Word: heartbeats
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Dates: during 1960-1969
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...doctors did not kill the animal first. To prepare the baboon, a robust 57-lb. male, they put it under an anesthetic, then replaced its entire blood supply with human blood of the same type as Mrs. Voogt's. Nearly five hours later, after the animal's heartbeat and circulation had stabilized, the baboon was ready for the hookup with Mrs. Voogt. The surgeons deftly led a tube from an artery in the woman's right arm, above the pulse point, to a vein in the baboon's groin. With a second tube, they linked...
...symposium had performed transplants, they had answered this question long ago in their own minds. But there remained some sticking points in medical ethics. How to determine the death of the donor? On three criteria there was general agreement: The patient must no longer have any natural heartbeat, or respiration, or reflexes. Beyond that, he must have a "flat" electroencephalogram-no "brain wave" activity-but for how long? After the closed sessions in Cape Town, all that Spokesman Cooley could say was: "We have reached some agreement as to the nature of brain death...
...weighs only 28 lbs. It can be wheeled into a factory or installed in an out-patient ward, plugged into any standard electrical socket, and can handle as many as 20 subjects an hour. To achieve this simplicity and speed, the machine records only five electrical stimuli per heartbeat, as against the standard machine's 13. These five are sufficient for basic screening. Since what is adjudged normal in an ECG varies with the subject's age, early models of the analyzer were set for use on only the age bracket of the volunteers being tested. Later models...
...nerve tracts running to and from the cerebellum and other parts of the brain. A bit lower and most vital is the brain stem, the "old brain," which man has shared with other creatures since the earliest stages of evolution. A passageway for nerve impulses, it monitors breathing, heartbeat, blood pressure, digestion and muscle reflexes, mediates emotions...
...helped brain-injured patients to train the less dominant side of the brain to take over. Such cases are rare, and for Robert Kennedy, the damage had been too extensive even for survival. Twelve hours after the operation, the recordable brain waves ceased. For seven more hours, his heartbeat and breathing continued. Then these last two life signs faltered and stopped...