300,000+ clinical trials. Find the right one.

52 active trials for Heart Failure With Preserved Ejection Fraction

Cardiac Amyloidosis in HFpEF

Heart failure with preserved ejection fraction (HFpEF) accounts for half of heart failure cases with heterogenous cause and variable presentations. The diagnosis of HFpEF required clinical signs and symptoms of HF, normal left ventricular ejection fraction (LVEF) and evidence of diastolic dysfunction. No treatment has been shown in recent major clinical trials having benefits in these patients. One major reason of the poor response to medical treatment is the heterogeneity of HFpEF, which contains many different underline causes. To identify the underlying causes of HFpEF may improve the diagnosis and treatment in these patients. Age-related amyloid deposition has first been reported in 1876 and the following autopsy studies showed the prevalence of senile cardiac amyloid is up to 25%. Recently, it has been recognized that the deposits in senile cardiac amyloid are derived from wild-type transthyretin (TTR). Transthyretin amyloidosis cardiac amyloidosis (ATTR CA) is caused by myocardial deposition of misfolded transthyretin protein. There are 2 types of ATTR classified by genetic mutation including wild-type ATTR (ATTRwt) and familial cardiac amyloid caused by TTR mutation (ATTRm). Multimodality techniques have been developed to assist in the diagnosis of the diagnosis of TTR. Among them, 99mTc-3,3-diphosphono-1,2-propanodicarboxylic acid (99mTc-DPD) scintigraphy is a non-invasive test and it can diagnose TTR from other cause diverse form of cardiac amyloidosis and cardiomyopathy. In the study of Gonzalez-Lopez et al, in 120 HFpEF patients, 16 (13.3%) had positive 99mTc-DPD scan. Four patients with positive 99mTc-DPD scan received endomyocardial biopsy and confirmed cardiac amyloid deposition. ATTRwt could be an important cause of HFpEF and it was often under diagnosed. A recent study in Spain reported that 13% of patents over age of 60 years with HFpEF and left ventricular wall thickness of 12mm or more had ATTRwt. However, the prevalence of ATTRwt among patients with HFpEF is not well-established in Taiwan and Asia. The aim of this study is to determine the prevalence, clinical characteristics, risk factors and outcomes of ATTRwt related HFpEF patients in Taiwan.

Start: August 2019
Heart Failure in Norway: Clinical Characteristics, Mortality and Health Care Resource Use

The prevalence of Heart failure above 70 years of age is 10% and 5 year mortality rate above 60%, higher than for cancer. The readmission rate first after hospitalisation is 44% despite the availability of life prolonging and life quality enhancing treatment. There is a lack of resources for adequate diagnostic workup necessary for implementing evidence-based treatment. This projects aims at assessing the impact of guidelines based diagnostic workup and guidelines based treatment of heart failure on mortality and readmission rates. As the symptoms defining the degree of heart failure and the discharge medication only is available in the electronic patient files, artificial intelligence is used to retrieve this information to assess if treatment is according to guidelines. The project is using first a rule based text processing approach using IBM Watson, then advancing to a machine learning approach using readmission and mortality as endpoints. The project has access to digitally stored echocardiographic measurements as well as digital ECG's and lab data on 15 000 patients admitted with a diagnosis of Heart failure. If the retrieval of symptoms and function by artificial intelligence is successful, the next step is to assess if those benefitting the most from echocardiography can be identified using information from the ECG's, lab data or symptoms and functional capacity as described in the Electronic Health Records.

Start: January 2020