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Area of Science:

  • Cardiovascular Physiology
  • Interventional Cardiology

Background:

  • Coronary circulation comprises epicardial, microvascular, and venous compartments, each influencing vascular resistance.
  • Cardiologists often focus on epicardial diseases, neglecting the microvascular and venous systems, which are significant contributors to ischemia.
  • Coronary microvascular disease is an emerging cause of ischemia, yet understanding and classification remain incomplete, with no specific therapies available.

Purpose of the Study:

  • To review the role of coronary sinus interventions in treating ischemic heart disease.
  • To highlight the importance of coronary microvascular disease and venous circulation in managing ischemic heart disease.
  • To discuss the potential of increasing coronary venous pressure for improving coronary perfusion.

Main Methods:

  • Literature review of studies on coronary circulation, microvascular disease, and coronary sinus interventions.
  • Analysis of diagnostic tools and their impact on studying coronary microcirculation.
  • Examination of invasive techniques, including surgical and catheter-based, for coronary sinus interventions.

Main Results:

  • Coronary microcirculation is increasingly recognized as a source of ischemia, necessitating advanced diagnostic tools.
  • Coronary sinus interventions aim to improve coronary perfusion by increasing venous pressure and redistributing blood flow.
  • Evidence suggests that modulating venous pressure may enhance coronary perfusion, offering a new therapeutic avenue.

Conclusions:

  • Coronary microvascular disease and venous circulation are critical, yet often overlooked, components of coronary circulation.
  • Coronary sinus interventions represent a promising approach for managing ischemic heart disease, particularly concerning microvascular dysfunction.
  • Further research is needed to fully elucidate the complexity of coronary venous circulation and optimize therapeutic strategies.