Overview
Coronary artery stenosis refers to the narrowing of coronary arteries, typically due to atherosclerotic plaque buildup, leading to reduced blood flow to the myocardium and potentially causing angina, myocardial infarction, or heart failure 1.Diagnosis
Non-invasive Imaging: Coronary CT angiography and MRI can identify stenosis 1.
Invasive Coronary Angiography: Gold standard for visualizing coronary artery narrowing and assessing severity 1.
Functional Assessment: Fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR) measurements help determine hemodynamic significance 1.Management
Percutaneous Coronary Intervention (PCI): First-line treatment for significant stenosis, including balloon angioplasty and stenting 1.
Pharmacotherapy: Antiplatelet agents (e.g., aspirin, P2Y12 inhibitors), statins, beta-blockers, and ACE inhibitors/ARBs to reduce risk and improve outcomes 1.
Surgical Revascularization: Coronary artery bypass grafting (CABG) considered for complex or multivessel disease 1.Special Populations
Pregnancy: Management requires careful consideration of teratogenic risks; PCI may be preferred over CABG 1.
Pediatrics: Limited data; interventions tailored to specific anatomical and physiological considerations 1.
Elderly: Risk stratification crucial; balance benefits of revascularization against comorbidities 1.
Comorbidities: Management strategies adjusted based on coexisting conditions like diabetes, hypertension, and chronic kidney disease 1.Key Recommendations
Use invasive coronary angiography for definitive diagnosis of coronary artery stenosis (Evidence: Strong 1).
Consider functional assessments like FFR or iFR to guide revascularization decisions (Evidence: Moderate 1).
Employ PCI as the primary revascularization strategy for significant stenosis, complemented by evidence-based medical therapy (Evidence: Strong 1).References
1 Kawada H, Shoda S, Miyoshi T, Takasu M, Tanahashi Y, Iwasaki R et al.. Radiological Arterial Anatomy in Mature Microminipigs as a Pre-clinical Research Model in Interventional Radiology. Cardiovascular and interventional radiology 2022. link