Coronary Slow Flow Phenomenon: A Narrative Literature Review

Area of Science:

• Cardiology
• Vascular Biology
• Clinical Medicine

Background:

• Coronary slow flow (CSF) is characterized by delayed contrast filling in coronary arteries without obstructive coronary artery disease (CAD).
• Also known as Syndrome Y, CSF presents symptoms similar to acute coronary syndrome, affecting quality of life.
• Young male smokers are the most commonly affected demographic, experiencing chest pain, arrhythmias, and potentially sudden death.

Purpose of the Study:

• To review the current understanding of coronary slow flow (CSF) pathology.
• To highlight the clinical relevance and diagnostic challenges of CSF.
• To emphasize the need for further research into CSF's underlying mechanisms and effective treatments.

Main Methods:

• Literature review of existing studies on coronary slow flow (CSF).
• Analysis of clinical presentations, potential causes, and diagnostic criteria for CSF.
• Examination of treatment approaches and outcomes for patients with CSF.

Main Results:

• CSF is a recognized phenomenon, distinct from CAD, vasospasm, and post-procedural slow flow.
• Endothelial dysfunction is a suspected cause, with contributions from inflammation, atherosclerosis, and hematological factors.
• Oral calcium channel blockers (CCBs) show potential therapeutic benefit, though specific treatments are not established.

Conclusions:

• Coronary slow flow (CSF) is clinically significant, impacting patient well-being and requiring further investigation.
• Understanding the multifaceted pathology of CSF is crucial for developing targeted therapies.
• Continued research is recommended to fully elucidate CSF's mechanisms and improve patient management.