Intermediate
Technical
IVT
diastolic dysfunction
Abnormal relaxation or filling of the left ventricle during the resting phase of the cardiac cycle.
Full Definition
Diastolic dysfunction refers to impaired ventricular relaxation, increased ventricular stiffness, or both, leading to abnormal filling of the left ventricle during diastole. This condition can occur with or without systolic dysfunction and is a key component in heart failure with preserved ejection fraction. Assessment typically involves echocardiographic evaluation of mitral inflow patterns, tissue Doppler imaging, and left atrial volume measurements.
Usage
Usage note: Often abbreviated as DD in clinical notes, but should be spelled out in formal documentation.
In Context
- "The patient's echocardiogram revealed Grade II diastolic dysfunction with elevated E/e' ratio." — Cardiology consultation note
- "Diastolic dysfunction was assessed using comprehensive Doppler echocardiography." — Research methodology
Also known as
impaired relaxation
diastolic heart failure
Contrasted with
normal diastolic function
Don't confuse with
systolic dysfunction
heart failure with reduced ejection fraction