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Coronary Artery DiseaseNCT05369442

Prognosis and Antiplatelet Strategies for Patients With PCI and High Bleeding Risk:A Study Protocol

An observational study of Coronary Artery Disease, run by West China Hospital at 1 site in China.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

Percutaneous coronary intervention (PCI) is an important treatment strategy for patients with coronary artery disease. Combined bleeding after PCI significantly increases the risk of death in patients. Read more about this study

Who is it for?
Any age
Conditions the study is for
Coronary Artery Disease
How many people
1,300 participants
Where
1 siteChina
Study dates
1 May 2022to 1 Aug 2029
How long will I take part?
1 Year
Phase
Observational
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages Any age
  • All sexes
  • Child, Adult, Older adult

Study population: People at high risk of bleeding from PCI who meet one of the primary bleeding risk criteria or two of the secondary bleeding risk criteria, according to the criteria established by the ARC-HBR.

Who may be able to join

  • PCI patients >18 years of age and meeting 1 major criterion or 2 minor criteria of the ARC-HBR The ARC-HBR major criteria included:
  • long-term use of oral anticoagulants;
  • severe or end-stage chronic kidney disease [eGFR <30 ml/(min*1.73m2 )];
  • hemoglobin <11 g/dl, spontaneous bleeding requiring hospitalization or transfusion within the past 6 months or at any time;
  • chronic bleeding constitutional;
  • cirrhosis with portal hypertension spontaneous bleeding requiring hospitalization or transfusion within the past 6 months or at any time;
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  • moderate to severe baseline thrombocytopenia (platelets <100×10^9/L); chronic bleeding constitutional;
  • cirrhosis with portal hypertension;
  • active malignancy within the past 12 months (excluding non-melanoma skin cancer);
  • previous spontaneous brain hemorrhage (at any time);
  • traumatic brain hemorrhage within the past 12 months;
  • within the past 6 months moderate or severe ischemic stroke within the past 6 months;
  • the presence of cerebral arteriovenous malformation;
  • recent major surgery or major trauma within 30 days prior to PCI;
  • and major non-delayable surgery during DAPT.
  • Secondary criteria included:
  • age ≥75 years;
  • moderate chronic kidney disease [30 ml/(min*1.73m2 ) ≤ eGFR ≤ 59 ml/(min*1.73m2 )];
  • 11 g/dl ≤ hemoglobin < 13 g/dl in men and 11 g/dl ≤ hemoglobin < 12 g/dl in women; - spontaneous bleeding requiring hospitalization or blood transfusion in the past 6 months to 12 months;
  • long-term use of oral NSAIDs or steroids
  • Ischemic stroke of any duration not covered by the primary criteria.

Who cannot join

  • Patients who were already bleeding at the time of baseline inclusion
  • Patients who could not be followed up (including previously reserved phone changes, etc.) to obtain MACE events.

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

China1 site, 1 recruiting
  • West China Hospital, Sichuan University

    Sichuan, Sichuan, 610041

    Junyan Zhang, 18848242671, 651874354@qq.com

    Recruiting

Other trials in China

About this study

Percutaneous coronary intervention (PCI) is an important treatment strategy for patients with coronary artery disease. Combined bleeding after PCI significantly increases the risk of death in patients. The search for prognostic predictors and optimal antiplatelet therapy for patients with high bleeding risk (HBR) after PCI has been a hot topic in cardiovascular research. There is no accepted prognostic model or recommended antiplatelet therapy for patients with PCI-HBR. In this project, based on retrospective data extraction and prospective database building, we used artificial intelligence (AI) to analyze the adverse prognostic predictors of PCI-HBR patients, observe the types of antiplatelet drugs and duration of dual antiplatelet therapy in PCI-HBR patients, and compare the safety and feasibility of different antiplatelet regimens and treatment courses. The safety and feasibility of different antiplatelet regimens and regimens were compared.

Read the detailed description

This trail is a single center investigator-initiated prospective registry. PPP-PCI aims to observe the characteristics and prognosis of the PCI-HBR population and to explore appropriate antiplatelet therapy regimens to provide a basis for intervention guidance for patients with PCI-HBR. This project will help to further improve the existing bleeding prediction models and improve the efficiency of treating PCI-HBR patients.

