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CompletedNCT03400267ON-TIME 3Updated Feb 12, 2020

The Effect of Opioids on P2Y12 Receptor Inhibition in Patients With ST-Elevation Myocardial Infarction Who Are Pre-treated With Crushed Ticagrelor

A Phase 4 interventional study of Paracetamol and Fentanyl in STEMI and STEMI - ST Elevation Myocardial Infarction, sponsored by A.H. Tavenier. Completed at 1 site in Netherlands. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2020-02-12.

Sponsored by A.H. Tavenier · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
200
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Fast and accurate platelet inhibition is an important therapeutic goal in the acute treatment of patients with ST-segment elevation myocardial infarction (STEMI). Platelet inhibitory effects induced by normal oral P2Y12 receptor antagonists, for example ticagrelor, are delayed in STEMI patients undergoing primary percutaneous coronary intervention (primary PCI), which may be attributed to impaired absorption affecting drug pharmacokinetics (PK) and pharmacodynamics (PD). Another therapeutic goal in the acute treatment of STEMI is reduction of sympathetic stress and catecholamine release, thereby improving the balance between the demand for and supply of oxygen, by analgesia like fentanyl of morphine. To date, there are no studies that have specifically assessed the pharmacodynamics influences of fentanyl on platelet inhibition in STEMI patients who are pre-treated with crushed ticagrelor tablets. Therefore, In the ON-TIME-3 study, the investigators seek to show the influence of fentanyl on platelet inhibition in STEMI patients who are pre-treated with crushed ticagrelor in the ambulance.

02

Conditions studied

  • STEMI
  • STEMI - ST Elevation Myocardial Infarction
03

In context

ST Elevation Myocardial Infarction

850 studies on the registry are indexed under ST Elevation Myocardial Infarction; 197 are open to participants now.

This study's enrollment of 200 is close to the median of 194 across 527 interventional studies indexed under ST Elevation Myocardial Infarction.

Browse ST Elevation Myocardial Infarction studies →

Lead sponsor

This is the only study on the registry with A.H. Tavenier as lead sponsor.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 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

i. age ≥18 years

ii. referred by ambulance paramedics to Isala (Zwolle) or Zuyderland Hospital (Heerlen)

iii. diagnosed in the ambulance with STEMI defined as:

  1. ongoing chest pain >30 minutes and \<12 hours duration and
  2. ST-segment elevation >0.1 milliVolt in at least 2 contiguous leads

iv. ongoing chest pain with a pain score (NRS) ≥4

v. the patient has been informed of the nature of the study, agrees to its provisions and has provided verbal in the pre-hospital phase followed by written informed consent in hospital

Exclusion criteria

Exclusion Criteria:

i. presenting with cardiogenic shock; defined as:

  1. systolic blood pressure \<90 mmHg and
  2. heart rate >100/min and
  3. peripheral oxygen saturation \<90% (without oxygen administration)

ii. patients with a nasogastric tube in situ or requiring a nasogastric tube

iii. patients who already received fentanyl or paracetamol \<2 hours prior to randomization

iv. patients on current treatment with P2Y12 inhibitors (ticagrelor, clopidogrel or prasugrel)

v. allergy to morphine or paracetamol

vi. patients with recent major bleeding complications or to dual antiplatelet therapy:

  1. to aspirin or ticagrelor
  2. current use of (new) oral anticoagulation
  3. history of bleeding diathesis or known coagulopathy
  4. active bleeding
  5. refusal of blood transfusions
  6. history of intracerebral mass, aneurysm, arteriovenous malformation, or hemorrhagic stroke
  7. known severe liver dysfunction

vii. received any organ transplant or is on a waiting list for any organ transplant

viii. patients undergoing dialysis

ix. pregnant or lactating female

x. patients currently participating in another drug or device study

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.

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.

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.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

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Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
200 participants (actual)

Study arms

  • Active comparator
    paracetamol

    Patients are randomized to paracetamol 1000 mg iv or fentanyl 1-2 mcg/kg with a maximum of 4 mcg/kg iv.

    Drug: Paracetamol

  • Active comparator
    fentanyl

    Drug: Fentanyl

Interventions

  • Patients are randomized to paracetamol 1000 mg iv or fentanyl 1-2 mcg/kg with a maximum of 4 mcg/kg iv.

  • Patients are randomized to paracetamol 1000 mg iv or fentanyl 1-2 mcg/kg with a maximum of 4 mcg/kg iv.

06

What researchers measure

Primary outcomes

  1. platelet reactivity

    Platelet reactivity units (PRU) directly post-PCI or 1 hour post-angiography

    Time frame: directly post-PCI or 1 hour post-angiography

07

Study locations

1 site
  • Isala clinics
    Zwolle, Netherlands
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 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 Feb 2018 to primary completion in Oct 2019, 20 months.

Of 44 non-industry phase 4 interventional studies under ST Elevation Myocardial Infarction, half reached primary completion within 34 months of starting (the median), counting those still running; a quarter within 21 and three quarters within 74. This study's 20 months is below that.

Counting every sponsor, half of 49 studies reached it within 34 months; a quarter within 22 and three quarters within 63.

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

Registered
Oct 30, 2017
First posted
Jan 17, 2018
StartActual
Feb 16, 2018
Primary completionActual
Oct 22, 2019
CompletionActual
Nov 22, 2019
Last update
Feb 12, 2020
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 Feb 12, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03400267
Lead sponsor
A.H. Tavenier
Collaborators
Isala
Responsible party
A.H. Tavenier (Master of Science, Isala) — Sponsor-investigator
First posted
Jan 17, 2018
Start date
Feb 16, 2018
Primary completion
Oct 22, 2019
Completion
Nov 22, 2019
Last update
Feb 12, 2020

Oversight

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

Not currently enrolling

This study is completed, as verified in Feb 2020. You cannot join it, but the record below documents what was studied.

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Studies of the drugs tested here: Acetaminophen · Fentanyl

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