Background: Two fetuses with endocardial fibroelastosis, one with critical aortic stenosis and one with high-output cardiac failure due to chorioangiomatosis, are presented to evaluate the correlation between Doppler echocardiographic findings, the fetal clinical condition and the anatomical substrate found at postmortem.
Methods: Doppler measurements of cardiac function (systolic, diastolic and global) and a cardiovascular score incorporating five parameters of fetal well-being were recorded.
Results: In the fetus with critical aortic stenosis, the cardiovascular score was diminished, there was no hydrops, the systolic and global cardiac function indices were within normal limits but the diastolic function indices were abnormal. The fetus with high-output cardiac failure was hydropic, the cardiovascular score was diminished and abnormal Doppler indices of systolic, diastolic and global cardiac function were found. In both fetuses, abnormalities in the measured Doppler parameters were found consistent with clinical cardiac dysfunction and the postmortem findings.
Conclusion: Recognition of abnormal diastolic function Doppler indices may assist in earlier identification of fetal cardiac compromise.
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http://dx.doi.org/10.1159/000313426 | DOI Listing |
Circ Heart Fail
January 2025
Bruce Rapport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel (I.R.H., N.K., C.B., O.C.).
Background: The therapeutic armamentarium for heart failure with preserved ejection fraction (HFpEF) remains notably constrained. A factor contributing to this problem could be the scarcity of in vitro models for HFpEF, which hinders progress in developing new therapeutic strategies. Here, we aimed at developing a novel, comorbidity-inspired, human, in vitro model for HFpEF.
View Article and Find Full Text PDFCirc Cardiovasc Interv
January 2025
Department of Cardiac Surgery, University of Michigan, Ann Arbor (G.A.).
Background: The association, if any, between the transmitral mean pressure gradient (TMPG) after mitral transcatheter edge-to-edge repair and 1-year mortality is controversial in patients undergoing mitral transcatheter edge-to-edge repair with the MitraClip system. We sought to estimate the association between intraoperatively measured residual mitral regurgitation (rMR) and TMPG and 1-year mortality among patients undergoing mitral transcatheter edge-to-edge repair to facilitate decisions on additional devices.
Methods: In patients with severe secondary (functional) MR, we analyzed registry data using generalized estimating equations.
Biomater Transl
November 2024
Cardiac Regeneration and Ageing Lab, School of Medicine, Shanghai University, Shanghai, China.
Cardiovascular diseases cause significant morbidity and mortality worldwide. Engineered cardiac organoids are being developed and used to replicate cardiac tissues supporting cardiac morphogenesis and development. These organoids have applications in drug screening, cardiac disease models and regenerative medicine.
View Article and Find Full Text PDFBiomater Transl
November 2024
Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, School of Basic Medical Science, Southern Medical University, Guangzhou, Guangdong Province, China.
Cardiovascular diseases are a leading cause of death worldwide, and effective treatment for cardiac disease has been a research focal point. Although the development of new drugs and strategies has never ceased, the existing drug development process relies primarily on rodent models such as mice, which have significant shortcomings in predicting human responses. Therefore, human-based in vitro cardiac tissue models are considered to simulate physiological and functional characteristics more effectively, advancing disease treatment and drug development.
View Article and Find Full Text PDFArrhythm Electrophysiol Rev
December 2024
Heart Rhythm Research Group, Division of Biomedical Sciences, Warwick Medical School, Clinical Sciences Research Laboratory Coventry, UK.
Functional substrate mapping has emerged as an essential tool for electrophysiologists, overcoming many limitations of conventional mapping techniques and demonstrating favourable long-term outcomes in clinical studies. However, a consensus on the definition of 'functional substrate' mapping remains elusive, hindering a structured approach to research in the field. In this review, we highlight the differences between 'functional mapping' techniques (which assess tissue response to the 'electrophysiological stress' using short coupled extrastimuli) and those highlighting regions of slow conduction during sinus rhythm.
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