Patients' baseline information is based on the latest test before PCI procedure. Basic information include age, gender, systolic blood pressure, diastolic blood pressure, body mass index, smoking status, smoking volume, positive family history of cardiovascular disease, hyperlipidemia, hypertension, diabetes, stroke history, peripheral artery disease, etc. Real-time update features include DAPT sessions, MACE event records, symptom records, sign records, test results, diagnosis, medical advice, real-time sign monitoring equipment data, ECG abnormalities, etc. Tests include a full set of lipid levels (including triglycerides, cholesterol, HDL, LDL, etc.), biochemical parameters (including creatinine, glomerular filtration rate, uric acid, etc.), hemoglobin, glucose, glycated hemoglobin, homocysteine, and lipoprotein(a) level. Imaging and functional testing data include coronary angiography images, intervention-related parameters, and target vessel lesion characteristics. The patient data is correlated with the visit intensity. The imaging images are used for deep learning to build unstructured classification models. The non-imaging data are used for machine learning to build a structured classification model. Pre-processing of the data includes image normalization, correction and normalization of irregular values, detection and removal of outliers and anomalies, interpolation and rejection of null values, removal of multicollinearity, and data normalization.

For the imaging images, a deep learning model was constructed using convolutional neural network to dichotomize the coronary vascular lesions and functional conditions contained in the coronary angiography images. For the non-imaging image data, Embedded method was used as the top-level method, and logistic regression, random forest, and gradient boosting tree were used as the bottom-level algorithms, and the key factors affecting the occurrence of MACE in the PCI-HBR population were extracted by fusing the feature weights through integrated learning. Based on the extracted key factors, a binary machine learning discriminative model was established, and SVM, XGBoost, random forest, and artificial neural network were used to complete the evaluation of multiple models, and the best model was selected as the machine learning classification model.

The deep learning model and machine learning model structures are weighted and fused to output the final results. Then the data collected by the future model is passed back to the training dataset for incremental learning to correct the model.

This trial will provide new insights and evidence on optimal antiplatelet therapy for a high bleeding risk patient cohort which is frequently encountered in real-world practice.

Medical subject headings
Coronary Artery Disease

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. death

    Death will be classified as cardiac or non-cardiac in origin. All causes of death will be considered cardiac unless a clear non-cardiac cause of death can be identified. Of these, hemorrhagic deaths will be specified.

    Measured: 30 days

  2. death

    Death will be classified as cardiac or non-cardiac in origin. All causes of death will be considered cardiac unless a clear non-cardiac cause of death can be identified. Of these, hemorrhagic deaths will be specified.

    Measured: 6 months

  3. death

    Death will be classified as cardiac or non-cardiac in origin. All causes of death will be considered cardiac unless a clear non-cardiac cause of death can be identified. Of these, hemorrhagic deaths will be specified.

    Measured: 1 year

  4. Myocardial infarction

    Defined as recurrent signs or symptoms of myocardial ischemia lasting more than 30 minutes, with new ST-T changes or Q waves in at least two consecutive leads, or new left bundle branch block, and re-elevated cardiac enzyme levels. The following creatine kinase-myocardial band isoenzyme (CK-MB) changes will be considered meaningfully elevated: CK-MB elevation on the basis of a ≥25% decrease in peak; CK-MB elevation >50% from the previous elevation; CK-MB elevation >2 times the normal upper limit in non-coronary interventions; CK-MB elevation >2 times the normal upper limit after PCI. CK-MB is greater than 5 times the upper limit of normal after PCI.

    Measured: 30 days

  5. Myocardial infarction

    Defined as recurrent signs or symptoms of myocardial ischemia lasting more than 30 minutes, with new ST-T changes or Q waves in at least two consecutive leads, or new left bundle branch block, and re-elevated cardiac enzyme levels. The following creatine kinase-myocardial band isoenzyme (CK-MB) changes will be considered meaningfully elevated: CK-MB elevation on the basis of a ≥25% decrease in peak; CK-MB elevation >50% from the previous elevation; CK-MB elevation >2 times the normal upper limit in non-coronary interventions; CK-MB elevation >2 times the normal upper limit after PCI. CK-MB is greater than 5 times the upper limit of normal after PCI.

    Measured: 6 months

  6. Myocardial infarction

    Defined as recurrent signs or symptoms of myocardial ischemia lasting more than 30 minutes, with new ST-T changes or Q waves in at least two consecutive leads, or new left bundle branch block, and re-elevated cardiac enzyme levels. The following creatine kinase-myocardial band isoenzyme (CK-MB) changes will be considered meaningfully elevated: CK-MB elevation on the basis of a ≥25% decrease in peak; CK-MB elevation >50% from the previous elevation; CK-MB elevation >2 times the normal upper limit in non-coronary interventions; CK-MB elevation >2 times the normal upper limit after PCI. CK-MB is greater than 5 times the upper limit of normal after PCI.

