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Interprofessional care for coronary artery disease includes pharmacological therapy and revascularization procedures.Pharmacological therapy for Coronary Artery Disease (CAD) aims to manage symptoms, prevent complications, and improve patient outcomes through various classes of medications:Antiplatelet Agents:Aspirin and Clopidogrel: These medications inhibit platelet aggregation, preventing blood clots, which is crucial for avoiding heart attacks and strokes. Doctors often prescribe these...
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Coronary Collaterals: A Comprehensive Review.

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Stronger coronary collateral circulation, which connects arteries, improves heart health after blockages. Assessing its function, not just appearance, is key for better patient outcomes and guiding treatments.

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Area of Science:

  • Cardiovascular Medicine
  • Physiology
  • Biomedical Engineering

Background:

  • Coronary collateral circulation comprises pre-existing arterial connections that enlarge during coronary stenosis.
  • The review examines the developmental, anatomic, and regulatory aspects of collateral growth.

Purpose of the Study:

  • To review the developmental and anatomic basis of coronary collateral circulation.
  • To summarize factors modulating collateral growth.
  • To appraise assessment methods and propose a function-first framework for clinical integration.

Main Methods:

  • Literature review tracing developmental and anatomic basis.
  • Appraisal of assessment methods including visual angiography, collateral flow index, intracoronary electrocardiography, cardiac MRI, and PET.
  • Analysis of therapeutic strategies and role of AI.

Main Results:

  • Stronger collaterals correlate with smaller infarcts, less microvascular injury, and better ventricular recovery in acute infarction and chronic total occlusion.
  • Anatomic assessment alone may not reflect true perfusion.
  • Artificial intelligence offers potential for standardized interpretation and function estimation.

Conclusions:

  • A function-first approach to assessing coronary collateral circulation is superior to visual grading.
  • Therapeutic strategies include exercise, counterpulsation, and emerging metabolic/biologic options.
  • Integrating collateral assessment into routine care using a function-first framework is proposed.