ClinicalTrials.gg
Not yet recruitingNCT06613191CAPTTUpdated Sep 25, 2024

Colonoscopy and Antiplatelet Therapy Trial

A Phase 4 interventional study of Aspirin and P2Y12 inhibitor (clopidogrel, ticagrelor, prasugrel) in Coronary Arterial Disease (CAD) and Peripheral Vascular Disease, sponsored by Ochsner Health System. Not yet recruiting at 1 site in United States. Open to participants aged 45 Years and older. Per ClinicalTrials.gov, last updated 2024-09-25.

Sponsored by Ochsner Health System · Phase 4, Interventional, and Supportive care

From the registry’s dates

  • Primary completion was expected by Dec 2025, 10 months ago, but the record still lists the study as not yet recruiting.
Phase
Phase 4
Study type
Interventional
Enrollment
100
Allocation
Randomized
Ages
45 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 187 studies in Peripheral Vascular Diseases with a site in United States — 18 open to participants now, 23 under way, 2 of them phase 3. Peripheral Vascular Diseases · United States.

Planned enrollment
71st of 158
100 · median 82
Started
2024
with 10 others
Phase 4
11 of 187
2 open now
Primary completion
2025-12
later than 3 of 22 live
Registered
180th of 187
by date

Among the 187 studies in Peripheral Vascular Diseases with a site in United States, this one is the 71st largest by planned enrollment of the 158 interventional ones that give a count, is one of 11 that started in 2024, is one of 11 in phase 4, reaches primary completion later than 3 of the 22 other live ones, and was the 180th registered.

Peripheral Vascular Diseases

443 studies on the registry are indexed under Peripheral Vascular Diseases; 44 are open to participants now.

This study's planned enrollment of 100 is above the median of 80 across 327 interventional studies indexed under Peripheral Vascular Diseases.

Browse Peripheral Vascular Diseases studies →

Open to participants now

18 of the 187 studies in Peripheral Vascular Diseases with a site in United States are open now.

All 18 open studies →

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

Who these studies take

Of the 32 Peripheral Vascular Diseases studies recruiting now, 19 (59%) set no upper age limit and 4 (13%) stop at 75 or younger; 2 take children under 18; 4 take healthy volunteers.

This study: 45 Years and older · all sexes · no healthy volunteers.

The full table on the hub →
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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 187 studies in Peripheral Vascular Diseases with a site in United States, or all of them as a file.
02

Study summary

Patients on dual antiplatelet therapy )aspirin plus a P2Y12 inhibitor [clopidogrel, prasugrel, or ticagrelor]) undergoing screening or surveilance colonoscopy are at increased risk for bleeding from the procedure. Patients are ussually asked to stop the P2Y12 inhibitor for the procedure. Currently, recommendation is that patients only on a P2Y12 inhibitor be changes to aspirin for the procedure. This pilot study will evaluate if there is a large difference in bleeding between patients only taking aspirin compared with patients only taking a P2Y12 inhibitor. Patinets who participate will randomly be randomly asked to stop either aspirin or the P2Y12 inhibitor 1 week before the procedure. Periprocedural bleeding and bleeding after the procedure for iup to 30 days.

03

Conditions studied

  • Coronary Arterial Disease (CAD)
  • Peripheral Vascular Disease

Keywords

  • Colonoscopy
  • Antiplatelet therapy
04

Who can participate

Ages eligible
45 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

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

  1. Age ≥ 45 years
  2. Stable patients defined as having Angina CCS (Canadian Cardiovascular Society) class 1-3 and/or Heart Failure class 1-2 without a change in guideline directed anti-ischemic or heart failure medications within 30 days prior to randomization.
  3. Patients with cardiovascular disease defined as coronary artery disease, cerebrovascular disease or peripheral vascular disease taking DAPT (defined as aspirin plus a P2Y12 inhibitor). The decision to use DAPT in this patient will be made by the managing physician(s) before recruitment for this study. Consider replacing last statement with "As directed by their physician prior to recruitment into this study"
  4. Scheduled for elective screening or surveillance outpatient colonoscopy

