Cardiovascular Hemodynamics and Heart Failure Mechanisms
Summary
Cardiovascular hemodynamics describes the forces involved in blood circulation and their impact on cardiac performance. Central to this field are parameters such as blood pressure, flow velocity and chamber pressures, which together determine cardiac workload and efficiency. In heart failure, maladaptive remodelling alters ventricular geometry and impairs pump function. Concentric hypertrophy arises in response to pressure overload, increasing wall thickness to normalise wall stress, whereas eccentric hypertrophy follows volume overload, dilating the chamber and thinning the wall. Interstitial fibrosis and cardiomyocyte hypertrophy further stiffen the myocardium, compromising diastolic filling and systolic output. Disturbances in ventricular–arterial coupling exacerbate energy inefficiency, precipitating a cycle of neurohormonal activation, progressive remodelling and symptomatic heart failure. Advances in imaging and computational modelling now permit detailed characterisation of chamber shape, strain patterns and tissue composition, shedding new light on the interplay between hemodynamic stressors and cellular mechanisms that underpin disease progression.
Research from Nature Portfolio
A comparative analysis of independent left ventricular atlases has demonstrated that principal components of three-dimensional shape capture risk-factor associations more robustly than conventional mass and volume metrics. By applying two distinct atlas construction methods to cardiac magnetic resonance scans, researchers showed that morphometric variations linked to hypertension, diabetes and dyslipidaemia could be quantified and visualised with higher predictive accuracy. These findings highlight the potential of atlas-based modelling for early detection of adverse remodelling and for stratifying patients according to subclinical risk profiles.
Cardiovascular Hemodynamics and Heart Failure Mechanisms publication trend
The graph below shows the total number of articles in cardiovascular hemodynamics and heart failure mechanisms across all publications each year (not limited to Nature Index journals).
Technical terms
Hemodynamics: The study of blood flow dynamics and the forces involved in circulation.
Ejection fraction: The percentage of end-diastolic volume ejected from a ventricle during systole.
Concentric hypertrophy: Thickening of ventricular walls in response to pressure overload, reducing chamber radius.
Eccentric hypertrophy: Dilation of the ventricular chamber with relative wall thinning due to volume overload.
Extracellular volume (ECV): A CMR-derived measure of interstitial fibrosis reflecting expansion of the myocardial extracellular matrix.
References
- Effect of Sacubitril/Valsartan vs Valsartan on Left Atrial Volume in Patients With Pre–Heart Failure With Preserved Ejection Fraction. JAMA Cardiology (2023).
- The impact of cardiovascular risk factors on cardiac structure and function: Insights from the UK Biobank imaging enhancement study. PLOS ONE (2017).
- Independent Left Ventricular Morphometric Atlases Show Consistent Relationships with Cardiovascular Risk Factors: A UK Biobank Study. Scientific Reports (2019).
- Precursors of Hypertensive Heart Phenotype Develop in Healthy Adults A High-Resolution 3D MRI Study. JACC Cardiovascular Imaging (2015).
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