The E/e’ ratio in cardiac ultrasound is a critical non-invasive measure used to assess left ventricular diastolic function and filling pressures. It’s calculated by dividing the early diastolic mitral inflow velocity (E wave) by the early diastolic mitral annular velocity (e’ wave), reflecting the relationship between left atrial pressure and left ventricular relaxation. This ratio is invaluable for diagnosing diastolic dysfunction and heart failure with preserved ejection fraction (HFpEF).
Understanding the E/e’ ratio is essential for cardiologists and sonographers for precise cardiac assessments. An elevated E/e’ ratio often indicates increased left ventricular filling pressures, aiding in guiding patient management and treatment strategies. Optimizing ultrasound techniques to accurately obtain these Doppler measurements is key for reliable diagnostic outcomes in cardiovascular imaging.
