Left Ventricular Diastolic Dysfunction

Studying the causal roles of components of the renin-angiotensin-aldosterone system (including angiotensin-(1-7) (Ang-(1-7)), angiotensin-converting enzyme 2 (ACE2), Ang II, and ACE), uric acid, and klotho in pediatric hypertension and related target organ injury, including in the heart, kidneys, vasculature, and brain. Recruiting children with a new hypertension diagnosis over a 2-year period from the Hypertension and Pediatric Nephrology Clinics affiliated with Brenner Children's Hospital at Atrium Health Wake Forest Baptist and Atrium Health Levine Children's Hospital. Healthy control participants will be recruited from local general primary care practices. Collecting blood and urine samples to analyze components of the renin-angiotensin-aldosterone system (Ang-(1-7), ACE2, Ang II, ACE), uric acid, and klotho, and measuring blood pressure, heart structure and function, autonomic function, vascular function, and kidney function at baseline, year 1, and year 2. Objectives are to investigate phenotypic and treatment response variability and to causally infer if Ang-(1-7), ACE2, Ang II, ACE, uric acid, and klotho contribute to target organ injury due to hypertension.

Cirrhosis and portal hypertension are associated with a hyperdynamic circulation and decompensation events, including development of ascites, variceal bleeding, acute kidney injury, and susceptibility to infections. Rationale: Cirrhosis and portal hypertension are associated with a hyperdynamic circulation and decompensation events, including ascites, variceal bleeding, acute kidney injury, and susceptibility to infections. CCM, present in 30-70% of patients, is characterized by structural and functional abnormalities in the heart, and is associated with progression of cirrhosis, impaired quality of life and poor survival. Statins play a crucial role in reducing proatherogenic LDL cholesterol levels, making them a cornerstone in managing diabetes and cardiovascular diseases (CVDs) with the aim of decreasing or reversing atherosclerosis. This trial aims to evaluate the impact and safety of simvastatin in cirrhotic cardiomyopathy. Novelty: Simvastatin might be of special value in diastolic dysfunction through its hemodynamic and functional effects on LV remodeling and improve portal hemodynamics through the pleotropic effects of lipophilic statins. Objectives: The primary objective is to assess the combined effects of carvedilol and simvastatin in managing CCM vs carvedilol alone for a composite outcome to prevent decompensation and reduce all-cause mortality. We will comprehensively evaluate cardiac function, decompensation events and survival based on impact of simvastatin over the standard betablocker carvedilol. Methods: This is a double-blinded randomized placebo-controlled trial involving patients diagnosed with CCM. Clinical data, including cardiac imaging, cardiac biomarkers, and survival outcomes, will be assessed for either group. Expected Outcome: The investigators anticipate that the synergistic use of simvastatin and carvedilol will effectively reduce portal pressure, improve portal haemodynamic, and enhance cardiac remodelling. Successful reversal of LVDD can potentially prevent clinical events such as ascites, encephalopathy, and acute kidney injury (AKI).