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Prophylactic IABP in Delayed-Presentation Anterior STEMI (PROACTIVE-AMI)

10 de agosto de 2026 actualizado por: Qilu Hospital of Shandong University

Prophylactic Intra-Aortic Balloon Counterpulsation for Delayed-Presentation Anterior ST-Segment Elevation Myocardial Infarction: A Prospective, Multicenter, Randomized Controlled Trial (PROACTIVE-AMI)

PROACTIVE-AMI is a prospective, multicenter, randomized, open-label trial with blinded endpoint adjudication evaluating whether prophylactic intra-aortic balloon counterpulsation (IABP) initiated before primary percutaneous coronary intervention (PPCI) improves clinical outcomes in patients with delayed-presentation acute anterior ST-segment elevation myocardial infarction (STEMI). Eligible patients are adults aged ≥18 years who present 4 to 12 hours after symptom onset, have electrocardiographic evidence of anterior STEMI with proximal left anterior descending artery total occlusion (TIMI flow 0), and are planned for PPCI. Participants will be randomized 1:1 to pre-PPCI IABP plus standard PPCI or standard PPCI alone. The primary endpoint is 180-day major adverse cardiovascular events (MACE), defined as a composite of all-cause death, cardiogenic shock, and new or worsening heart failure. Secondary outcomes include individual MACE components, cardiac death, length of stay, NT-proBNP, left ventricular ejection fraction, and left ventricular end-diastolic volume. Safety outcomes include major bleeding, vascular complications, thrombocytopenia, and stroke.

Descripción general del estudio

Estado

Aún no reclutando

Condiciones

Intervención / Tratamiento

Descripción detallada

This is a prospective, multicenter, randomized, open-label, parallel-group, controlled clinical trial with blinded endpoint adjudication. The study is designed to evaluate whether prophylactic intra-aortic balloon counterpulsation (IABP) before primary percutaneous coronary intervention (PPCI) can improve outcomes in patients with delayed-presentation acute anterior ST-segment elevation myocardial infarction (STEMI). Eligible patients are adults aged ≥18 years with symptom onset to presentation between 4 and 12 hours, electrocardiographic evidence of anterior STEMI (≥2 mm ST elevation in contiguous anterior leads or sum ≥4 mm), and angiographically confirmed proximal left anterior descending artery occlusion with TIMI flow 0. After informed consent and coronary angiography confirming eligibility, participants are randomized in a 1:1 ratio to one of two groups: (1) prophylactic IABP before infarct-related artery opening plus standard PPCI, or (2) standard PPCI alone. In the intervention group, IABP will be inserted before PCI, operated at a 1:1 counterpulsation ratio for at least 24 hours and up to 72 hours as clinically appropriate. In the control group, prophylactic mechanical circulatory support will not be routinely used; rescue IABP may be initiated if predefined hemodynamic deterioration or complications occur. All participants receive guideline-directed medical therapy for ST-segment elevation myocardial infarction. The primary endpoint is major adverse cardiovascular events (MACE) within 180 days after randomization, defined as a composite of all-cause death, cardiogenic shock, and new or worsening heart failure. Secondary endpoints include individual components of the primary composite endpoint, cardiac death, length of hospital stay, NT-proBNP at 90 and 180 days, left ventricular ejection fraction and left ventricular end-diastolic volume at 90 and 180 days. Safety outcomes include major bleeding (BARC 3-5), vascular complications, thrombocytopenia, and stroke within 30 days. Follow-up assessments will be performed during hospitalization and at 30, 90, and 180 days after randomization. Endpoint adjudication will be performed by an independent clinical events committee blinded to treatment assignment.

Tipo de estudio

Intervencionista

Inscripción (Estimado)

504

Fase

  • No aplica

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Estudio Contacto

Copia de seguridad de contactos de estudio

  • Nombre: Yuguo Chen, MD
  • Número de teléfono: +86 18560085555
  • Correo electrónico: chen919085@126.com

