Active clinical trials for "Hypertrophy"

To map the genetic defect responsible for familial hypertrophic cardiomyopathy.

To study mechanisms of excess coronary ischemia secondary to alterations in autoregulation and arteriolar vasoreactivity in Black Americans with hypertension, varying degree of left ventricular hypertrophy, and angiographically normal or mildly diseased coronary arteries.

The purpose of this study is to determine, among a large cohort of 300 consecutive patients with hypertrophic cardiomyopathy, if extended ambulatory monitoring using the iRhythm Technologies, Inc. Zio XT device results in identifying a greater burden of nonsustained ventricular tachyarrhythmia (nsVT) compared to current ACCF/AHA guideline recommended 48-hour monitoring.

The purpose of the study is to investigate the potential correlations of global longitudinal strain and peak left atrial strain, measured by speckle tracking echocardiography with the severity of hypertrophic cardiomyopathy and the risk for arrhythmias. Specifically the investigational questions are: Is there a correlation between myocardial deformation parameters of the left heart chambers with other important ultrasound parameters (eg maximal wall thickness, presence of subaortic obstruction, etc.) in patients with hypertrophic cardiomyopathy? Is there a correlation between myocardial deformation parameters of the left heart chambers and the symptomatology or functional capacity of patients with hypertrophic cardiomyopathy? Is there a correlation between the myocardial deformation parameters of the left heart chambers and the exercise capacity, as evidenced by the cardiopulmonary exercise test, in patients with hypertrophic cardiomyopathy? Is there a correlation between myocardial deformation parameters of the left heart chambers with the risk of ventricular or supraventricular arrhythmias in patients with hypertrophic cardiomyopathy? Is there a correlation between myocardial deformation parameters of the left heart chambers and risk factors for sudden death?

before major hepatectomy, in case of insufisant future liver remanent volume or function, portal embolization is a routinely used method to enable growth of the future liver remnant. Recently liver venous deprivation has been described in some pioneer centre. The results are processing with greater and faster hypertrophy allowing probably less drop out from the embolization to surgery compared to portal embolization. In major hepatectomy, and specially in right or extended right hepatectomy the segment IV plays an important role in the proportion of future liver remnant. Despite the growing interest in the scientific community for liver venous deprivation many aspects concerning the liver hypertrophy remains unexplored. In particular the the degree of hypertrophy of segment IV after liver venous deprivation compared to portal embolization.

Spirometric assessment of respiratory function before and after adenotonsillectomy surgery

About 60% of patients with hypertrophic cardiomyopathy have microvascular dysfunction. Microvascular dysfunction is directly related to prognosis in hypertrophic cardiomyopathy. This new measurement method is microcirculation resistance (MR) based on quantitative flow ratio (QFR), which does not need a pressure guide wire on the basis of angiography. The QFR system is used to evaluate the blood vessels distal pressure and blood flow, and their ratio is microcirculation resistance (MR). The quantitative blood flow fraction measurement system was analyzed by interventional laboratory platform image analysis software (AngioPlus 2.0). This study is a single-center retrospective cohort study. Participants were selected from patients who were diagnosed with hypertrophic obstructive cardiomyopathy in Fuwai Hospital from January 2020 to November 2021. The risk factor is whether there is microcirculation resistance disorder. The outcome was the major adverse cardiovascular events related to HCM (including all-cause death, heart transplantation, left ventricular pacemaker, and heart failure readmission) that were followed up one year after angiography. Aim To further clarify whether there is a certain correlation between microvascular resistance and adverse cardiovascular prognosis.

Hypertrophic cardiomyopathy (HCM) is associated with sudden cardiac death and an increased risk of atrial fibrillation and subsequent embolic event. An insertable cardiac monitor will provide data on cardiac rhythm over a period of 18 months. This will provide an extended monitoring far longer than 24-48 hours of Holter monitoring as is currently usual care. Therefore, detection of arrhythmias could be used in risk stratification and decision-making with regard to offer an implantable defibrillator and anticoagulants.

The aim of this prospective study is to evaluate presence and quantity of nano-sized particles and interindividual differences in their distribution and elemental composition in human nasal mucosa obtained by mucotomy in patients diagnosed with chronic hypertrophic rhinosinusitis and to compare the obtained results with control specimen obtained from stillborn children.

The purpose of this study is to determine the prevalence of Fabry mutations in patients with left ventricular hypertrophy (moderate to severe), as measured by echocardiography.This study is a screening study