Active clinical trials for "Heart Valve Diseases"

The aim of our study was to evaluate the effect of different temperature regimens of cardiopulmonary bypass on systemic oxygen transport and cerebral oxygenation during surgical correction of acquired heart diseases.

This study examines the hemodynamic and hemolytic properties of two additional smaller size valves to the On-X line of valves already approved by FDA.

To compare the efficiency and safety between gene-oriented group and standard care group during 90 days of initial warfarin-treatment for requiring anticoagulation patients with valve replacement or atrial fibrillation with or without valvular heart disease。

The prevalence of OSA (Obstructive sleep apnea，OSA) is 2%-4% in general population and 16%-47% in surgical-heart failure patients. Our previous study found that OSA was associated with the increasing incidence of perioperative adverse events.The continuous positive airway pressure (CPAP), as the standard treatment for OSA, is extensively applied clinically. The previous study reported that postoperative AHI was reduced and SPO2 was increased by CPAP treatment. However, whether CPAP treatment can improve OSA postoperative and related adverse events or not in patients with rheumatic valvular heart diseases (RVHD) were not reported.The purpose of this study is to observe the effective of preoperative CPAP on postoperative sleep parameters and adverse events, such as AHI changes, duration of ICU stay and duration of mechanical ventilation.

This is a prospective, non-randomized, multi-center study designed to evaluate safety and effectiveness of the ATS 3f Enable Aortic Bioprosthesis in a patient population undergoing isolated aortic valve replacement with or without concomitant procedures. The Enable Aortic Valve is an equine pericardial stented bioprosthesis.

Patients with mechanical heart valve prosthesis or with irregular beat (atrial fibrillation) have a high risk of blood clot formation. Such clots can result in a stroke. The patients are treated with warfarin - a "blood thinner" - to prevent these complications. The treatment has to be monitored with a blood test called Prothrombin time (PT) every 1-4 weeks. The dose of warfarin has to be changed whenever the PT result is outside of the treatment range. If the result is too low there is an increased risk of blood clots. If, instead, the result is too high there is a risk of bleeding. One third of the patients have very stable PT results and hardly ever have to change the dose. The investigators hypothesis is that these patients can go less often, e.g. every 12 weeks, for the blood tests.

Hypothesis: Stentless bioprostheses will perform superior to stented bioprostheses in different hemodynamic and biomechanical parameters. The study will investigate turbulence, flow and aortic root movement in a stentless bioprosthesis and compare it to a stented bioprosthesis.

To evaluate the impact of prehabilitation on quality of recovery in heart valve surgery. To evaluate the effects of Mild to moderate valvular diseases with Newyork Heart Association (NYHA) grade I and II . Previous studies were designed to target on Coronary artery bypass graft surgery (CABGs) patients no specifically heart valve surgery patients was studied so this study cover this aspect as well so from the outcomes of this study we will determine the prehabilitation effects on valvular surgery patients.

The PROTEMBO C Trial is an international, multi-center, single arm, non-inferiority study of the safety and performance of using the ProtEmbo System for cerebral embolic protection in subjects with severe native aortic valve stenosis indicated for TAVR.

Background: Recent recommendations from the European Society of Cardiology (ESC) are multidisciplinary cardiac rehabilitation including therapeutic exercises for patients after heart valve surgery unless there is insufficient evidence to decide whether therapeutic exercise cardiac training should be provided for such patients. As well, resistance training is an extremely safe systemic physical activity, and it has no contraindications if well-oriented, in addition to being the fastest-growing physical activity in the world in several practitioner settings. Purpose: This study was conducted to investigate the effect of early resistance training on the fitness level (vo2 max) and (PR interval) of patients post-valve replacement surgery.