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

10. August 2026 aktualisiert von: 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.

Studienübersicht

Status

Noch keine Rekrutierung

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

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.

Studientyp

Interventionell

Einschreibung (Geschätzt)

504

Phase

  • Unzutreffend

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienkontakt

Studieren Sie die Kontaktsicherung

Studienorte

  • China
      • Beijing, China, 100037
        • Fuwai Hospital, Chinese Academy of Medical Sciences
        • Kontakt:
    • Shandong
      • Jinan, Shandong, China, 250012
        • Qilu Hospital of Shandong University, Jinan, Shandong, China
        • Kontakt:
          • Yuguo Chen, MD
        • Kontakt:
      • Jining, Shandong, China, 272011
        • Jining No.1 People's Hospital
        • Kontakt:
      • Qingdao, Shandong, China, 266003
        • The Affiliated Hospital of Qingdao University
        • Kontakt:

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

  • Erwachsene
  • Älterer Erwachsener

Akzeptiert gesunde Freiwillige

Nein

Beschreibung

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.

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Behandlung
  • Zuteilung: Zufällig
  • Interventionsmodell: Parallele Zuordnung
  • Maskierung: Keine (Offenes Etikett)

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
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.
Gerät: Intra-Aortic Balloon Pump
Intra-aortic balloon counterpulsation initiated before opening the infarct-related artery and maintained according to protocol.
Verfahren: Primary Percutaneous Coronary Intervention
Standard primary percutaneous coronary intervention for infarct-related artery reperfusion.
Aktiver Komparator: 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.
Verfahren: Primary Percutaneous Coronary Intervention
Standard primary percutaneous coronary intervention for infarct-related artery reperfusion.

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
180-day Major Adverse Cardiovascular Events (MACE)
Zeitfenster: 180 days
Composite of all-cause death, cardiogenic shock and heart failure assessed at 180 days.
180 days

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
All-cause Death
Zeitfenster: 180 days
Death from any cause assessed at 180 days.
180 days
Cardiogenic Shock
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 180 days
Death due to cardiovascular causes assessed at 180 days.
180 days
Length of Hospital Stay
Zeitfenster: from admission to discharge
Number of days from admission to discharge.
from admission to discharge
NT-proBNP
Zeitfenster: 90 days
Plasma NT-proBNP level at 90 days.
90 days
NT-proBNP
Zeitfenster: 180 days
Plasma NT-proBNP level at 180 days.
180 days
Left Ventricular Ejection Fraction (LVEF)
Zeitfenster: 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)
Zeitfenster: 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)
Zeitfenster: 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)
Zeitfenster: 180 days
Left ventricular end-diastolic volume assessed by echocardiography or other protocol-specified imaging modality at 180 days.
180 days

Andere Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Major Bleeding
Zeitfenster: 30 days
Safety Outcome Measures: Bleeding events classified as BARC 3-5, assessed at 30 days.
30 days
Vascular Complications
Zeitfenster: 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
Zeitfenster: 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
Zeitfenster: 30 days
Safety Outcome Measures: Ischemic or hemorrhagic stroke adjudicated by the Clinical Events Committee, assessed at 30 days.
30 days

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Qilu Hospital of Shandong University

Ermittler

  • Studienstuhl: Yuguo Chen, Qilu Hospital of Shandong University

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Geschätzt)

1. August 2026

Primärer Abschluss (Geschätzt)

31. Januar 2028

Studienabschluss (Geschätzt)

31. Juli 2028

Studienanmeldedaten

Zuerst eingereicht

1. August 2026

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

10. August 2026

Zuerst gepostet (Tatsächlich)

12. August 2026

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

12. August 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

10. August 2026

Zuletzt verifiziert

1. August 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Schlüsselwörter

Zusätzliche relevante MeSH-Bedingungen

Andere Studien-ID-Nummern

  • KYLL-2026-04-009-2

Plan für individuelle Teilnehmerdaten (IPD)

Planen Sie, individuelle Teilnehmerdaten (IPD) zu teilen?

NEIN

Beschreibung des IPD-Plans

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.

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Nein

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Nein

Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .

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