ClinicalTrials.gg
Status unknownNCT03479593NS-CULPRITUpdated Mar 29, 2023

Culprit Lesions in NSTEMI With Multi Vessel Disease (NSTEMI-CULPRIT)

An observational study in NSTEMI - Non-ST Segment Elevation MI and Multi Vessel Coronary Artery Disease, sponsored by Rigshospitalet, Denmark. Status unknown at 1 site in Denmark. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-03-29.

Sponsored by Rigshospitalet, Denmark · Observational

The sponsor has not verified this record recently (last verified Mar 2023), so the status shown — last known as Recruiting — may be out of date.

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Study type
Observational
Model
Case-only
Time perspective
Prospective
Enrollment
100
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-13

Among 10 studies in Non-ST Elevated Myocardial Infarction with a site in Denmark — 1 open to participants now, 4 under way, none of them phase 3. Non-ST Elevated Myocardial Infarction · Denmark.

Started
2018
with 1 other
Observational
5 of 10
none open now
Registered
5th of 10
by date
Lead sponsor
3 of 10
Rigshospitalet, Denmark

Among the 10 studies in Non-ST Elevated Myocardial Infarction with a site in Denmark, this one is one of 2 that started in 2018, is one of 5 observational ones, and was the 5th registered.

Non-ST Elevated Myocardial Infarction

284 studies on the registry are indexed under Non-ST Elevated Myocardial Infarction; 52 are open to participants now.

Browse Non-ST Elevated Myocardial Infarction studies →

Open to participants now

1 of the 10 studies in Non-ST Elevated Myocardial Infarction with a site in Denmark is open now. Recruiting first, the newest first:

A study can be open while its sites in Denmark have not opened yet or have stopped. Only those recruiting at a site in Denmark →

Who these studies take

Of the 40 Non-ST Elevated Myocardial Infarction studies recruiting now, 34 (85%) set no upper age limit and 1 (3%) stops at 75 or younger; 4 take children under 18; 2 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

The full table on the hub →

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02

Study summary

Acute myocardial infarction owes to a plaque rupture resulting in total (STEMI) or partial occlusion (NSTEMI) of the coronary artery. In patients with a partial occlusion and multi vessel disease (MVD), identification of the lesion responsible for the current event (culprit) at the time of the examination (coronary angiogram, CAG) can be difficult.

Meanwhile, identification of the culprit lesion is vital to conduct proper treatment. Furthermore, treating an artery with no plaque rupture (non-culprit), imposes a small risk for complications, which may be fatal. Precise identification of the culprit lesion in NSTEMI patients with MVD remains unsettled

The purpose of this study is proper and precise identification of the culprit lesion in NSTEMI patients with MVD.

Read the detailed description

Background

Acute myocardial infarction owes to a plaque rupture resulting in total (STEMI) or partial occlusion (NSTEMI) of the coronary artery. Current guidelines in NSTEMI recommend an invasive coronary angiogram (CAG) and possible treatment with percutaneous intervention (PCI) within 2-72 hours. In NSTEMI patients and multi vessel disease (MVD), identification of the lesion responsible for the current event (culprit) at the time of the examination can be difficult.

Meanwhile, identification of the culprit lesion is vital to conduct proper treatment in order to restore blood flow to the myocardium. Furthermore, treating an artery with no plaque rupture (non-culprit), imposes a small risk for complications, which may be fatal. In addition, since the symptoms relate to the culprit lesion it is currently unclear whether all stenosis or only the culprit should be treated by PCI. Today precise identification of the culprit lesion in NSTEMI patients with MVD remains unsettled.

Purpose

The overall objective of this study is proper and precise identification of the culprit lesion in NSTEMI patients with MVD.

Methods

The study employs cardiac magnetic resonance (CMR), which allows detection of myocardium exposed to even brief periods of ischemia. Furthermore, Optical Coherence Tomography (OCT) which visualises the coronary artery lumen and wall. OCT allows for direct visualization of atherosclerotic plaques, presence of thrombus and atherosclerotic plaque ruptured that cannot be seen on a CAG alone.

Patients will have CMR performed prior to CAG. The PCI operator determines culprit based on CAG and ECG changes alone. OCT is subsequently performed on culprit lesion(s) and stenosis ≥ 50%.

