Word: oxygenated
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Questioning his patient, Bayne finally deduced that a prescription drug she was taking had caused her heart to slow, decreasing the flow of oxygen to her brain and sending her into a faint. That settled, he administered a stimulant called atropine to strengthen her heartbeat. Total elapsed time from pew to recovery: eight minutes, just about as long as it would have taken to get her to the emergency room in an ambulance...
...treatment can save PREMATURE BABIES born with underdeveloped lungs. Doctors fill the tiny, collapsed air sacs with an oxygen-rich liquid that enables the lungs to expand. The liquid eventually evaporates...
...have at their disposal is a way of preventing the brain from hitting the panic button in the first place. Researchers are studying several compounds, including calcium-channel blockers, that can slow down the metabolism of nerve tissue. The lower rate could help the brain get by on less oxygen and fewer nutrients, thereby lengthening to as much as 12 hours the amount of time doctors have to re-establish normal blood flow...
Although gerontologists acknowledge the interplay of heredity and environment, they tend to fall into camps in explaining how aging works. Wear-and-tear theorists hold that living itself is fundamentally dangerous. The same breath that gives and sustains human life produces oxygen radicals, unstable compounds that when combined with just about anything, have toxic effects on cells. Add to that the weakening over time of the immune system, which leads the body's fight against disease, and decline is inevitable. Biologists are now experimenting on rats and rhesus monkeys to see if restricting the intake of calories (while maintaining healthy...
Toward that end, research is also under way to see if low doses of hormones or high doses of vitamins can reduce the effects of oxygen radicals. The nia is supporting limited research into the risks and benefits of boosting the levels of three hormones that decrease as people age: melatonin, which affects sleep cycles; dehydroepiandrosterone, a product of the adrenal glands that converts to estrogen and testosterone; and human-growth hormone, which affects bone and organ development, as well as metabolic rate. Limited lab tests on animals suggest to some investigators that melatonin may serve as an antioxidant, wiping...