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Updated: Jun 30, 2026

Interventional Diagnostic Procedure: A Practical Guide for the Assessment of Coronary Vascular Function
Published on: March 15, 2022
Contemporary evidence in protected percutaneous coronary intervention: a case-based review
Ovidio De Filippo1,2, Jürgen Leick3, Giuseppe Tarantini4
1Division of Cardiology, Cardiovascular and Thoracic Department, Città della Salute e della Scienza (AOU), Corso Bramante 88/90, 10126 Turin, Italy.
Insights
Protected percutaneous coronary intervention (PCI) using microaxial flow pumps (mAFP) offers a safe strategy for high-risk patients with severe left ventricular dysfunction. This approach enables complete revascularization, improving outcomes in complex cases unsuitable for surgery.
Area of Science:
- Interventional Cardiology
- Cardiovascular Medicine
- Mechanical Circulatory Support
Background:
- High-risk percutaneous coronary intervention (PCI) in patients with severely reduced left ventricular ejection fraction (LVEF) poses a significant risk of hemodynamic collapse.
- Current European Society of Cardiology (ESC) guidelines (Class IIb-III) support PCI for patients with severe left ventricular (LV) dysfunction, complex disease, or surgical ineligibility.
Purpose of the Study:
- To illustrate the expanding role of protected PCI with microaxial flow pumps (mAFP) in high-risk patients meeting Class IIb-III ESC criteria.
- To demonstrate how mAFP-assisted PCI can facilitate complete and optimized revascularization safely in patients with severe LV dysfunction and complex coronary artery disease.
Main Methods:
- Case presentation of a 66-year-old male with severe LV dysfunction and multivessel/left main disease undergoing protected PCI.
- Utilized microaxial flow pumps (mAFP) for percutaneous mechanical circulatory support (MCS) during PCI.
- Employed contemporary evidence supporting mAFP to maintain forward flow and ventricular unloading.
Main Results:
- Protected PCI with mAFP successfully maintained forward flow and ventricular unloading, minimizing hemodynamic instability.
- The approach allowed for meticulous lesion preparation, imaging-guided optimization, and complex PCI techniques (e.g., bifurcation) while preserving perfusion.
- The procedure was performed safely, enabling complete and optimized revascularization.
Conclusions:
- Protected PCI using mAFP is a safe and effective option for carefully selected high-risk patients with severe LV dysfunction and complex coronary disease.
- This strategy bridges a therapeutic gap, enabling complete revascularization and potentially promoting early functional recovery.
- Impella-supported high-risk PCI represents a valuable tool in contemporary revascularization practice.
Abstract:
High-risk percutaneous coronary intervention (PCI) in patients with markedly reduced left ventricular ejection fraction (LVEF) carries a substantial risk of haemodynamic collapse, creating an unmet need for strategies that allow complete, optimized revascularization without compromising safety. These cases often fall within the Class IIb-III indications of the 2024 European Society of Cardiology (ESC) Chronic Coronary Syndromes and Revascularization Guidelines, which support PCI in patients with severe left ventricular (LV) dysfunction, complex or multivessel disease, and surgical ineligibility or refusal after Heart Team evaluation. For such individuals, protected PCI using percutaneous mechanical circulatory support (MCS), namely microaxial flow pumps (mAFP), may enable procedural completeness and improve outcomes. Herein, we present a case of a 66-year-old male that illustrates the expanding role of protected PCI in patients who meet Class IIb-III ESC Guidelines criteria, with severe LV dysfunction, multivessel or left main disease, and surgical refusal or ineligibility. Contemporary evidence supports the use of mAFP-assisted PCI to maintain forward flow and ventricular unloading during complex revascularization, thereby minimizing ischaemic and haemodynamic instability. Such an approach allows the operator to pursue meticulous lesion preparation, imaging-guided optimization, and bifurcation PCI techniques while preserving perfusion and procedural safety. In appropriately selected cases, Impella-supported high-risk PCI represents a safe and effective option. It enables complete, optimized revascularization and can promote early functional recovery, bridging a crucial therapeutic gap in contemporary revascularization practice.
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