Ubicaciones de estudio

  • Porcelana
      • Beijing, Porcelana, 100037
        • Fuwai Hospital, Chinese Academy of Medical Sciences
        • Contacto:
          • Qing Gu, MD, PhD
          • Número de teléfono: +86 10 88396009
          • Correo electrónico: guqingfw@126.com
    • Shandong
      • Jinan, Shandong, Porcelana, 250012
        • Qilu Hospital of Shandong University, Jinan, Shandong, China
        • Contacto:
          • Yuguo Chen, MD
        • Contacto:
          • Chuanbao Li, MD
          • Número de teléfono: +86 18560083097
          • Correo electrónico: bao2460@126.com
      • Jining, Shandong, Porcelana, 272011
        • Jining No.1 People's Hospital
        • Contacto:
          • Daqing Song, MD
          • Número de teléfono: +86 537 2253115
          • Correo electrónico: songdq_jn@163.com
      • Qingdao, Shandong, Porcelana, 266003
        • The Affiliated Hospital of Qingdao University
        • Contacto:
          • Peng Li, MD
          • Número de teléfono: +86 532 82911101
          • Correo electrónico: lipeng_qdu@163.com

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

  • Adulto
  • Adulto Mayor

Acepta Voluntarios Saludables

No

Descripción

Inclusion Criteria:

  1. Age ≥ 18 years.
  2. First electrocardiogram on arrival shows ST-segment elevation ≥ 2 mm in at least two contiguous anterior leads, or sum of ST-segment elevation ≥ 4 mm in anterior leads.
  3. Ischemic symptoms (chest pain, chest tightness, upper abdominal discomfort, left shoulder radiation, etc.) onset to hospital arrival between ≥ 4 hours and ≤ 12 hours, and planned for primary PCI.
  4. Coronary angiography confirms the infarct-related artery is the proximal left anterior descending (LAD) (before the first septal branch or first diagonal branch) with TIMI flow grade 0 (total occlusion).
  5. Patient or legal representative provides written informed consent.

Exclusion Criteria:

  1. Established cardiogenic shock (systolic blood pressure < 90 mmHg without inotropes/vasopressors, or requiring vasopressors to maintain systolic blood pressure ≥ 90 mmHg, AND blood lactate > 2.0 mmol/L).
  2. Severe heart failure: Killip class ≥ III, or requiring non-invasive/invasive positive pressure ventilation before enrollment.
  3. Malignant arrhythmias, including cardiac arrest, ventricular fibrillation, ventricular flutter, pulseless ventricular tachycardia, or high-grade atrioventricular block.
  4. Severe mechanical complications (e.g., free wall rupture, ventricular septal defect, acute severe mitral regurgitation).
  5. Contraindications to IABP (severe peripheral vascular disease, aortic dissection, known aortic aneurysm, moderate-to-severe aortic regurgitation).
  6. Prior myocardial infarction or known chronic heart failure (left ventricular ejection fraction < 50%).
  7. Prior coronary artery bypass grafting (CABG).
  8. Stroke within 1 month, or history of hemorrhagic stroke at any time.
  9. Active gastrointestinal bleeding within 3 months, or gastrointestinal diseases with increased bleeding risk.
  10. Received thrombolytic therapy for this episode.
  11. Initiation of any mechanical circulatory support (IABP, Impella, ECMO) before coronary angiography.
  12. Severe hepatic insufficiency (Child-Pugh C, or ALT >5×ULN with total bilirubin >3×ULN), renal insufficiency (eGFR < 15 mL/min/1.73 m² or chronic dialysis), or end-stage disease with life expectancy < 1 year.
  13. Pregnancy or lactation.
  14. Currently participating in another interventional trial.

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Propósito principal: Tratamiento
  • Asignación: Aleatorizado
  • Modelo Intervencionista: Asignación paralela
  • Enmascaramiento: Ninguno (etiqueta abierta)

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Experimental: Prophylactic IABP + PPCI
Participants randomized to this arm will receive prophylactic intra-aortic balloon pump counterpulsation before primary percutaneous coronary intervention (PPCI), followed by standard PPCI and guideline-directed medical therapy.
Dispositivo: Intra-Aortic Balloon Pump
Intra-aortic balloon counterpulsation initiated before opening the infarct-related artery and maintained according to protocol.
Procedimiento: Primary Percutaneous Coronary Intervention
Standard primary percutaneous coronary intervention for infarct-related artery reperfusion.
Comparador activo: Standard PPCI Alone
Participants randomized to this arm will receive standard PPCI and guideline-directed medical therapy without routine prophylactic IABP. Rescue IABP may be used only if clinically indicated according to protocol.
Procedimiento: Primary Percutaneous Coronary Intervention
Standard primary percutaneous coronary intervention for infarct-related artery reperfusion.

