hemodynamic assessment
Measurement of pressure gradients and flow parameters across coronary stenoses to determine physiological significance and guide treatment decisions.
Full Definition
Hemodynamic assessment encompasses the comprehensive evaluation of coronary blood flow dynamics and pressure relationships to determine the physiological impact of coronary stenoses beyond angiographic appearance alone. This assessment typically involves pressure wire measurements across lesions, calculating indices such as fractional flow reserve or instantaneous wave-free ratio to quantify the functional significance of intermediate stenoses. Hemodynamic evaluation helps distinguish lesions requiring intervention from those suitable for medical management, particularly important when angiographic assessment is ambiguous. The approach has revolutionized interventional decision-making by providing objective physiological data, reducing unnecessary procedures, and improving long-term outcomes. Advanced hemodynamic assessment may include microvascular function evaluation and computational flow dynamics modeling.
Usage
Usage note: Emphasizes functional rather than purely anatomical evaluation; distinguish from angiographic assessment.
In Context
- "Hemodynamic assessment revealed non-significant stenosis despite 60% angiographic narrowing." — Physiological testing report
- "Current guidelines recommend hemodynamic assessment for intermediate lesions before intervention." — Clinical decision-making protocol