Word: pumps
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...long, slender pair of pliers, Bailey dipped his needle lightly in and out of the wall of the right auricle, drawing only a few drops of blood as he made two circular (purse-string) sutures. "Suction." An assistant dipped a glass-tipped rubber tube, attached to a vacuum pump, into the heart bed, drew out the spilled blood. With fine team coordination, Bailey made a small cut in the auricle wall; one assistant slid a plastic tube through it into the lower great vein, and another drew the purse string tight to check bleeding. Another cut, another tube...
...body's temperature is lowered, its tissues need less blood, and the brain can survive without damage for twice the normal time. Bailey wondered whether by chilling the patient (hypothermia) he could reduce the body's blood requirement to a level where some sort of pump could handle it. Then the bold idea struck him: Why not try hypothermia alone if he needed only six or eight minutes inside the heart...
...used in cases where the surgeon can count on getting in and out of the heart in less than eight minutes. Moreover, under hypothermia the heart is especially likely to lose its regular beat and flutter uselessly (fibrillate), which may cause death. What was still needed was a pumping device to take over the functions of both heart and lungs for as long as necessary to operate. At Philadelphia's Jefferson Medical College, Surgeon John Heysham Gibbon Jr. had been working on such a device for almost 20 years. Bailey himself was experimenting with pumps when...
Stopping the Beat. There is sharp disagreement as to how much blood a patient should get from the heart-lung machine during an operation. One school favors giving as much blood as the heart normally pumps at rest (about four quarts a minute in a 150-lb. man). Say their critics: any pump run at such high speed may damage the blood cells. Another major disagreement involves stopping the heartbeat. With its major vessels shut down and their blood bypassed to the machine, the heart goes somewhat limp, but keeps on beating because it continues to receive some blood through...
...dirty teeth, yellow bottoms, and thirteen stripes of a width-wise sort. They dig holes that trip cattle and eat grain, which aggravates farmers. They also incurred the enmity of Senator Richard L. Neuberger of Oregon, as if they didn't have enough trouble with nasty little men who pump bisulphide of carbon into their burrows. But at least these men make no pretensions about their aims, while Senator Neuberger has a sneaky, insidious scheme for annihilation...