Right Ventricular Dysfunction in Heart Failure

Right ventricular dysfunction has emerged as a critical determinant of morbidity and mortality across the spectrum of heart failure. Traditionally overshadowed by left ventricular performance, the right ventricle’s complex geometry and its intimate relationship with pulmonary vascular load make its failure particularly insidious. Impairments in right ventricular contractility often arise secondary to elevated pulmonary pressures or intrinsic myocardial disease, leading to reduced cardiac output, systemic congestion and multi-organ dysfunction. Assessment strategies range from simple tricuspid annular plane systolic excursion measurements to advanced three-dimensional speckle-tracking echocardiography and cardiovascular magnetic resonance imaging, each offering unique insights into chamber geometry, strain patterns and ejection fraction. Prognostically, reduced right ventricular–pulmonary arterial coupling and lower ejection fractions portend a poorer outcome in both preserved and reduced left ventricular ejection fraction phenotypes. Ongoing challenges include early detection of subtle functional decline, standardisation of imaging protocols and development of therapies that directly target right ventricular load or contractile reserve. Clinically, integrating right ventricular metrics into risk stratification models refines patient selection for device therapy, guides pulmonary vasodilator use and informs the timing of transplantation or mechanical support. This shift towards biventricular assessment acknowledges the global significance of right ventricular health in optimising care for millions affected by heart failure worldwide.

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Recent investigations have reinforced the prognostic utility of non-invasive coupling indices. A systematic meta-analysis of tricuspid annular plane systolic excursion to pulmonary artery systolic pressure ratios across diverse heart failure cohorts confirmed that lower values are independently associated with higher rates of death and hospitalisation, highlighting its ease of use in routine echocardiographic practice. Advances in automated imaging have also been reported: a deep-learning algorithm trained on a broad spectrum of right ventricular pathologies substantially improved the accuracy of cardiovascular magnetic resonance-derived ejection fraction measurements, narrowing the gap with manual reference standards even in cases with complex anatomy. Large-scale registry data using gold-standard magnetic resonance techniques have further demonstrated that right ventricular systolic dysfunction is an independent predictor of all-cause mortality in patients with reduced left ventricular ejection fraction, with particular prognostic strength in early disease and specific subgroups such as those with renal impairment. Together, these studies underscore a trend towards precise quantification and early recognition of right ventricular failure to guide personalised therapeutic strategies.

Right Ventricular Dysfunction in Heart Failure publication trend

The graph below shows the total number of articles in right ventricular dysfunction in heart failure across all publications each year (not limited to Nature Index journals).

Technical terms

Tricuspid annular plane systolic excursion (TAPSE): An echocardiographic measure of right ventricular longitudinal shortening reflecting systolic function.

Pulmonary artery systolic pressure (PASP): The estimated peak pressure in the pulmonary artery derived from tricuspid regurgitation velocity, indicative of pulmonary vascular load.

Right ventricular–pulmonary arterial (RV–PA) coupling: The relationship between right ventricular contractile function and afterload, often approximated by TAPSE/PASP ratio.

Right ventricular ejection fraction (RVEF): The percentage of blood ejected by the right ventricle per heartbeat, typically measured by cardiovascular magnetic resonance.

Speckle-tracking echocardiography (STE): An imaging technique that tracks natural acoustic markers in the myocardium to quantify deformation and strain.

Cardiovascular magnetic resonance (CMR): A non-invasive imaging modality providing high-resolution measurements of cardiac volumes, function and tissue characterisation.

References

1. The prognostic impact of right ventricular-pulmonary arterial coupling in heart failure: a systematic review and meta-analysis. Heart Failure Reviews (2023).
2. Characteristics and prognostic value of right ventricular (dys)function in patients with non‐ischaemic dilated cardiomyopathy assessed with cardiac magnetic resonance imaging. ESC Heart Failure (2021).
3. Assessment of right ventricular size and function from cardiovascular magnetic resonance images using artificial intelligence. Journal of Cardiovascular Magnetic Resonance (2022).