Ensayos clínicos

The purpose of this study is to provide expanded access of patisiran to patients with hereditary transthyretin-mediated amyloidosis (hATTR).

The objective of this trial is to evaluate the effectiveness of left atrial appendage exclusion (LAAE) for the prevention of ischemic stroke or systemic arterial embolism in subjects undergoing cardiac surgery who have risk factors for atrial fibrillation and ischemic stroke.

Carotid revascularization for primary prevention of stroke (CREST-2) is two independent multicenter, randomized controlled trials of carotid revascularization and intensive medical management versus medical management alone in patients with asymptomatic high-grade carotid stenosis. One trial will randomize patients in a 1:1 ratio to endarterectomy versus no endarterectomy and another will randomize patients in a 1:1 ratio to carotid stenting with embolic protection versus no stenting. Medical management will be uniform for all randomized treatment groups and will be centrally directed.

The purpose of this study is to evaluate the probable benefit and safety of the LIPOSORBER® LA-15 System for the treatment of adult and pediatric patients with nephrotic syndrome associated with primary focal segmental glomerulosclerosis, when the standard treatment options, including corticosteroid and/or calcineurin inhibitors treatments, have been unsuccessful or not well tolerated, and the patient has a GFR ≥ 45 ml/min/1.73m2, or the patient is post renal transplantation. Treatment for FSGS is considered unsuccessful if the patient is unresponsive to standard therapy (e.g., at least 8 weeks of corticosteroids) and fails to achieve complete or partial remission. A standard treatment is considered not well tolerated if the patient experiences severe side effects without providing an acceptable level of clinical benefit.

The purpose of this study is to evaluate the safety, performance, and initial clinical efficacy of the Rivet PVS therapy in patients with symptomatic pulmonary hypertension.

The purpose of this study is to assess termination of atrial fibrillation (AF) following delivery of cold treatment to the oblique sinus using an experimental cooling module.

The purpose of this study is to test whether metagenomic shotgun sequencing can identify pathogens causing cardiovascular infections such as infective endocarditis or myocarditis.

We are currently enrolling both healthy volunteers and people who have been diagnosed with heart failure to participate in our research study.  The purpose of this study is to better understand the relationship between exercise, breathing, blood flow and blood pressure.  This study includes two study visits if you are a healthy or heart failure volunteer.    All testing will be performed at our testing center at St. Mary’s Hospital located in Rochester, MN. 

On the first study visit, the research activities will be discussed and all questions will be answered. Once written consent is provided and the participant is enrolled, lung function and exercise capacity will be measured.

The second study visit includes two separate breathing muscle workouts (a light and moderate workload) each followed by 10 min of light to moderate cycling exercise. In addition, two breathing tests will also be performed. During this visit, blood is drawn during exercise.

If you are a patient at Mayo Clinic, who is currently enrolled or will be enrolling in a cardiac rehabilitation exercise program, you will have the option to complete four study visits.  Your first two study visits as described above will be completed at the beginning of cardiac rehabilitation and then we will ask you to return to complete those same two study visits following the completion of your cardiac rehabilitation program.

Remuneration and parking reimbursement are provided.

The purpose of this study is to evaluate different strategies of cardiovascular therapy with Carvedilol, aiming to reduce the incidence of left ventricular ejection fraction (LVEF) decline and heart failure (HF) in patients undergoing curative intent Trastuzumab for breast cancer.

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Congenital heart disease (CHD) is an abnormal formation that occurs during the development of a baby’s heart, heart valves and/or large vessels such as the aorta artery. CHD is the most common cause of major congenital defects accounting for almost 30% of all defects (Van der Linde D, JACC 2011). While the statistics vary among studies, the best birth prevalence estimate is 8 per 1000 live births (Bernier PL 2010). In the USA, CHD affects 1% of all births per year (Krasuki & Bashore 2016), with an estimated 40,000 babies born with any type of heart defect every year (Benjamin Emelia 2018).  Twenty-five percentof these are affected by a severe congenital heart defect (https://www.cdc.gov/ncbddd/heartdefects/data.html#References). Children with CHD who survive after the surgical procedures can develop heart failure and require a heart transplant at any time in their lives. Infants born with CHD need immediate medical attention and multiple follow-ups throughout their lives. Besides the social and economic impact of CHD on the individual and family lives, CHD treatment places a significant financial burden on the healthcare system. Simeone et al, (2014) reported that the cost of CHD hospitalization in the US was approximately $5.6 billion in 2019, accounting for 15.1% of the total cost for all pediatric hospitalizations in that year.

The important improvements in CHD diagnosis and surgical treatment in the last decades has led to an increased survival of newborns affected with heart defects. A large number of CHD can be diagnosed during pregnancy, and the patients can present a broad range of symptoms. Forms of CHD are usually classified based on their severity, from mild to severe. One of the mildest forms of CHD is atrial septal defect, which can be undetectable until adulthood (Hoffman & Kaplan, 2002) and VSD (Penny DJ, 2011). On the other hand, severe CHD that requires multiple palliative surgeries includes single ventricle defects, such as hypoplastic left heart syndrome (HLHS) and tricuspid atresia.

The survival of infants with CHD will depend on the severity of the defect and the time of diagnosis and treatment received. The one-year survival of newborns with severe or critical CHD (generally any type of surgery/procedures in their first year of life) is estimated to be 75%.

Stem cell therapy has emerged as a new paradigm of treatment in the field of CHD with promising results. Cardiac regeneration has been the focus of acquired, adult heart disease for many years. However, congenital heart disease with structural abnormalities may also be a good target for other research studies. In fact, the pediatric heart is naturally growing and may be amendable to regenerative strategies. Furthermore, the initial pre-clinical and clinical studies have demonstrated that the delivery of stem cells into the heart of patients with CHD is feasible and safe. Moreover, the cell therapy approach, along with the standard surgical palliation, seems to offer benefits over surgical treatment alone. Even though the number of cell therapy clinical trials for CHD has increased in the last decade, more long-term follow-up studies are needed in this population setting in order to define the role of stem cell therapy in the clinical practice. Therefore, confirming our ability to produce autologous cells (cells from the patient's own body) from patients with severe CHD is an important step towards the long-term goal of being able to discover innovative cell-based protocols.