A new frontier for TAVR: Aortic insufficiency in CF-LVAD patients

Full-root aortic valve replacement by stentless aortic xenograft is a viable option in patients with small aortic roots. We describe, a technique for the full-root implantation of stentless aortic xenografts, with emphasis on the management of the proximal suture line and coronary anastomoses, and discuss its limitations and alternative...

Insufficient sleep refers to not getting the recommended amount of sleep for optimal functioning, even if it's just slightly less than needed. Sleep insufficiency may occur due to lifestyle choices, such as staying up late for social events or work, resulting in routinely getting less sleep than required. For example, consistently sleeping 6 hours when the body needs 7-9 hours can lead to cumulative effects on health and well-being.
Sleep deprivation is a more severe form of sleep loss...

The goal of this protocol is to describe in detail the technique of minimally invasive aortic valve replacement through a right anterior mini-thoracotomy and central aortic cannulation. This technique can potentially enhance patients' comfort and, by reducing post-operative morbidity, promote lowering the length of stay and global...

Valve-sparing aortic root replacement has the advantage of preserving the patient's own aortic valve. The complexity of the reported techniques to date restricts their use to a limited number of cardiac surgeons. This protocol describes step-by-step a standardized technique reproducible by a greater number of cardiac...

The Production Possibility Frontier (PPF) illustrates the maximum combination of two goods or services an economy can produce given its available resources and level of technology. It serves as a visual representation of the trade-offs between different production options.
The PPF assumes that resources are fixed and fully employed and technology remains constant. Any point on the curve represents a combination of goods that fully utilizes available resources.
Points inside the curve indicate...

The Edgeworth Box illustrates all possible ways to allocate a fixed amount of labor and capital between two firms—one producing wheat and the other producing cotton. Each point within the box represents a specific allocation of these inputs between the two firms. Among these points, the contract curve highlights all Pareto-efficient allocations, where no reallocation of labor or capital can increase one firm’s output without reducing the other’s. This condition defines Pareto efficiency,...