Artificial heart valve Artificial heart valve An artificial heart valve is a device implanted in the heart of a patient with valvular heart disease. When one of the four heart valves malfunctions, the medical choice may be to replace the natural valve with an artificial valve. This requires open-heart surgery. Valves are integral to the normal physiological functioning of the human heart. Natural heart valves are evolved to forms that perform the functional requirement of inducing unidirectional blood flow through the valve structure from one chamber of the heart to another. Natural heart valves become dysfunctional for a variety of pathological causes. Some
Corruption in Argentina international banks as Credit Suisse, First Boston Corporation, HSBC Bank Argentina, JP Morgan Securities, and Salomon Smith Barney. The charges pertained to the 2001 Megaswap negotiated between Economy Minister Domingo Cavallo and said banks. Cavallo attempted to avoid a bond default by offering bondholders a swap, whereby longer-term, higher-interest bonds would be exchanged for bonds coming due in 2010. The Megaswap was accepted by most bondholders (particularly banks, which used the Megaswap to shed rapidly depreciating bonds), and delayed up to US$30 billion in payments that would have been due by 2005; but it also added US$38 billion in interest