31.   Dowling said Wednesday the artificial heart may be implanted in a second patient within the next month at one of the other four U.S. hospitals designated for the surgery.

32.   Even artificial heart pioneer Robert Jarvik has abandoned the idea of a totally implantable heart substitute in favor of tiny pumps that merely assist failing natural hearts.

33.   Even more than the push for miniaturization, artificial hearts are undergoing a transformation to become perfected, implantable devices.

34.   For a person without health insurance, appointments with a physician who could guide these treatments could be as rare as an artificial heart implant.

35.   For those with artificial heart valves, the infection can be fatal unless promptly and thoroughly treated with antibiotics.

36.   Frazier has also implanted one of five AbioCor artificial hearts now in use, in a man who is recovering at the Texas Heart Institute in Houston.

37.   Gray said the ethics of conducting an experiment with an artificial heart was an overriding concern in his research.

38.   He is planning to visit Abiomed Inc. in Danvers, makers of AbioCor, the first fully implantable artificial heart.

39.   He is now having an artificial heart pump replaced and is to be released from the hospital this weekend.

40.   His findings have also been used in the design of artificial heart valves, his colleagues said.