percent stenosis
Quantitative measure of coronary artery narrowing expressed as percentage diameter reduction compared to normal vessel caliber.
Full Definition
Percent stenosis represents the quantitative assessment of coronary artery narrowing, expressed as the percentage reduction in vessel diameter compared to the normal reference diameter. This measurement is typically obtained through coronary angiography, CT angiography, or other imaging modalities. Stenosis severity is classified as mild (less than 50%), moderate (50-70%), or severe (greater than 70%), with implications for symptoms, prognosis, and treatment decisions. Accurate stenosis assessment is crucial for determining the need for revascularization versus medical management.
Usage
Usage note: Use 'percent stenosis' rather than 'percentage stenosis' in clinical documentation.
In Context
- "Coronary angiography revealed 85% stenosis in the left anterior descending artery requiring intervention." — Cardiac catheterization report
- "The patient had moderate 60% stenosis in multiple vessels suitable for medical management." — Clinical assessment