Naming difficulties may be rank ordered along a continuum. Items are rank ordered in terms of their ability to be named, which is correlated with their frequency. This type of picture-naming test is also useful in the examination of children with learning disabilities and the evaluation of brain-injured adults.
The Jarvik-7 heart was developed by American scientist Robert Jarvik and his mentor, Willem Kolff. In 1982, Seattle dentist Dr. Barney Clark was the first person implanted with the Jarvik-7, the first artificial heart intended to last a lifetime.
Earlier this month, 40-year-old Matthew Green left hospital and headed back home to his family after having his heart replaced with an artificial device made of plastic â the first UK patient to be discharged after having both sides of his heart replaced.ach side of the heart has a pair of valves â one pair per lung â controlling the flow of blood. Artificial hearts can now completely, if temporarily, replace the ventricles and valves with a device made of plastic or other man-made materials, which does the job of pumping blood around.