ArticleOpen heart2026
Left ventricular mechanical dispersion in a middle-aged population: associations with subclinical cardiac remodelling and cardiovascular risk.
Article in Open heart, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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8 authors.
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Abstract
backgroundHeterogeneous myocardial contraction is common in myocardial disease and linked to ventricular arrhythmias, but its frequency and relevance in the general population remain unclear. This study aimed to investigate the frequency of increased left ventricular mechanical dispersion (LVMD) and to examine its clinical and imaging correlates in a population-based cohort.
methodsLVMD was assessed using speckle-tracking echocardiography in 3997 participants aged 50-64 years (51% women) from the Swedish Cardiopulmonary Bioimage Study. The upper limit of normal (ULN) for LVMD was defined as the 95th percentile in a subgroup (n=1165) without cardiovascular disease or risk factors. In the full cohort, cardiovascular risk factors, including coronary artery calcium score (CACS) and left ventricular mass index (LVMI) from cardiac CT, were compared between subjects with and without high LVMD, and predictors of high LVMD were assessed using multivariable regression.
resultsThe ULN for LVMD was 53 ms and LVMD>ULN was present in 11.8% of the full cohort. These individuals were older, more often male, had higher body mass index (BMI) and more frequently had hypertension, hyperlipidaemia and previous myocardial infarction. They also had higher LVMI (57±11 g vs 52±11 g, p<0.001). CACS ≥100 was present in 17.8% vs 10.3% (OR 1.90, 95% CI 1.46 to 2.48, p<0.001) in those with increased versus normal LVMD. Age, BMI, LVMI and heart rate were independently associated with LVMD.
conclusionsLVMD above ULN was observed in 11.8% of this middle-aged general population sample and was associated with a more adverse cardiovascular risk profile and markers of cardiac remodelling, particularly higher LVMI and larger indexed left ventricular volumes.
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