Word: bloodstreams
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...Corning Corp.) is 18 in. to 24 in. long, only 1/16-in. thick. It is led under the skin, behind the ear and down the neck to a point where it is spliced into the internal jugular vein. The excess brain fluid is thus dripped into the bloodstream, where the body readily disposes of it. Another Silastic preparation, which looks like a sheet of waxed paper, serves to correct a different type of brain problem: when part of the brain's parchmentlike covering, the dura mater, is damaged or destroyed, the brain tissues and fluids are kept from bulging...
...drawing any of the liquid with it. Robb's membrane works best in a tank or stream of running water, where bubbles of oxygen are plentiful to draw on. Then the artificial membrane can operate as a gill does when it filters oxygen into a fish's bloodstream. Indeed, trout breathe best in mountain streams where there is plenty of oxygen in the water...
Ever since thalidomide became a drug-industry scandal, medical researchers have made every effort to find ways and means of determining the effects of drugs on unborn children. But how to study a developing fetus in utero reacting to drugs passed through its mother's bloodstream? Last week such research was given a hopeful boost when the National Institute of Child Health and Human Development awarded a $48,500 contract to the Marquardt Corp., of Van Nuys, Calif., to probe the effects of drugs on embryonic opossums...
Since many ulcer and recurrent indigestion patients refuse to eat often enough, or do not get complete relief even when they do, doctors still prescribe antacids. But nowadays these are nearly all of the nonsystemic kind-unlike bicarb, they are never absorbed into the bloodstream and are far safer. The body processes them more slowly, so they do not give such quick relief. The most familiar, in the form of milk of magnesia, is magnesium hydroxide, and this is the main ingredient in many brand-name preparations. Since it has laxative properties, some manufacturers combine it with aluminum hydroxide, which...
...probably do no harm. But a teaspoonful of bicarb in half a glass of water is enough to neutralize highly acid stomach contents, with some bicarb left over. The leftover can be dangerous, particularly to a person with an unsuspected kidney ailment. The excess bicarb is absorbed into the bloodstream through the walls of the small bowel, causing excessive alkalinity in the blood. It is the kidneys' job to remove this excess, but diseased kidneys may not be up to it, introducing the danger of death from alkalosis...