Exclusion criteria

Exclusion Criteria:

  1. Coronary intervention (PCI or CABG) less than 90 days prior to randomization
  2. ACS event in less than 90 days prior to randomization
  3. (TIA) and/or stroke event in less than 90 days prior to randomization
  4. Acute limb ischemia and/or amputation in less than 90 days prior to randomization
  5. Post cardiac valve replacement (either percutaneous or surgical)
  6. High cardiovascular risk:

    1. Patients with CCS class 4 angina
    2. Hospitalized with ACS within 1 month prior to randomization
    3. Patients undergoing PCI or CABG within the 3 months prior to randomization
  7. Patients on left ventricular assist device (LVAD) or post cardiac transplantation
  8. Patients with class 3 or 4 heart failure
  9. Any condition requiring treatment requires chronic use of an anticoagulant.
  10. Chronic kidney disease Stage 5 (with or without dialysis)
  11. Liver cirrhosis with count \< 50,000/ mm3 and/or >1.4
  12. Hematocrit \< 30% and \< 10 mg/dL
  13. Emergent or inpatient Colonoscopy
Terms in these criteria, in plain language(5)

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.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

TIA (transient ischaemic attack)

A “mini-stroke”: temporary stroke-like symptoms caused by reduced blood flow to part of the brain, spinal cord or eye, without signs of a new stroke on a scan.

Stroke symptoms need emergency care at once, even if they go away.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

INR, PT and aPTT (clotting tests)

Blood tests of how long blood takes to clot. The INR is the prothrombin time (PT) put on a common scale; about 1 is usual for someone not taking a blood thinner.

Criteria often make an exception for people on a blood thinner such as warfarin, whose INR is raised on purpose.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

05

Study design

Phase
Phase 4
Primary purpose
Supportive care
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Care provider, Investigator)
Enrollment
100 participants (estimated)

Study arms

  • Active comparator
    Aspirin only

    Participants receiving aspirin only at time of the colonoscopy

    Drug: Aspirin

  • Experimental
    P2Y12 inhibitor only

    Participants receiving a P2Y12 inhibitor only at time of the colonoscopy

    Drug: P2Y12 inhibitor (clopidogrel, ticagrelor, prasugrel)

Interventions

06

What researchers measure

Primary outcomes

  1. Primary safety endpont

    Composite of: * Use of endoscopic clips post-polypectomy to control persistent intraprocedural bleeding (defined as bleeding persisting for greater than 2 minutes), * Major delayed bleeding, which was symptomatically or clinically overt and associated with an unplanned admission or readmission to hospital for rectal bleeding, * Bleeding that directly contributed to death, * Minor bleeding defined as any sign or symptom of peri-rectal bleeding that did not fit the above criteria, * Need for further intervention to control bleeding such as endoscopic, surgical, or radiological intervention, or * Bleeding causes a fall in hemoglobin ≥ 2 g/dL or leads to transfusion of whole blood or red cells.

    Time frame: 7 days

07

Study locations

1 site
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Start is estimated for Oct 2024; primary completion for Dec 2025, 14 months later.

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

Registered
Sep 23, 2024
First posted
Sep 25, 2024
StartEst.
Oct 1, 2024
Primary completionEst.
Dec 31, 2025
CompletionEst.
Jun 30, 2026
Last update
Sep 25, 2024
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 Sep 25, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06613191
Lead sponsor
Ochsner Health System
Responsible party
Sponsor
First posted
Sep 25, 2024
Start date
Oct 1, 2024 (estimated)
Primary completion
Dec 31, 2025 (estimated)
Completion
Jun 30, 2026 (estimated)
Last update
Sep 25, 2024

Study contacts

Mark B Effron, MD
Contact
mark.effrob@ochsner.org
(504) 842-2421

Oversight

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

Not currently enrolling

This study is not yet recruiting, as verified in Sep 2024. You cannot join it, but the record below documents what was studied.

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Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

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Studies of the drug tested here: P2Y12 Inhibitor

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