Anatomy, Epidemiology And Aetiology Of Tricuspid Valve Disease And Its Impact On The Development Of Emerging Transcatheter Therapies
Funder
National Health and Medical Research Council
Funding Amount
$88,662.00
Summary
Tricuspid valve disease is common, associated with poor prognosis and has few available treatment options. The aim of this project is to improve our understanding of the burden of tricuspid valve disease, and the factors that drive its occurrence and progression. We also aim to improve our practice of pacemaker/defibrillator insertion (which can injury the tricuspid valve). Our investigations will help inform improvement in the treatment of this condition, including minimally invasive options.
Novel Multi-Modality Assessment Of Arrhythmic Risk And Disease Progression In Repaired Tetralogy Of Fallot Undergoing Redo-Pulmonary Valve Surgery Using 4D Cardiac MRI Flow And High Density 3D Electro-Anatomical Mapping.
Funder
National Health and Medical Research Council
Funding Amount
$110,703.00
Summary
Sudden death from arrhythmia is the most common cause of death in adults with tetralogy of Fallot, a type of congenital heart disease. It has been shown that dangerous arrhythmias can be induced in almost half of these patients when severe pulmonary valve disease is present. Our study will evaluate the potential for arrhythmias both before and after pulmonary valve surgery, using MRI and electrophysiological testing, to determine if these patients require defibrillators.
Valvular heart disease is a common cause of heart failure. Identification of the genetic causes of valvular heart disease has important implications in our understanding of these heart diseases, as well as translating these genetic discoveries into better diagnostic and prevention strategies in at-risk families. This research proposal seeks to perform a comprehensive clinical and genetic investigation of individuals and families with the two most common valvular heart diseases, mitral valve prol ....Valvular heart disease is a common cause of heart failure. Identification of the genetic causes of valvular heart disease has important implications in our understanding of these heart diseases, as well as translating these genetic discoveries into better diagnostic and prevention strategies in at-risk families. This research proposal seeks to perform a comprehensive clinical and genetic investigation of individuals and families with the two most common valvular heart diseases, mitral valve prolapse and congenital bicuspid aortic valve.Read moreRead less
Development Of Non-surgical Approach To Treating Tricuspid Regurgitation
Funder
National Health and Medical Research Council
Funding Amount
$266,427.00
Summary
Heart failure is a common problem in which the heart enlarges and contracts poorly. In association with enlargement of the heart, the heart valves also begin to fail causing further worsening of quality and length of life. Failure of the tricuspid valve occurs in upto 87% of patients with heart failure and presently the only treatment option is high risk heart surgery. We are developing a way of dealing with tricuspid valve failure that does not require cardiac surgery.
Clinical, Pathological And Genetic Basis Of Familial Valvular Heart Disease
Funder
National Health and Medical Research Council
Funding Amount
$133,351.00
Summary
Mitral valve prolapse and bicuspid aortic valve are two common valve syndromes that are characterized by remarkable clinical diversity, ranging from no symptoms to potentially life threatening complications, heart failure and sudden death. Both disorders seem to run in families in a significant proportion of patients and thus are likely to have genetic causes, which remains unknown to date. This project aims to identify the underlying genetic basis of these common familial valve syndromes.
Rheumatic heart disease (RHD) is rare in developed countries except in indigenous populations where there is a shortage of quality health care, overcrowding, poverty and poor nutrition as in remote Australia. Advanced RHD affects the heart valves which can lead to heart failure, an increased risk of stroke and infection of the heart. The aim of this research project will be to inform the development of rational and evidence-based recommendations for the management of advanced RHD.
Determinants Of Occurrence And Progression Of Aortic Stenosis In Bicuspid And Tricuspid Valves.
Funder
National Health and Medical Research Council
Funding Amount
$546,394.00
Summary
Aortic stenosis (AS) is a major cause of cardiac failure and mortality in ageing Australians. AS occurs both in bicuspid aortic valves (BAV;0.5-1% of the population) and in anatomically tricuspid valves. There is an associated incremental risk of myocardial infarction. The research will investigate patients with BAV and with early AS in tricuspid valves, in order to examine the potential roles of loss of nitric oxide effect and of oxidant stress as predictors of AS development.
Improving Cardiac Valve Implant Outcomes With Advanced Computer Simulation
Funder
National Health and Medical Research Council
Funding Amount
$593,367.00
Summary
This project focuses on improving heart valve procedures, specifically focusing on new transcatheter techniques of heart valve implantation. The research uses advanced imaging and computer simulation techniques to predict the outcome and improve minimally invasive heart procedures.
Understanding The Role That Cellular Hypoxia Plays In Normal Heart Development
Funder
National Health and Medical Research Council
Funding Amount
$522,773.00
Summary
Congenital heart defects (CHD) are the most common type of birth defects, being present in 6 out of every 1000 live births, and 10% of stillbirths. In addition to the danger of death during childhood, such heart defects also increase the risk of heart disease during adulthood. Our research project involves looking for the genetic causes of CHD. We are looking at two genes , called HIF1a and CITED2, for which we already have evidence that they are very important in allowing the heart to form norm ....Congenital heart defects (CHD) are the most common type of birth defects, being present in 6 out of every 1000 live births, and 10% of stillbirths. In addition to the danger of death during childhood, such heart defects also increase the risk of heart disease during adulthood. Our research project involves looking for the genetic causes of CHD. We are looking at two genes , called HIF1a and CITED2, for which we already have evidence that they are very important in allowing the heart to form normally within the embryo. Because the heart is the first organ to form in the embryo (during the first trimester), we cannot use humans to study this process. Instead we have two lines of mice which specifically lack either the HIF1a or CITED2 genes throughout the embryo. Both of these mouse lines have severe heart defects similar to some types of CHD seen in humans. However, removal of either of these genes also causes severe defects in other tissues, complicating our study. To overcome this problem, we will use a slightly different technique to remove either gene specifically in the entire developing heart of the embryo, while leaving the normal gene in the rest of the embryo. Thus we will be able for the first time to study the effects of these genes on the heart alone. We suspect that the defects in the hearts of such embryos will be of a particular sub-type of CHD. If this is true, in the future we hope to be able show that mutation of either of these genes will cause a specific type of human CHD. This will enable genetic screening of families with a history of CHD, assist in genetic counselling, and promote the development of therapies.Read moreRead less