Myocardial Work Assessment in Cardiovascular Dynamics
Summary
Myocardial work assessment has emerged as an advanced echocardiographic approach for quantifying cardiac performance by integrating left ventricular deformation with non-invasive pressure estimation. Unlike conventional ejection fraction or strain measurements, which are influenced by loading conditions, myocardial work derives indices from pressure–strain loops constructed using speckle-tracking data and brachial arterial pressure. This method yields metrics of energy transfer—constructive work contributing to effective contraction and wasted work reflecting inefficiencies—together forming a global work index and work efficiency. By offering a loading-independent evaluation of both systolic and diastolic phases, myocardial work bridges the gap between purely mechanical and haemodynamic analyses. It has demonstrated utility across a spectrum of conditions, from metabolic disturbances to organ-specific disease, guiding risk stratification, therapy optimisation and early detection of subclinical dysfunction. The growing evidence base underscores its potential to reshape clinical practice and inform personalised management in cardiovascular care.
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Myocardial Work Assessment in Cardiovascular Dynamics publication trend
The graph below shows the total number of articles in myocardial work assessment in cardiovascular dynamics across all publications each year (not limited to Nature Index journals).
Technical terms
Myocardial work: A composite measure of cardiac performance calculated from pressure–strain loops that integrates ventricular deformation with estimated intracavitary pressure.
Pressure–strain loop: A graphical representation of myocardial strain against instantaneous pressure, outlining phases of contraction and relaxation.
Global work index (GWI): The total area within the pressure–strain loop, representing cumulative work performed by the left ventricle during systole.
Global constructive work (GCW): The portion of mechanical energy contributing to effective myocardial shortening and thickening during ejection.
Global wasted work (GWW): The fraction of energy expended in ineffective deformation, such as lengthening during systole or shortening during isovolumic phases.
Global work efficiency (GWE): The ratio of constructive work to the sum of constructive and wasted work, expressed as a percentage to indicate energetic efficiency.
References
- Assessment of left ventricular function in patients with type 2 diabetes mellitus by non-invasive myocardial work. Frontiers in Endocrinology (2023).
- Evaluation of subclinical left ventricular systolic dysfunction in obese patients by global myocardial work. Diabetology & Metabolic Syndrome (2023).
- Myocardial work in chronic kidney disease: insights from the CPH-CKD ECHO Study. Clinical Research in Cardiology (2024).
- Myocardial Work: Methodology and Clinical Applications. Diagnostics (2021).
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