Artificial heart newer versions, such as the Heartmate II, developed by The Texas Heart Institute of Houston, provide continuous flow. These pumps (which may be centrifugal or axial flow) are smaller and potentially more durable and last longer than the current generation of total heart replacement pumps. Another major advantage of a VAD is that the patient keeps the natural heart, which may still function for temporary back-up support if the mechanical pump were to stop. This may provide enough support to keep the patient alive until a solution to the problem is implemented. In August 2006, an artificial heart was implanted
Human rights in Argentina "Clarin" in 2009, Fernandez Meijide, who formed part of the 1984 truth commission, claimed that the "documented" number of Argentines killed or disappeared was closer to 9,000. The "Asemblea por los Derechos Humanos" (APDH or Permanent Assembly for Human Rights) estimated the number of disappeared as 12,261, which included "definitive disappearances" and PEN detainee survivors of the clandestine detention centres spread throughout Argentina. The total figure of official prisoners was 8,625 and of these PEN detainees 157 were killed after being released from detention. Between 1969 and 1979 left-wing guerrillas accounted for 3,249 kidnappings and murders. CONADEP also recorded 458