    Measured: 1 year

  7. Ischemic stroke

    Acute onset of focal or global neurological deficits lasting more than 24 hours, confirmed by computed tomography (CT) or magnetic resonance imaging (MRI) as ischemic stroke

    Measured: 30 days, 6 months, 1 year

  8. Ischemic stroke

    Acute onset of focal or global neurological deficits lasting more than 24 hours, confirmed by computed tomography (CT) or magnetic resonance imaging (MRI) as ischemic stroke

    Measured: 30 days

  9. Ischemic stroke

    Acute onset of focal or global neurological deficits lasting more than 24 hours, confirmed by computed tomography (CT) or magnetic resonance imaging (MRI) as ischemic stroke

    Measured: months

  10. Ischemic stroke

    Acute onset of focal or global neurological deficits lasting more than 24 hours, confirmed by computed tomography (CT) or magnetic resonance imaging (MRI) as ischemic stroke

    Measured: 1 year

  11. Major bleeding

    The severity of bleeding is graded according to the BARC criteria recommended by the International Society for the Study of Hemorrhage, and the site of bleeding is described, including intracranial, gastrointestinal, respiratory (e.g., hemoptysis), urinary (e.g., hematuria), subcutaneous or mucosal, gingival, nasal, ophthalmic, and surgical puncture site related. Minor bleeds are BARC types 1 and 2, and major bleeds are BARC types 3 and 5.

    Measured: 30 days, 6 months, 1 year

  12. Major bleeding

    The severity of bleeding is graded according to the BARC criteria recommended by the International Society for the Study of Hemorrhage, and the site of bleeding is described, including intracranial, gastrointestinal, respiratory (e.g., hemoptysis), urinary (e.g., hematuria), subcutaneous or mucosal, gingival, nasal, ophthalmic, and surgical puncture site related. Minor bleeds are BARC types 1 and 2, and major bleeds are BARC types 3 and 5.

    Measured: 30 days

  13. Major bleeding

    The severity of bleeding is graded according to the BARC criteria recommended by the International Society for the Study of Hemorrhage, and the site of bleeding is described, including intracranial, gastrointestinal, respiratory (e.g., hemoptysis), urinary (e.g., hematuria), subcutaneous or mucosal, gingival, nasal, ophthalmic, and surgical puncture site related. Minor bleeds are BARC types 1 and 2, and major bleeds are BARC types 3 and 5.

    Measured: 6 months

  14. Major bleeding

    The severity of bleeding is graded according to the BARC criteria recommended by the International Society for the Study of Hemorrhage, and the site of bleeding is described, including intracranial, gastrointestinal, respiratory (e.g., hemoptysis), urinary (e.g., hematuria), subcutaneous or mucosal, gingival, nasal, ophthalmic, and surgical puncture site related. Minor bleeds are BARC types 1 and 2, and major bleeds are BARC types 3 and 5.

    Measured: 1 year

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted11 May 2022
  2. Study start1 May 2022
  3. Primary completion1 May 2028 (estimated)
  4. Study completion1 Aug 2029 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
1,300 participants (estimated)
Target duration
1 Year
IDs, dates and publications
ClinicalTrials.gov ID
NCT05369442
Sponsor's protocol ID
WestChinaH-CVD-004
Status last verified
Jan 2026
First submitted
23 Apr 2022
Last updated
6 Jan 2026
Results posted
No
FDA-regulated drug
No
FDA-regulated device
No

Publications

  • Zhang J, Yan T, Liu R, Li Y, Zhou M, Wang H, Li C, Rao L, Chen Z, He Y. Safety Analysis of Spironolactone Use in Patients Undergoing Percutaneous Coronary Intervention with High Bleeding Risk: A Propensity Score-Matched Study. Cardiovasc Drugs Ther. 2026 Feb;40(1):191-200. doi: 10.1007/s10557-025-07676-3. Epub 2025 Feb 5.

    PubMed 39907871
  • Zhang J, Chen Z, Liu R, Li Y, Zhao H, Li Y, Zhou M, Wang H, Li C, Rao L, He Y. Development and Validation of a Nomogram for Predicting Long-Term Net Adverse Clinical Events in High Bleeding Risk Patients Undergoing Percutaneous Coronary Intervention. Rev Cardiovasc Med. 2025 Jan 17;26(1):25352. doi: 10.31083/RCM25352. eCollection 2025 Jan.

    PubMed 39867174

Questions about this trial

What is this clinical trial studying?

An observational study of Coronary Artery Disease, run by West China Hospital at 1 site in China.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 21 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 6 Jan 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Each site lists its own contact: choose the nearest one under Trial locations. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

death (time frame: 30 days). The study lists 14 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT05369442, which also lists 2 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 6 Jan 2026.

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