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
180-day Major Adverse Cardiovascular Events (MACE)
Periodo de tiempo: 180 days
Composite of all-cause death, cardiogenic shock and heart failure assessed at 180 days.
180 days

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
All-cause Death
Periodo de tiempo: 180 days
Death from any cause assessed at 180 days.
180 days
Cardiogenic Shock
Periodo de tiempo: 180 days
Cardiogenic shock defined as systolic blood pressure <90 mmHg without vasoactive support or requiring vasoactive agents to maintain blood pressure, together with blood lactate >2.0 mmol/L, assessed at 180 days.
180 days
Heart Failure
Periodo de tiempo: 180 days
New-onset or worsening heart failure during hospitalization or rehospitalization after discharge for heart failure, assessed at 180 days.
180 days
Cardiac Death
Periodo de tiempo: 180 days
Death due to cardiovascular causes assessed at 180 days.
180 days
Length of Hospital Stay
Periodo de tiempo: from admission to discharge
Number of days from admission to discharge.
from admission to discharge
NT-proBNP
Periodo de tiempo: 90 days
Plasma NT-proBNP level at 90 days.
90 days
NT-proBNP
Periodo de tiempo: 180 days
Plasma NT-proBNP level at 180 days.
180 days
Left Ventricular Ejection Fraction (LVEF)
Periodo de tiempo: 90 days
Left ventricular ejection fraction assessed by echocardiography or other protocol-specified imaging modality at 90 days.
90 days
Left Ventricular Ejection Fraction (LVEF)
Periodo de tiempo: 180 days
Left ventricular ejection fraction assessed by echocardiography or other protocol-specified imaging modality at 180 days.
180 days
Left Ventricular End-Diastolic Volume (LVEDV)
Periodo de tiempo: 90 days
Left ventricular end-diastolic volume assessed by echocardiography or other protocol-specified imaging modality at 90 days.
90 days
Left Ventricular End-Diastolic Volume (LVEDV)
Periodo de tiempo: 180 days
Left ventricular end-diastolic volume assessed by echocardiography or other protocol-specified imaging modality at 180 days.
180 days

Otras medidas de resultado

Medida de resultado
Medida Descripción
Periodo de tiempo
Major Bleeding
Periodo de tiempo: 30 days
Safety Outcome Measures: Bleeding events classified as BARC 3-5, assessed at 30 days.
30 days
Vascular Complications
Periodo de tiempo: 30 days
Safety Outcome Measures: Severe vascular complications requiring surgical or endovascular repair, including limb ischemia, pseudoaneurysm, or arterial dissection, assessed at 30 days.
30 days
Thrombocytopenia
Periodo de tiempo: 30 days
Safety Outcome Measures: Platelet count <100 × 10^9/L or a decrease of >50% from baseline, assessed at 30 days.
30 days
Stroke
Periodo de tiempo: 30 days
Safety Outcome Measures: Ischemic or hemorrhagic stroke adjudicated by the Clinical Events Committee, assessed at 30 days.
30 days

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Patrocinador

Qilu Hospital of Shandong University

Investigadores

  • Silla de estudio: Yuguo Chen, Qilu Hospital of Shandong University

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio (Estimado)

1 de agosto de 2026

Finalización primaria (Estimado)

31 de enero de 2028

Finalización del estudio (Estimado)

31 de julio de 2028

Fechas de registro del estudio

Enviado por primera vez

1 de agosto de 2026

Primero enviado que cumplió con los criterios de control de calidad

10 de agosto de 2026

Publicado por primera vez (Actual)

12 de agosto de 2026

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

12 de agosto de 2026

Última actualización enviada que cumplió con los criterios de control de calidad

10 de agosto de 2026

Última verificación

1 de agosto de 2026

Más información

Términos relacionados con este estudio

Palabras clave

Términos MeSH relevantes adicionales

Otros números de identificación del estudio

  • KYLL-2026-04-009-2

Plan de datos de participantes individuales (IPD)

¿Planea compartir datos de participantes individuales (IPD)?

NO

Descripción del plan IPD

Individual participant data (IPD) will not be shared because the study team does not currently have a data sharing plan or repository in place. De-identified participant-level data may be available from the corresponding author upon reasonable request and subject to institutional approval.

Información sobre medicamentos y dispositivos, documentos del estudio

Estudia un producto farmacéutico regulado por la FDA de EE. UU.

No

Estudia un producto de dispositivo regulado por la FDA de EE. UU.

No

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .

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