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STRATegy SUccesS in High-Risk PCI With Impella CP: Evaluation of Hemodynamic Protection in Complex PCI (STRATUS-PCI)
Randomized Pilot Study to Mechanistically Evaluate Automatic Flow Mode on Impella CP Device During Protected Complex Percutaneous Coronary Intervention
STRATUS-PCI is a pilot clinical trial that compares two ways of running a small heart pump called Impella CP during a high-risk procedure to open blocked heart arteries (percutaneous coronary intervention, or PCI) in patients with weakened heart muscle. The pump is placed temporarily through an artery in the leg and sits across the aortic valve to help maintain blood flow during the procedure.
Fifty patients will be randomly assigned in equal numbers to one of two pump settings: an automatic mode that adjusts flow up to higher levels as needed, or a fixed lower-flow mode (P-2). The doctor performing the heart procedure will not know which setting is being used (double-blind). A separate doctor monitors blood pressure and is allowed to change the pump setting at any time if the patient becomes unstable.
The main question is whether the automatic mode helps doctors complete the planned heart procedure more successfully and without drops in blood pressure or other complications. Results will help design a larger future trial.
Studie Overzicht
Toestand
Interventie / Behandeling
Gedetailleerde beschrijving
Studietype
Inschrijving (Geschat)
Fase
- Niet toepasbaar
Contacten en locaties
Studiecontact
- Naam: Rayyan Hemetsberger, MD
- Telefoonnummer: 0043 1 40400 46140
- E-mail: rayyan.hemetsberger@meduniwien.ac.at
Studie Contact Back-up
- Naam: Kevin Hamzaraj, MD
- Telefoonnummer: 0043 1 40400 46 140
- E-mail: kevin.hamzaraj@meduniwien.ac.at
Studie Locaties
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State of Vienna
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Vienna, State of Vienna, Oostenrijk, 1090
- Medical University of Vienna
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Contact:
- Rayyan Hemetsberger, MD
- Telefoonnummer: 0043 1 40400 46140
- E-mail: rayyan.hemetsberger@meduniwien.ac.at
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
- Volwassen
- Oudere volwassene
Accepteert gezonde vrijwilligers
Beschrijving
Inclusion Criteria:
- signed written informed consent
- age ≥ 18 years
- presentation in chronic coronary syndrome or acute coronary syndrome (STEMI ≥ 24h)
- LV-EF ≤ 40 % and one of the following parameters:
Last remaining artery Unprotected LM-PCI + severe RCA stenosis or CTO Unprotected LM-PCI + left dominance Unprotected LM-PCI + severe aortic stenosis Unprotected LM-PCI + severe mitral regurgitation RCA PCI + unprotected severe LM stenosis RCA PCI + proximal LAD stenosis + proximal LCx stenosis
Exclusion Criteria:
- no written informed consent
- pregnancy
- acute infection
- recent ST-elevation myocardial infarction (< 24 hours) or not normalized CK-MB enzymes
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Behandeling
- Toewijzing: Gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Verviervoudigen
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
|---|---|
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Experimenteel: Impella CP Auto-mode
Patients in this arm receive temporary mechanical circulatory support with the Impella CP transvalvular axial-flow pump operating in Auto-mode (SmartAssist) throughout the protected high-risk percutaneous coronary intervention.
In Auto-mode, pump speed (P-level) is automatically adjusted in real time based on hemodynamic feedback, with maximum flow up to approximately 4.3 L/min.
|
The Impella CP is a transvalvular axial-flow micro-pump for temporary mechanical circulatory support, inserted via a 14F sheath into the femoral artery and positioned across the aortic valve.
The pump draws blood from the left ventricle and delivers it to the ascending aorta, providing forward flow up to approximately 4.3 L/min while reducing left ventricular work and end-diastolic pressure.
In this study, the device is used in all participants undergoing protected high-risk PCI, with the operating modality (Auto-mode in the experimental arm vs. fixed P-2 mode in the active comparator arm) determined by 1:1 randomization.
The unblinded study investigator may escalate Impella support if predefined hemodynamic instability criteria are met.
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Actieve vergelijker: Impella CP P-2 Mode
Patients in this arm receive temporary mechanical circulatory support with the Impella CP transvalvular axial-flow pump operating in the fixed P-2 setting (approximately 1.3-2.1 L/min flow) at the start of the procedure.
The unblinded study investigator continuously monitors hemodynamics during the procedure and is empowered to escalate Impella support to a higher P-level (or Auto-mode) without operator confirmation if any predefined hemodynamic instability criterion is met (MAP drop ≥ 25 mmHg, MAP < 60 mmHg for > 1 minute, flat line, catecholamine need, periprocedural resuscitation, or ventilation).
|
The Impella CP is a transvalvular axial-flow micro-pump for temporary mechanical circulatory support, inserted via a 14F sheath into the femoral artery and positioned across the aortic valve.
The pump draws blood from the left ventricle and delivers it to the ascending aorta, providing forward flow up to approximately 4.3 L/min while reducing left ventricular work and end-diastolic pressure.
In this study, the device is used in all participants undergoing protected high-risk PCI, with the operating modality (Auto-mode in the experimental arm vs. fixed P-2 mode in the active comparator arm) determined by 1:1 randomization.
The unblinded study investigator may escalate Impella support if predefined hemodynamic instability criteria are met.
|
Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Strategy Success
Tijdsspanne: 48 hours
|
The primary endpoint is strategy success, defined as completing the procedure with successful uncomplicated PCI of all intended segments with a TIMI flow of 3 and residual stenosis of less than 30% without hemodynamic instability.
Hemodynamic instability in our study is defined as 25 mmHg (as defined in past randomized studies) decrease on baseline mean arterial pressure (MAP) for longer than 1 minute or MAP of under 60 mmHg for longer than 1 minute, flat line, administration of any dose of catecholamines, change on Impella CP modality, periprocedural resuscitation and/or ventilation.
Complications are defined as periprocedural resuscitation, emergency surgery, periprocedural ventilation, death, periprocedural myocardial infarction type 4a based on the 4th universal definition of myocardial infarction (35), periprocedural acute renal injury based on the 2012 KDIGO definition of acute kidney injury (36), bleeding BARC type 3 or 5.
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48 hours
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Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
All-cause mortality
Tijdsspanne: 30 days
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Proportion of participants who die from any cause within 30 days after the index protected high-risk PCI procedure.
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30 days
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Target lesion revascularization (TLR)
Tijdsspanne: 30 days
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Proportion of participants undergoing any clinically driven repeat revascularization (PCI or CABG) of the target lesion within 30 days after the index procedure.
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30 days
|
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Target vessel myocardial infarction (TV-MI)
Tijdsspanne: 30 days
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Proportion of participants with myocardial infarction attributable to the target vessel within 30 days after the index procedure, defined per the 4th Universal Definition of Myocardial Infarction.
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30 days
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Early stent thrombosis
Tijdsspanne: 30 days
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Proportion of participants with definite or probable stent thrombosis (per Academic Research Consortium criteria) within 30 days after the index procedure.
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30 days
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Medewerkers en onderzoekers
Sponsor
Onderzoekers
- Studie stoel: Serdar Farhan, MD, Lennox Hill Hospital
Studie record data
Bestudeer belangrijke data
Studie start (Geschat)
Primaire voltooiing (Geschat)
Studie voltooiing (Geschat)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Werkelijk)
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- STRATUS-PCI Pilot RCT
Plan Individuele Deelnemersgegevens (IPD)
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Beschrijving IPD-plan
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