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Optimal PERioperative Antiplatelet Therapy Investigation ON Abdominal Surgery After Coronary Stent Implantation

Optimal PERioperative Antiplatelet Therapy Investigation ON Abdominal Surgery After Coronary Stent Implantation

Status
Recruiting
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06723145
Acronym
OPERATION
Enrollment
1200
Registered
2024-12-09
Start date
2025-01-20
Completion date
2027-03-31
Last updated
2025-02-11

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

Conditions

Antiplatelet Agents, Perioperative Care

Keywords

antiplatelet agents, perioperative care, coroanry artery disease, abdominal disease, noncardiac surgery

Brief summary

The purpose of this study is to evaluate the impact of perioperative aspirin continuation on clinical outcomes in patients with a history of coronary stent implantation who are scheduled for abdominal surgery.

Detailed description

PCI with coronary stent implantation is performed for a huge number of patients with coronary artery disease. Approximately 20% of these patients undergo non-cardiac surgery within three years after PCI. However, there is a scarcity of clinical evidence regarding the efficacy of perioperative aspirin continuation on cardiovascular events.

Interventions

DRUGAspirin

perioperative aspirin continuation

DRUGAspirin interruption

Aspirin interruption 5-7 days before surgery

Sponsors

Kyoto University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
20 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patients with a history of coronary stenting and scheduled for abdominal surgery * Patients on a single antiplatelet agent

Exclusion criteria

* Patients on dual antiplatelet therapy (DAPT) * Patients on anticoagulation therapy * Patients with a history of stent thrombosis * Patients with CHADS2 score \>= 5 * Patients at extremely high risk of bleeding and unable to continue preoperative aspirin * Patients incapable of consent, including those under 20 years of age * Other patients for whom either discontinuation or continuation of antiplatelet agents is deemed inappropriate by the attending physician

Design outcomes

Primary

MeasureTime frameDescription
a composite of death or myocardial infarction30 daysthe primary endpoint is defined as a composite of all-cause death or myocardial infarction (4th UDMI definition)

Secondary

MeasureTime frameDescription
Death/Myocardial Infarction (4th UDMI Definition)/Stroke30 daysa composite of Death, Myocardial Infarction (4th UDMI Definition), or Stroke
Death/Myocardial Infarction (4th UDMI Definition)/Myocardial Injury (MINS)30 daysa composite of Death, Myocardial Infarction (4th UDMI Definition), or Myocardial Injury (MINS)
Myocardial Infarction (4th UDMI Definition)/Myocardial Injury (MINS)30 daysa composite of Myocardial Infarction (4th UDMI Definition), or Myocardial Injury (MINS)
Death/Myocardial Infarction (ARC-2 Definition)/Stroke30 daysa composite of Death, Myocardial Infarction (ARC-2 Definition), orStroke
Death30 daysall-cause death
Cardiovascular Death30 dayscardac and vascular death
Myocardial Infarction (4th UDMI Definition)30 daysMyocardial Infarction defined by 4th UDMI Definition
Myocardial Infarction (ARC-2 Definition)30 daysMyocardial Infarction defined by ARC-2 Definition
Myocardial Infarction (SCAI Definition)30 daysMyocardial Infarction defined by SCAI Definition
Myocardial Infarction (modified POISE-2 Definition)30 daysMyocardial Infarction defined by modified POISE-2 Definition
Myocardial Injury (MINS)30 daysMyocardial Injury (MINS) is defined as cardiac enzyme elevation without symptoms or ECG changes.
Major bleeding (TIMI major/minor bleeding)30 daysTIMI major/minor bleeding
Stroke30 daysSudden neurological disorder that persists for at least 24 hours and is caused by blockage of cerebral blood flow due to bleeding or ischemia.
Cerebral Infarction30 daysSudden neurological disorder that persists for at least 24 hours and is caused by infarction.
Cerebral Hemorrhage30 daysSudden neurological disorder that persists for at least 24 hours and is caused by cerebral bleeding.
Coronary Revascularization30 daysPCI or CABG
Major Bleeding (BARC classification)30 daysMajor bleeding defined by BARC classification
Major Bleeding (modified POISE-2 classification)30 daysMajor bleeding defined by modified POISE-2 classification
Major Bleeding (GUSTO classification)30 daysMajor bleeding defined by GUSTO classification
Fatal Bleeding30 daysFatal bleeding within 30 days after abdominal surgery
Bleeding Volume During Non-Cardiac Surgery30 daysbleeding volume during abdominal surgery
Transfusion30 daystransfusion during and after surgery
Reoperation30 daysany reoperation
Stent Thrombosis (ARC Definition)30 daysStent thrombosis defined by ARC definition

Countries

Japan

Contacts

Primary ContactHiroki Shiomi, MD, PhD
hishiomi@kuhp.kyoto-u.ac.jp+81-75-751-4255
Backup ContactErika Yamamoto, MD, PhD
erkymmt@kuhp.kyoto-u.ac.jp+81-75-751-4254

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026