Word: clotted
(lookup in dictionary)
(lookup stats)
Dates: during 1960-1969
Sort By: most recent first
(reverse)
...most common form of heart attack is an occlusion (shutdown) caused by a thrombosis (clot formation) in one of the coronary arteries, which supply blood to the heart's own muscular walls. Physicians have long known that the dangerous clots usually form where a coronary artery is narrowed by a scaly deposit, or "plaque," of chalky, fatty material. But for all its importance, a nagging question has remained unanswered: How does the fatal clot really form...
This week, in the American Journal of Pathology, two San Francisco doctors offer an unexpected reply: the clot forms as the result of a reaction between arterial blood and material from a diseased part of the artery's walls. Along with the scaly deposit, it makes a plug that blocks blood flow...
...happy accident occurred, said Dr. C. Thomas Flotte (pronounced Float), while he was treating a patient with a clot in one of the renal veins. Dr. Flotte took a presurgery blood sample, and the laboratory reported a cholesterol level of about 400 mg., or double the normal. During the operation, the patient received a pint of dextran, both to maintain his blood volume and to reduce clotting. Then he got a pint a day for two days. Dr. Flotte sent a fresh blood sample to the lab and got back a cholesterol reading...
...Newman and assistant surgeons cut out the clot-plugged section of aorta and replaced it with a Dacron graft. Now Gormley's feet and legs are no longer cold. His blood pressure is down to a healthy 130/80, and last week he was recuperating in Ogden, Utah, taking short walks to rebuild his strength. The man who should have been dead had made medical history. His is the first known case in which such generous collateral circulation compensated for a complete shutdown in the aorta...
...newer detection methods is echoencephalography, working on the same principle as sonar. When sound waves are bounced in and out of the head and converted into a light pattern, the neurologist can see whether the brain has been shoved to one side by blood or a clot. Injections of radiopaque dye also help X rays to show whether arteries have been displaced or damaged enough to deprive part of the brain of its blood supply. Even using these techniques, doctors do not always discover everything...