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Robust Association Between Changes in Coronary Flow Capacity Following Percutaneous Coronary Intervention and

Rikuta Hamaya1,2, Taishi Yonetsu3, Kodai Sayama4

  • 1Division of Preventive Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, United States.

Frontiers in Cardiovascular Medicine
|July 5, 2022
PubMed

Insights

Changes in coronary flow capacity (CFC) after percutaneous coronary intervention (PCI) predict lower risk of target vessel failure in chronic coronary syndrome patients. Pre-PCI CFC status largely determines these beneficial changes.

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Physiology

Background:

  • Coronary flow capacity (CFC) is a key physiological marker for assessing myocardial ischemia.
  • Its role in guiding percutaneous coronary intervention (PCI) is recognized, but changes in CFC post-PCI remain understudied.
  • Understanding these changes is crucial for optimizing PCI strategies.

Purpose of the Study:

  • To investigate the determinants of delta CFC, the change in CFC status after PCI.
  • To evaluate the prognostic significance of delta CFC for clinical outcomes.
  • To explore the relationship between pre-PCI CFC status and post-PCI changes.

Main Methods:

  • Analysis of a single-center registry including 450 patients with chronic coronary syndrome (CCS).
  • Patients underwent fractional flow reserve (FFR)-guided PCI with pre- and post-PCI invasive coronary physiological assessments.
  • Thermodilution-derived CFC categories were used to assess changes and their association with target vessel failure (TVF).

Main Results:

  • A significant inverse association was found between improvement in CFC categories and the risk of incident TVF.
  • Each one-category improvement in CFC status post-PCI was associated with a 39% reduction in TVF hazard after adjustment.
  • Pre-PCI CFC status was a major predictor of post-PCI CFC changes.

Conclusions:

  • Changes in CFC following PCI are associated with reduced risk of TVF in CCS patients.
  • These findings suggest a mechanistic link between PCI, improved coronary physiology, and better vessel-oriented outcomes.
  • Delta CFC provides valuable prognostic information and may refine PCI decision-making.
Abstract

Keywords:
coronary artery diseasecoronary flow capacitycoronary flow reservefractional flow reservepercutaneous coronary intervention

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