14 days and did not have post MI angina with stable clinical more than 4 days -Failed thrombolytic therapy and did not undergo pharmacoinvasive in 24 hours with stable clinical more than 4 days 3.Angiographic inclusion criteria -At least 50% to 90% diameter stenosis in an IRA on visual estimation of baseline angiography and judged feasible for treatment with PCI by the operator. 4.Willing to participate and able to understand, read and sign the informed consent document before the planned procedure

Exclusion criteria

Exclusion criteria: 1.Total occlusion of IRA 2.Pregnancy or planning to become pregnant any time after enrolment into this study. 3.Left main stem disease (stenosis > 50%) 4.Known severe cardiac valve dysfunction that will require surgery in the follow-up period. 5.TIMI flow less than 2 of IRA artery. 6.Killip class III or IV at presentation 7.Patients who are actively participating in another drug or device investigational study, which have not completed the primary endpoint follow-up period. 8.Life expectancy of less than one year 9. Inability to tolerate Adenosine 10. Heavily calcified or tortuous vessel where inability to cross the lesion with a pressure wire is expected. 11.Prior history of MI 12. Prior history of revascularization either PCI or CABG

Design outcomes

Primary

Measure	Time frame
FFR value Day 1 Cardiac MRI	—

Secondary

Measure	Time frame
Death 12 months Event death,Non-fatal Myocardial infarction (MI) 12 month Event non-fatal myocardial infarction,Delta FFR (post-pre) Day 1 Cardiac MRI,FFR measurement in late-presenting asymptomatic STEMI patients. Day 1 Cardiac revascularization,Unplanned revascularization 12 month Event unplanned revascularization	—

Countries

Thailand

Contacts

Public ContactPannipa Suwannasom

Faculty of Medicine, Chiang Mai University

pannipa.s@cmu.ac.th66899167893

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026