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Updated: Feb 12, 2026

Interventional Diagnostic Procedure: A Practical Guide for the Assessment of Coronary Vascular Function
Published on: March 15, 2022
High-risk percutaneous coronary intervention: how to define it today?
Vincenzo De Marzo1, Domenico D'amario1, Mattia Galli1
1Unit of Interventional Cardiology, Department of Cardiovascular Sciences, Catholic University of the Sacred Heart, Rome, Italy.
Percutaneous coronary interventions (PCI) are increasingly used for high-risk patients with complex coronary artery disease. These minimally invasive procedures show encouraging efficacy and improve health status, even in patients previously deemed inoperable.
Area of Science:
- Interventional Cardiology
- Cardiovascular Medicine
- Minimally Invasive Surgery
Background:
- Historically, patients with coronary heart disease unsuitable for surgery faced high mortality.
- Minimally invasive percutaneous coronary interventions (PCI) evolved from low-risk to complex cases.
- There is a growing trend of performing PCI in high-risk, complex patients, increasing resource demands.
Purpose of the Study:
- To review the current literature on the definition of high-risk PCI.
- To explore the implications of high-risk PCI in interventional cardiology.
- To assess the efficacy and health status gains of PCI in high-risk populations.
Main Methods:
- Literature review of studies defining and evaluating high-risk PCI.
- Analysis of clinical factors contributing to high-risk PCI definitions.
- Comparison of outcomes between high-risk and low-risk PCI patients.
Main Results:
- High-risk PCI definitions integrate patient comorbidities, disease complexity, and hemodynamic status.
- Key factors include diabetes, COPD, CKD, frailty, advanced age, multi-vessel disease, left main disease, CTOs, bifurcations, and ventricular dysfunction.
- PCI in high-risk patients demonstrates encouraging efficacy and significant improvements in health status compared to low-risk groups.
Conclusions:
- Treating high-risk patients with PCI is increasingly recognized as relevant and appropriate.
- Current guidelines emphasize the suitability of percutaneous interventions for complex, high-risk cardiovascular cases.
- PCI offers a viable and effective revascularization strategy for patients previously excluded from treatment.
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