View clinical trials related to Hypertrophy.
Filter by:Hypertrophic cardiomyopathy (HCM) is one of the most common inherited cardiac diseases, with a prevalence of ∼0.2%. Sudden cardiac death (SCD), heart failure and stroke are the major poor outcomes of HCM. Although about half of the patients were found to be caused by mutations mainly located in genes encoding sarcomere proteins, the causes in a significant proportion of patients with HCM are still unknown. Even in the patients with sarcomere mutations, the molecular pathways that eventually lead to cardiac hypertrophy are remained to be revealed. Furthermore, HCM presents with significant heterogeneity. SCD risk stratification and prevention by ICD are necessary. However, the strategy of SCD risk stratification recommended by the 2011 ACCF/AHA and 2014 ESC guidelines were based mainly on the evidence derived from American and European countries. The accuracy of these guidelines in Chines patients with HCM was not evaluated yet.
The investigators sought to evaluate the morphological and functional changes and prognosis of participants with unexplainable precordial deep T-wave inversion on ECG and with apical thickness less than 15mm. The conduction of this study was largely due to the increased clinical requirement, which reflected the increased awareness among physicians of missed AHCM.
Hypertension and aortic stenosis are the two leading conditions that cause thickening of the heart muscles (left ventricular hypertrophy). Left ventricular hypertrophy is initially adaptive to maintain optimal heart function. Ultimately, heart failure occurs as a result of progressive muscle cell death and scarring (myocardial fibrosis). Dedicated techniques using cardiovascular magnetic resonance imaging (MRI) and novel high-sensitivity cardiac troponin blood assays are potential markers to detect myocardial fibrosis. Although hypertension-related heart disease is very common in Singapore, the significance of myocardial fibrosis is not well understood. In this study, the significance of myocardial fibrosis in 2000 patients with hypertension would be investigated. This will be the largest study using state-of-the-art MRI to examine the importance of myocardial fibrosis in hypertensive heart disease. 1000 participants, with at least 1 year follow-up, will be invited for a repeat assessment.
The prevalence of congestive heart failure (CHF) in Canada is high, representing one of the health care system's most expensive diagnoses. Despite major advances in medicine, the mortality and morbidity from CHF remains great. Currently, magnetic resonance imaging (MRI) is used for non-invasive imaging of the cardiovascular system to enable the structure and anatomy of the organ to be visualized. However, current MRI methods have limitations when assessing and aiding in the management of CHF. A new imaging method has recently been developed that is showing great promise as a tool in the management of patients with CHF. Rapid imaging of biochemical reactions within myocytes using MRI has recently become possible through the use of the Dynamic Nuclear Polarization (DNP) and dissolution method. DNP-dissolution results in an intravenous contrast agent that is "hyperpolarized", producing a magnetic signal that is enhanced by up to 100,000 fold. The particular agent is carbon-13 labelled pyruvate. In this study, we demonstrate the first 13C-metabolic images of the human heart, along with the required hardware and data acquisition methods.
The purpose of this project is to evaluate the safety, efficacy, and feasibility of performing prostatic artery embolization (PAE) using endovascular techniques and particle embolics in men suffering from lower urinary tract symptoms (LUTS) due to benign prostatic hyperplasia (BPH).
The role of cAMP signaling mediated by beta2-adrenergic stimulation with agonists has been well-studied in skeletal muscles of animals. Studies in humans are scant and the scope of the present study is thus to investigate the role of cAMP signaling by beta2-adrenergic stimulation for muscle adaptations in humans.
Hypertrophic cardiomyopathy (HCM) is an autosomal dominant disease characterized by unexplained hypertrophy of the left ventricle, often with predominant involvement of the interventricular septum, and characterized by myocyte disarray and fibrosis. HCM is the most common familial heart disease with strong genetic heterogeneity, demonstrated over the past 20 years. Mutations in 11 or more genes encoding proteins of the cardiac sarcomere are responsible for (or associated with) HCM. However, 30-40% of sporadic and familial cases of HCM are still genetically unlabelled. In addition, secondary HCM caused by Fabry's disease or amyloidosis, may mimic primary HCM and may be under diagnosed. This may result in a delay in accurate diagnosis and instauration of specific treatment, with possible clinical consequences for the patients. For these reasons, we decided to apply a new diagnostic strategy for patients with newly diagnosed HCM, including the whole exome sequencing (WES) technology. If correctly applied, this new technology has the potential to strongly reduce the diagnostic wavering leading to earlier diagnosis and genetic counseling in sarcomeric HCM and rarer forms of secondary HCM including Fabry's disease and amyloidosis, and also specific therapy set-up in secondary forms of HCM. It should also allow identifying new genes responsible for HCM.
This is a prospective, open label, single-center study, in kidney transplant recipients with stable renal function for 12 and 120 months after transplantation, that are in use use of calcineurin inhibitors, azathioprine, and prednisone. The prevalence of left ventricular hypertrophy will be investigated before and after conversion of azathioprine to everolimus. This study will evaluate as primary objectives: the prevalence of left ventricular mass hypertrophy in renal transplant recipients with azathioprine therapy. And assess the ability of everolimus to reduce left ventricular mass after conversion from Azathioprine, using sensitive methods such as MRI. And as secondaries objectives: Renal function (measured GFR) at 3 and 6 and 12 months after conversion, number and severity of episodes of acute rejection proven by biopsy, and the proteinuria at 3, 6 and 12 months after conversion.
The purpose of this study is to determine whether the application of the extended myoectomy in patients with obstruction of the left ventricular output more efficient than standard myoectomy by Morrow.
The purpose of this study is to determine whether COX-2 inhibitor is effective in the treatment of primary hypertrophic osteoarthropathy