View clinical trials related to Hypertrophy.
Filter by:More than 1 million people worldwide wear soft contact lenses for refractive error correction. However, severe sight threatening complications due to contact lens wear such as contact lens-related microbial keratitis (CLMK) are about 1 per 2500 persons per year. The rate of infection increases drastically to 1 per 500 person per year if lenses were worn overnight. Recently, color tinted cosmetic soft contact lenses, which are essentially soft contact lenses with a color tinted annular ring, are gaining increasing popularity especially among the younger and Asian population desiring a change in iris color or the doll-eyed look. However, studies on the effect of these lenses on the ocular surface have been scarce. Recently, a report of 12 cases of lens-related microbial keratitis due to wear of the color tinted lenses have been reported. Others reported of decreased contrast sensitivity, increased higher order aberrations, and temporary changes in corneal topography due to color tinted lens wear. Nevertheless, comprehensive and prospective study has not yet been done. Thus, the purpose of this study is to conduct a prospective observational study to determine the influence of color tinted cosmetic contact lens wear both on visual performance and ocular surface alterations.
Systemic RV hypertrophy and impaired systolic function occur after atrial switch (AS) in d-transposition of the great arteries (d-TGA). Echocardiography has limitation in the assessment of the right ventricle (RV). In this study the investigators sought to evaluate systemic RV myocardial mass and function after AS for d-TGA and to analyze the role of excessive hypertrophy for ventricular function under special consideration of the interventricular septal (IVS) movement.
Individuals with kidney disease are at a higher risk for heart and vascular diseases, including heart attacks and strokes, than those with normal kidney function. The purpose of this research study is to collect information on the causes, complications and treatment of kidney disease. Patient characteristics, comorbid diseases and laboratory markers used in routine practice, as well as novel biochemical markers and genetic data will be collected to examine relationships between biochemical and genetic markers and cardiovascular risk. Information on the health history of incident hemodialysis and peritoneal dialysis patients will be captured using structured patient interviews and review of medical records. Blood and urine specimens will be collected at the time of dialysis initiation and stored in order to perform novel biochemical and genetic assays in the future. The overall goal of the CKDCS/LUCID study is improve understanding of cardiac-associated risks and to improve treatment in patients with kidney disease. A cardiac imaging substudy will be performed in a subset of patients enrolled. The goals of the substudy are to examine whether the risks of developing common cardiac-related complications (coronary artery calcification [CAC] and left ventricular hypertrophy [LVH]) are associated with certain medications taken by individuals on dialysis and whether these risks are modified by a genotypic predisposition.
The study hypothesis: Valsartan as an angiotensin II receptor blocker treatment has beneficial effects on both midwall mechanics and myocardial functions in hypertensive patients with Left ventricular hypertrophy.
This study is designed to assess the effect of a diet-controlled nutrition program utilizing an egg-based higher protein diet on muscle composition and size, and indices of metabolic health and markers of systemic inflammation in older men and women who are slightly overweight.
Pain after tonsillectomy can be severe and last ten days. Various new surgical instruments have been developed over the years in an attempt to reduce postoperative pain with mixed results and increased costs; no single tonsillectomy technique is superior to the rest. Patients are discharged to home usually on the day of surgery and often suffer significant pain and nausea. Pain medication is often prescribed which can cause nausea, vomiting and constipation. Children in pain are reluctant to take in fluids and may require intravenous hydration at an emergency department. "Battlefield acupuncture " has been recently developed by the US Air Force and is now being used in Iraq and Afghanistan on wounded warriors suffering severe acute pain from trauma. This protocol consists of five acupuncture points on the outer ear. A recent study has demonstrated decreased pain and agitation in children undergoing ear tube insertion. Ear tube patients have mild discomfort compared to tonsillectomy patients and are able to attend school the next day. The investigators have been encouraged by the benefits of acupuncture during surgery for ear tube patients and also wounded warriors recovering from their injuries. These findings motivated us to see if acupuncture during tonsillectomy surgery would result in less pain and nausea.
Sclerostin, the product of the SOST gene, located on chromosome 17, locus q11.2 in humans, was originally believed to be a non-classical Bone morphogenetic protein (BMP) antagonist.Sclerostin was recently identified as a component of parathyroid hormone (PTH) signal transduction. Chronic kidney disease (CKD) is associated with abnormalities in bone and mineral metabolism.New advances in the pathogenesis of renal osteodystrophy (ROD) change the perspective from which many of its features and treatment are viewed. Calcium, phosphate, parathyroid hormone (PTH), and vitamin D have been shown to be important determinants of survival associated with kidney diseases. Now ROD dependent and independent of these factors is linked to survival more than just skeletal frailty.Furthermore, ROD is shown to be an underappreciated factor in the level of the serum phosphorus in CKD. The discovery and the elucidation of the mechanism of hyperphosphatemia as a cardiovascular risk in CKD change the view of ROD. Emerging current data suggests a promising role for serum measurements of sclerostin in addition to iPTH in the diagnosis of high bone turnover in chronic kidney disease-5D patients (dialysis patients). Because of the close relationship between ROD and cardiovascular disease, the aim of this study is to investigate the association between sclerostin, arteriovenous fistula thrombosis, echocardiography and carpal tunnel syndrome in maintenance hemodialysis patients.
This project seeks to reduce the disparity in hypertensive heart disease which exists for African-Americans who have poorly controlled hypertension (HTN), also known as blood pressure (BP). The investigators are targeting a highly vulnerable, often neglected subject population which stands to benefit tremendously from better BP control and a corresponding decrease in heart damage. HTN occurs early in life and more often in African-Americans, reducing both quality and quantity of life. Inner-city African-Americans with HTN utilize the emergency department (ED) for chronic BP management. Like cardiovascular disease, vitamin D deficiency disproportionately affects African-Americans. Vitamin D is thought to play an important role in cardiovascular health. Vitamin D replacement in those who are deficient has been thought to reduce the cardiovascular disease, especially if initiated early before irreversible damage has occurred, but this has yet to be tested in a prospective clinical trial. Accordingly, this proposal was designed to investigate the relationship between vitamin D and cardiac damage (as identified on cardiac magnetic resonance imaging) in a cohort of African-American, vitamin D deficient hypertensive patients without prior history of heart disease. The primary objective of this proposal is to evaluate the efficacy of vitamin D therapy in vitamin D deficient African-Americans with HTN. Vitamin D is an inexpensive treatment, which, if shown to be effective could improve the existing approach to a widely accessible, cost-effective option.
Heart failure with preserved ejection fraction (HFpEF) accounts for over 50% of heart failure cases in the United States, affecting a primarily elderly population. No treatment has been shown to affect mortality in HFpEF, which is more than 50% at five years a hospitalization. This project explores the underlying cardiovascular physiology of patients with HFpEF with the goal of identifying new therapeutic targets that would allow improved treatment of this devastating disease.
The aim of this study is to evaluate whether a smaller dose of caffeine sodium benzoate 10 mg/kg IV is as effective as 20 mg/kg IV in decreasing the number of children who develop post extubation adverse upper airway respiratory events compared to placebo.