Word: carotid
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...Irish-born Dr. Robert James Marshall explained it last week to the American Heart Association in Atlantic City, the steal involves one of the arteries that normally help to supply blood to the brain. Besides the well-publicized carotid arteries, there are two lesser-known vertebral arteries, each of which branches off from one of the subclavian arteries in the shoulders and ascends to the brain (see diagram). These arteries unite at the base of the brain to form the basilar artery, and in a healthy person they supply up to 20% of the brain's blood. Normally...
...some cases, said Dr. Marshall, a small steal produces no obvious ill effects; this has been dubbed "the subclavian snitch." But Dr. Marshall suggested that a truly massive steal, in which both carotid arteries are also robbed of blood, might well be called "the great brain robbery...
...High Blood Pressure. In the vast majority of cases, the cause of high blood pressure is unknown. The one thing certain is that the pressure can be influenced by the carotid nerves and the carotid nerve sinuses on each side of the neck. Two research teams have begun work almost simultaneously on electrical control of these "barorecep-tors" with "baropacers" to be implanted like heart pacemakers. At the A.M.A. convention in San Francisco, Dr. Aydin Bilgutay of the University of Minnesota showed a baropacer which picks up pulses of current from two electrodes implanted in the heart and uses those...
...DeBakey placed a stethoscope on the right side of Key's neck, heard a telltale sound. To confirm his suspicions, he had an opaque dye injected into Key's bloodstream and an X ray taken; the resulting picture showed constriction from a large atheroma in the right carotid arteries that supply Key's brain...
...operating room, Dr. DeBakey performed a surgical procedure that he pioneered and has improved over the past ten years. He installed a temporary plastic "shunt" so that blood supply to the brain would be maintained during the operation, removed large gobs of fatty material from the carotids, enlarged both the common and internal carotid arteries still further by suturing a Dacron patch in their walls. Then a week later he removed the atheromas that were causing the sharp pain in Key's legs...