Echocardiographic evaluation of mitral valve regurgitation

Smer, Aiman; Nanda, Navin C.; Akdogan, Raziye E.; Elmarzouky, Zeyad M.; Dulal, Subash

doi:10.20517/2574-1225.2020.36

Cited by 3 publications

(3 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…TTE also gives information on left atrium and ventricle remodeling, estimation of LV diastolic pressure and pulmonary systolic pressure derived from tricuspid regurgitation and right atrial pressure. Transesophageal echocardiography (TEE) is the most sensitive tool for MR quantification and anatomical structure description because the mitral valve is a posterior structure and TEE probe is much closer in the near field of the TEE imaging plane compare to TTE 36 . Therapeutic decision making in MVP and significant MR is well defined by current guidelines 15 but this is not the topic of the present paper.…”

Section: Complex Ventricular Arrhythmias Sudden Cardiac Arrest and Mvpmentioning

confidence: 96%

See 1 more Smart Citation

Transthoracic echocardiography for arrhythmic mitral valve prolapse: Phenotypic characterization as first step

et al. 2022

View full text Add to dashboard Cite

Mitral valve prolapse (MVP) is the most frequent valvulopathy with a prevalence of 1.2%–2.4% in general population and it is characterized by a benign course. Although it can be associated with some complications, ventricular arrhythmias (VA) and sudden cardiac death (SCD) as ultimate expressions, are the most worrying. The estimated risk of SCD in MVP is between 0.2% and 1.9% per year including both MVP patients with left ventricular (LV) dysfunction due to severe MR and MVP patients without significant MR. The latter ones constitute a particular phenotype called “malignant MVP” characterized by bileaflet myxomatous prolapse, ECG repolarization abnormalities and complex VAs (c‐VAs) with polymorphic/right bundle branch block morphology (RBBB) and LV fibrosis of the papillary muscles (PMs) and inferobasal wall secondary to mechanical stretching visualized as late gadolinium enhancement (LGE) areas by cardiac magnetic resonance (CMR). In MVP, the first diagnostic approach is transthoracic echocardiography (TTE) that defines the presence of mitral annular disjunction (MAD) which seems to be associated with “arrhythmic MVP” (AMVP). From an ECG point of view, AMVP is characterized by frequent premature ventricular contractions (PVCs) arising from one or both PMs, fascicular tissue, and outflow tract, as well as by T‐wave inversion in the inferolateral leads. The aim of the present paper is to describe TTE red flags that could identify MVP patients at high risk to develop complex arrhythmias as supported by the corresponding findings of LGE‐CMR and anatomy studies. TTE could be a co‐partner in phenotyping high‐risk arrhythmic MVP patients.

show abstract

Section: Complex Ventricular Arrhythmias Sudden Cardiac Arrest and Mvpmentioning

confidence: 96%

“…Clinically, MVP can be classified as primary or non-syndromic MVP (sporadic or familial forms) and secondary or syndromic MVP (associated with connective tissue disorder 36 Therapeutic decision making in MVP and significant MR is well defined by current guidelines 15 but this is not the topic of the present paper.…”

Section: Mitral Valve Prolapsementioning

confidence: 99%

Transthoracic echocardiography for arrhythmic mitral valve prolapse: Phenotypic characterization as first step

et al. 2022

View full text Add to dashboard Cite

show abstract

“…They were considered three degrees of MR corresponding to EROA ¼ 0:26 cm 2 , EROA ¼ 0:39 cm 2 , and EROA ¼ 0:52 cm 2 , respectively, for mild, moderate, and severe. [21][22][23][24][25] For each of them, the same modulation of asymmetry was analyzed, for a total of 25 Â 3 simulations.…”

Section: A Geometriesmentioning

confidence: 99%

Mitral valve asymmetry in healthy, pathological, and repaired cases

Collia

2021

Physics of Fluids

View full text Add to dashboard Cite

The entry of blood into the left ventricle is regulated by the two valve leaflets. Mitral valve prolapse is the primary cause of mitral regurgitation. Mitral valve repair is the gold standard therapeutic procedure for patients with degenerative mitral valve regurgitation and follows two fundamental principles: restoring a good coaptation surface of the flap and correcting annular dilation. This study presents a first step in the direction of addressing the influence of valve geometry on valve fluid dynamics and mitral regurgitation. To this end, it develops a systematic analysis to identify how the level of regurgitation and the efficiency of flow transit in the left ventricle depend on the degree of asymmetry of the leaflets. The analysis is performed starting from a mathematically designed mitral valve and then extended to the actual valves extracted from medical imaging. The specific objective is to evaluate the changes in mitral regurgitation associated with the symmetrical properties of the mitral valve. The broader aim is to begin building physics-based means for evaluating repair options and prosthetic design. Results showed that valve shape does not affect flow; sub-volumes are similar to inflow and vary to outflow due to the presence of false regurgitation under healthy/repaired conditions and regurgitation under pathological conditions affecting the amount of direct flow, delayed and finally the Stroke volume. The best valve asymmetry point was found to be 0.25, while the optimal range was between 0.4 and 0.2, giving an important suggestion to valve surgery.

show abstract

The Potential of Using Websites for Communication of Political Parties: The Case of Slovakia Before the 2020 Elections

Šindleryová

Garaj

2022

SJPS

View full text Add to dashboard Cite

Technological advances and the use of websites have become mandatory tool for any political entity trying to succeed in the competition for votes. The main objective of the study is to identify the level of effectiveness of political communication on the websites of selected political parties in Slovakia. The evaluation is based on the application of the framework for functionality and effectiveness of communication of political parties and their candidates on websites. According the framework applied, the partial objectives represent the identification of information flows on website in five different ways: from the bottom up, from the top down, horizontal, asynchronous and synchronous. A structured review of the research on the issue provides a basic perspective for identifying similarities, differences, challenges, and positives, as well as the possibility to carry out a comprehensive confrontation with the study’s findings. The analysis focuses on the environment of the Slovak Republic, looking at the example of eight selected political parties from the period of the last elections – 2020. The data collection used techniques according to the nature of the examined indicators set according to the framework. To evaluate the data, we apply basic statistical analyses with a comparative form of presentation. The findings demonstrate a medium to higher degree of effectiveness of the communication of selected political parties on the websites. The quality and scope of the information provided on websites is also currently related to the length of time in the party system, regardless length of representation in the parliament. According to study results the deficits primarily appear when providing answers to questions outside of published information, using an interactive form of content or more active cooperation with partner websites. The observed state of the selected cases demonstrates the one-way nature of the provision of information from the subject to the recipient.

show abstract

Echocardiographic evaluation of mitral valve regurgitation

Cited by 3 publications

References 36 publications

Transthoracic echocardiography for arrhythmic mitral valve prolapse: Phenotypic characterization as first step

Transthoracic echocardiography for arrhythmic mitral valve prolapse: Phenotypic characterization as first step

Mitral valve asymmetry in healthy, pathological, and repaired cases

The Potential of Using Websites for Communication of Political Parties: The Case of Slovakia Before the 2020 Elections

Contact Info

Product

Resources

About