All Direct Subsidized and Unsubsidized Loans disbursed between July 1, 2014 and June 30, 2015 carry a fixed interest rate of 4.66% for undergraduates. Graduate or professional students receiving a Direct Unsubsidized Loan disbursed between July 1, 2014 and June 30, 2015 will have a fixed interest rate of 6.21%.
There is a problem when the valve that controls what blood is good and what blood is used, no longer is strong enough to control this flow. Heart valves get damaged or simply wear out. I think you are asking what causes blood to flow in the wrong direction. My guess is that it would be a faulty heart valve.
What your results mean Clotting too slowly. Blood that clots too slowly can be caused by: Blood-thinning medications ; Liver problems; Inadequate levels of proteins that cause blood to clot; Vitamin K deficiency; Other substances in your blood that hinder the work of clotting factors; Clotting too fast. Blood that clots too quickly can be caused by: