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Cardiology484 papers

Non-obstructive atherosclerosis of coronary artery

Last edited: 4/22/2026

Overview

Non-obstructive atherosclerosis of coronary arteries refers to atherosclerotic disease without significant luminal stenosis, often manifesting as ischemia and non-obstructive coronary artery disease (INOCA), potentially due to coronary microvascular dysfunction (CMD) or vasospastic angina (VSA). 1

Diagnosis

  • Key Diagnostic Criteria: Identification of ischemia in the absence of significant coronary artery stenosis.
  • Recommended Tests:
  • - Coronary angiography to rule out obstructive CAD. - Functional assessments such as stress echocardiography or myocardial perfusion imaging. - Biomarker analysis, including extracellular vesicles (EVs) for differentiating INOCA endotypes.
  • Grading: Utilize imaging findings and clinical symptoms to classify into CMD, VSA, or mixed endotypes based on EV ratios (e.g., CD144+ EVs to total EVs). 1
  • Management

  • First-Line Treatments:
  • - Lifestyle modifications including diet, exercise, and smoking cessation. - Antiplatelet therapy (e.g., aspirin).
  • Adjunctive Treatments:
  • - Optimizing blood pressure control with ACE inhibitors or ARBs. - Cholesterol management with statins. - Beta-blockers for symptom control in vasospastic angina.
  • Specific Drug Classes/Doses: Not specified in the provided abstracts.
  • Special Populations

  • Pregnancy: Limited data; management focuses on symptom control and risk factor modification. [No specific evidence in provided abstracts]
  • Pediatrics: Not addressed in the provided abstracts.
  • Elderly: Tailored approach focusing on multimorbidity management and fall prevention alongside cardiovascular risk reduction. [No specific evidence in provided abstracts]
  • Comorbidities: Management should consider coexisting conditions like hypertension and diabetes, emphasizing comprehensive risk factor control. [No specific evidence in provided abstracts]
  • Key Recommendations

  • Utilize extracellular vesicle analysis, particularly the ratio of endothelial EVs (CD144+) to total EVs, to differentiate between INOCA endotypes for personalized management strategies. (Evidence: Moderate) 1
  • Employ functional testing (e.g., stress echocardiography) alongside coronary angiography to diagnose non-obstructive coronary atherosclerosis accurately. (Evidence: Moderate) 1
  • Implement comprehensive lifestyle modifications and pharmacological interventions targeting risk factors such as hypertension, hyperlipidemia, and diabetes in patients with non-obstructive atherosclerosis. (Evidence: Expert opinion) [No specific evidence in provided abstracts]
  • References

    1 Gąsecka A, Szolc P, van der Pol E, Niewiara Ł, Guzik B, Kleczyński P et al.. Endothelial Cell-Derived Extracellular Vesicles Allow to Differentiate Between Various Endotypes of INOCA: A Multicentre, Prospective, Cohort Study. Journal of cardiovascular translational research 2025. link 2 Wolverson MK, Nouri S, Joist JH, Sundaram M, Heiberg E. The direct visualization of blood flow by real-time ultrasound: clinical observations and underlying mechanisms. Radiology 1981. link

    Original source

    1. [1]
      Endothelial Cell-Derived Extracellular Vesicles Allow to Differentiate Between Various Endotypes of INOCA: A Multicentre, Prospective, Cohort Study.Gąsecka A, Szolc P, van der Pol E, Niewiara Ł, Guzik B, Kleczyński P et al. Journal of cardiovascular translational research (2025)
    2. [2]
      The direct visualization of blood flow by real-time ultrasound: clinical observations and underlying mechanisms.Wolverson MK, Nouri S, Joist JH, Sundaram M, Heiberg E Radiology (1981)

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