Active clinical trials for "Bicuspid Aortic Valve Disease"

The aortic valve bicuspidia (BVA) is a congenital condition corresponding to the presence of 2 sigmoids instead of 3. This is the most common cardiac congenital anomaly affecting 0.5 to 2% of the population The general rule. BVA may be associated with structural damage to the ascending aorta, which exposes BVA patients to a risk of developing ascending aortic aneurysm and acute aortic accidents. Recent data from the literature have revealed that the natural history of BVA is marked by a possible development towards significant valvulopathy and / or an ascending aortic aneurysm often requiring surgical treatment. However, the natural history of bicuspid disease remains poorly understood and the prognostic factors for progression to severe valvulopathy and / or aneurysmal dilatation of the ascending aorta remain to be determined.

The Chinese Bicuspid Aortic Valve (BAV) Ultrasound imaging cohort study is a Chinese BAV ultrasound imaging cohort study. At present, a retrospective study cohort involving more than 30 hospitals has been established. The prospective multi-center study of BAV is expected to include and follow up 200 outpatients and inpatients with BAV. The clinical, ultrasound imaging and treatment parameters of the patients are collected and the patients are followed up for 2 years. To analyze the prognostic characteristics of BAV patients and establish a Chinese BAV database. The primary endpoint was all-cause death, and the secondary endpoints were heart failure, angina, severe aortic stenosis, severe aortic insufficiency, ascending aortic diameter ≥50mm, and surgery (surgical and interventional). According to the different pathological types of aortic valve in different types of BAV, ultrasound imaging was used to evaluate the different forms of valvular leaflet lesions and prognosis. Finally, it provides a basis for the prognosis, treatment method, treatment timing and treatment plan selection of BAV patients, and lays a foundation for the mechanism study of BAV arterial lesions and the establishment of risk model for the prognosis of BAV patients.

The purpose of this registry is to gather information on patients with bicuspid aortic valve disease.

The objective of this study is to evaluate the procedural and clinical outcomes of patients with bicuspid aortic valve stenosis undergoing transcatheter aortic valve replacement.

The goal of this non-interventional, retrospective data analysis is to validate the circle method for patients with bicuspid aortic heart valves undergoing transcatheter aortic heart valve implantation (TAVI). The main aims are: to assess whether patients with bicuspid aortic valves that received a TAVI suffered from fewer complications if valve size was identical to the one determined using the circle method compared to a case where circle method derived valve size is different from the actually implanted valve to develop recommendations on how to size the valve using the circle method.

The goal of this observational study is to assess the changes of ascending aortic diameter in patients undergoing transcatheter aortic valve replacement. The main questions it aims to answer are: whether the ascending aortic diameter increases or remains stable after transcatheter aortic valve replacement, especially in patients with preoperative ascending aortic dilatation; the determinants of postoperative ascending aortic dilatation.

Clarification of indications for surgical correction in patients with borderline expansion of the ascending aorta

Patients with bicuspid aortic valve-related aortopathy are at increased risk of aortic dilatation, dissection and rupture. Currently, risk stratification is largely based on aortic diameter measurements, with those deemed high risk referred for aortic replacement surgery. This approach is imperfect, and potentially exposes many patients to unnecessary high-risk aortic surgery, or fails to identify those at risk of dissection or rupture with smaller diameters. In patients with abdominal aortic aneurysms, the investigators recently demonstrated that uptake of 18F-sodium fluoride predicts disease progression and clinical events independent of aneurysm diameter and standard clinical risk factors. Based on the investigators preliminary data, a study was proposed to look at 18F-sodium fluoride uptake in patients with bicuspid aortic valve-related aortopathy. The proposed study will shed light on the underlying pathological processes involved in aortic complications of this disease as well as potentially providing an important risk marker to predict disease progression and guide the need for major aortic surgery.

Bicuspid aortic valve (BAV) disease is the most frequent congenital cardiac malformation, occurring in 0.5-1.2% of the US population. In young adults, it is generally a benign abnormality; but in older adults it is associated with thoracic aortic aneurysm or dissection in 20-30% of those with BAV. BAV is strongly associated with early development of aortic valve calcification or incompetence in >50% of BAV patients, and accounts for ~40% of the >30,000 aortic valve replacements (AVR) performed in the US each year. Yet, we know little of the etiology, cellular events and modifiers of progression of BAV to calcific aortic valve disease and we still do not understand the genetic cause(s) of BAV despite evidence for its high heritability. The Specific Aims of this study are: To identify the genetic causes of bicuspid aortic valve disease and its associated thoracic aortic disease. To identify potential pathways to predict the clinical course of BAV disease and for treating human BAV disease. To achieve these aims, we have created the International Bicuspid Aortic Valve Consortium (BAVCon), a consortium of institutions with cohorts of BAV patients and the expertise to fulfill the performance of these aims.

The specific aims of this study are to: Establish baseline levels of circulating MMP-2 and -9 , TIMP-1and- 2 and TGFB levels in individuals with bicuspid aortic valve and ascending aortic or aortic sinus measurements >40mm. Assess the effect on MMP levels during treatment with losartan, an angiotensin II receptor blocking agent. In the setting of losartan therapy for one year, evaluate the response of MMP levels in these patients, and clinical outcomes including effects on aortic growth rate