Intermediate
Technical
In the Industry Vocabulary Test
diastolic dysfunction
Impaired ventricular relaxation or filling, assessed through echocardiographic parameters including E/A ratio and tissue Doppler measurements.
Full Definition
Diastolic dysfunction refers to abnormal ventricular relaxation, compliance, or filling properties of the heart, typically evaluated using echocardiography. It represents a key component of heart failure with preserved ejection fraction (HFpEF) and is graded from mild (Grade I) to severe (Grade III) based on parameters such as mitral inflow patterns, pulmonary vein flow, and tissue Doppler imaging. Early identification through imaging is crucial for therapeutic intervention and prognosis assessment.
Usage
Usage note: Always specify the grade (I-III) when present in imaging reports.
In Context
- "The echocardiogram revealed Grade II diastolic dysfunction with an elevated E/e' ratio of 15." — Cardiology consultation note
- "Assessment for diastolic dysfunction should include tissue Doppler imaging of the mitral annulus." — Imaging protocol guideline
Also known as
diastolic heart failure
impaired relaxation
Contrasted with
normal diastolic function
Don't confuse with
systolic dysfunction
diastolic murmur