Pretreatment of Acute Coronary Syndrome With Dual Antiplatelet Agents (DATES)

November 26, 2025 updated by: Ayman J Hammoudeh, MD, FACC, Jordan Collaborating Cardiology Group

Dual Antiplatelet Agents Therapy in the Emergency Department for Acute Coronary Syndrome (The DATES Study).

This is a chart review of data on use of antiplatelet (AP) medications for acute coronary syndrome in the ER. Guidelines recommend giving aspirin in the ER and a second AP agent in the cath lab. What is the outcome when the 2 agents are given n the ER?

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Detailed Description

Dual antiplatelet therapy (DAPT) is a standard treatment in ST-elevation myocardial infarction (STEMI) and non-ST-segment-elevation acute coronary syndrome (NSTEACS) . However, the timing of initiation of DAPT in the Emergency Department (ED) has been defined by recent western guidelines (i.e., aspirin in the ER and and a second AP agent when the coronary anatomy has been denied in the cath lab. This strategy aims at decreasing the incidence of bleeding events. However, patients with ACS in the Middle East are younger than those in the West and have lower bleeding risk. The purpose of this study is to evaluate the incidence of major bleeding in patients who received DAPT in the ED according to the discretion of the treating physician.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
200

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

Study Locations

  • Jordan
      • Amman, Jordan, 11184
      • Amman, Jordan, 11180
        • Recruiting
        • Jordan University Hospital
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

The study will enroll adult patients, men and women, who present to the emergency department (ED) with acute coronary syndrome (ST segment elevation myocardial infarction, non ST segment elevation myocardial infarction, and unstable angina) and who are prescribed aspirin in the ED and a second oral antiplatelet medication either in the ED (not according to recent guidelines) or upon identification of the coronary anatomy in the cath lab (based on recent guidelines). Incidence of bleeding and other cardiovascular events in these patients based in timing of administering the antiplatelet therapy.

Description

Inclusion Criteria:

  • Adult patients
  • Presenting with acute coronary syndrome (ST segment elevation myocardial infarction, non ST segment elevation myocardial infarction, and unstable angina).
  • Antiplatelet medication (s) prescribed during index admission to hospital.
  • Willingness of the patient to be called for follow up up to 1 year after index hospitalization.

Exclusion Criteria:

  • Non cardiac chest pain.
  • No administration of antiplatelet agents during hospitalization.
  • Refusal of contact for follow up.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Adult patients admitted for acute coronary syndrome via the ED
Patients with ACS presenting to the ED with a planned coronary angiography for possible coronary revascularization who get aspirin in the ED will be evaluated for bleeding and major cardiovascular events when they receive a second antiplatelet agent in the ED compared with in the cath lab.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Major bleeding event
Time Frame: From enrollment to the end of the study at 1 year.
Major bleeding event is defined as any of the following: 1. bleeding causing hemodynamic compromise, 2. bleeding necessitating blood transfusion, or 3. bleeding in a closed space (intracerebral intraspinal and intraocular).
From enrollment to the end of the study at 1 year.

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Major adverse cardiovascular and cerebral events
Time Frame: from enrollment to 1 year
Occurrence of any of the followings: 1. Cardiovascular death (death due to documented cardiovascular event: fatal myocardial infarction, or fatal stroke), 2. Non fatal myocardial infarction (two of three criteria: ischemic chest pain, electrocardiographic changes [ST segment deviation and T wave inversion] and elevated cardiac enzymes), 2. Definite stent thrombosis (demonstrating a thrombus in the stent on coronary angiography), 3. Non fatal stroke (new neurological deficit compatible with cerebral ischemia, brain imaging by computed tomography or magnetic resonance showing typical stroke, ischemic or hemorrhagic), 4. Coronary revascularization by percutaneous intervention or coronary bypass surgery.
from enrollment to 1 year

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Jordan Collaborating Cardiology Group

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
August 1, 2025

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
August 1, 2026

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
November 1, 2026

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 18, 2025

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 18, 2025

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 26, 2025

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
November 28, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 26, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • DATES.2.25/irbIH1725

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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