Sample size calculation

Assuming the culprit lesion can be correctly identified with history/angiography/ECG in 95% of cases a positive predictive value >90% with 95% accuracy can be reached with 100 patients.

03

Conditions studied

  • NSTEMI - Non-ST Segment Elevation MI
  • Multi Vessel Coronary Artery Disease

Keywords

  • NSTEMI
  • Culprit
  • Cardiac magnetic resonance
  • Optical Coherence Tomography
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Eligible NSTEMI patients scheduled for CAG at one center

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patients > 18 years of age
  • NSTEMI ( changes and/or troponin/creatine kinase myocardial band (CK-MB) rise) within 48 hours after symptom debut.
  • Multivessel disease at CAG: More than one vessel with >50% stenosis.

Exclusion criteria

Exclusion Criteria:

  • Known intolerance of heparin or contrast medium.
  • Inability to understand information or to provide .
  • estimated (eGFR) \< 30 ml/min.
  • Other reasons for troponin rise not applicable to acute myocardial infarction.
  • Atrial fibrillation at admission.
  • Patients with for CMR will only have OCT performed.
  • Potential pregnancy
  • Unstable patients requiring acute CAG and PCI
Terms in these criteria, in plain language(4)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

ECG (electrocardiogram)

A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Observational model
Case-only
Time perspective
Prospective
Enrollment
100 participants (estimated)
Patient registry
No

Groups and cohorts

  • CMR and OCT in NSTEMI patients with MVD

    NSTEMI patients with multi vessel disease

    Diagnostic Test: CMR and OCT in NSTEMI patients with MVD

Interventions

  • Diagnostic testCMR and OCT in NSTEMI patients with MVD

    Lesions \>50% stenosis i patients with NSTEMI are examined by OCT. All patients will have CMR performed prior to angiography

06

What researchers measure

Primary outcomes

  1. Is the PCI operator capable of identifying the culprit lesion based on ECG-changes and CAG? (CMR is the golden standard)

    Correlation between operator identification of the culprit and CMR/OCT. The location of the culprit on CAG/ECG and OCT versus CMR will be evaluated by the chi2-test

    Time frame: Through study completion, an average of 1 year

Secondary outcomes

  1. Positive predictive value of PCI operator identification of culprit lesion with CAG and ECG.

    cross-tables will be used to calculate the positive predictive value Receiver-operating-characteristics will be used to compare the additional diagnostic value of OCT compared to CAG/ECG.

    Time frame: Through study completion, an average of 1 year

  2. Improvement in identification of culprit lesions evaluated by identification of an additional diagnostic value of OCT compared to CAG/ECG

    Receiver-operating-characteristics will be used to compare the additional diagnostic value of OCT compared to CAG/ECG. CMR is the golden standard.

    Time frame: Through study completion, an average of 1 year

07

Study locations

1 of 1 sites recruiting
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Jan 2018 to primary completion in Jan 2022, 47 months.

Of 54 non-industry observational studies under Non-ST Elevated Myocardial Infarction, half reached primary completion within 40 months of starting (the median), counting those still running; a quarter within 15 and three quarters within 86. This study's 47 months is above that.

Counting every sponsor, half of 76 studies reached it within 32 months; a quarter within 19 and three quarters within 49.

How these figures are worked out, and which studies are left out of them.

Registered
Nov 27, 2017
First posted
Mar 27, 2018
StartActual
Jan 10, 2018
Primary completionActual
Jan 1, 2022
CompletionEst.
Jan 1, 2024
Last update
Mar 29, 2023
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Mar 29, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03479593
Responsible party
Thomas Engstrom (Professor, Rigshospitalet, Denmark) — Principal investigator
First posted
Mar 27, 2018
Start date
Jan 10, 2018
Primary completion
Jan 1, 2022
Completion
Jan 1, 2024 (estimated)
Last update
Mar 29, 2023

Study contacts

Kathrine Ekström, MD
Contact
kathrine.ekstroem.01@regionh.dk
+4535452295
Thomas Engstrøm, DMSCi, PhD
Contact
thomas.engstroem@regionh.dk
+4535458444
Thomas Engstrøm, DMSCi, PhD
principal investigator · Rigshospitalet, University of Copenhagen

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Mar 2023. You cannot join it, but the record below documents what was studied.

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