Diastolic Function Assessment in Cardiac Systems

Diastolic function refers to the ability of the heart, particularly the left ventricle, to relax and fill with blood during the diastolic phase of the cardiac cycle. Impairment of this process may precede overt systolic dysfunction and is a key determinant of symptoms in heart failure with preserved ejection fraction. The gold standard for measuring diastolic pressures remains invasive catheterisation, yet non-invasive imaging has become the mainstay for both clinical diagnosis and research. Transthoracic echocardiography offers multiple validated indices—mitral inflow velocities, tissue Doppler velocities, left atrial size and deformation metrics—often interpreted via an algorithmic approach to infer filling pressures and chamber compliance. Cardiac magnetic resonance with four-dimensional flow mapping provides complementary information on intracavitary flow dynamics and left atrial function. Emerging techniques aim to simplify multi-parametric algorithms into single continuous variables or visual scoring systems to improve reproducibility and prognostic stratification. The global burden of heart failure and the rise of materials such as portable ultrasound underline the practical significance of robust diastolic assessment. Standardisation of protocols, integration of novel strain imaging and non-invasive pressure estimation herald a more precise, patient-centred evaluation of diastolic physiology in both ambulatory and critical care settings.

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Diastolic Function Assessment in Cardiac Systems publication trend

The graph below shows the total number of articles in diastolic function assessment in cardiac systems across all publications each year (not limited to Nature Index journals).

Technical terms

Diastolic function: The ability of the ventricles to relax, recoil and fill with blood during the cardiac cycle.

E/e′ ratio: The ratio of mitral inflow peak E velocity to tissue Doppler early diastolic annular velocity, used as a surrogate for left ventricular filling pressure.

Pulmonary artery wedge pressure (PAWP): An invasive measurement reflecting left atrial pressure and left ventricular end-diastolic pressure.

4D flow magnetic resonance: A cardiac MRI technique capturing time-resolved three-dimensional blood flow velocities throughout the cardiac chambers.

Left atrial reservoir strain: A measure of atrial deformation during ventricular systole, indicating atrial compliance and filling pressure.

References

1. Echocardiographic estimation of pulmonary artery wedge pressure: invasive derivation, validation, and prognostic association beyond diastolic dysfunction grading. European Heart Journal - Cardiovascular Imaging (2023).
2. MR 4D flow–derived left atrial acceleration factor for differentiating advanced left ventricular diastolic dysfunction. European Radiology (2023).
3. The assessment of left ventricular diastolic function: guidance and recommendations from the British Society of Echocardiography. Echo Research & Practice (2024).