Word: constricts
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...same, medically speaking. Tension headaches, which are the easiest to treat, are triggered by clenched muscles in the head and neck. Migraines, which generate a throbbing pain that is sometimes preceded by an "aura" and can last 12 to 24 hours, are produced by blood vessels that alternately constrict and expand. Cluster headaches are even worse than migraines--if you can imagine such a thing--and scientists suspect that overactive blood vessels play a role in them too. One of the hallmarks of cluster headaches is that they strike in cycles. A victim, typically a man, may experience three...
...heat on. The risk of heart attack--a major cause of postoperative death--can be cut in half by warming a patient to normal temperatures during SURGERY. Body temperature tends to plummet during an operation, which can cause arteries to constrict and blood pressure to soar. The cost of warming up? Just $15 for a special no-chill blanket...
...ordinary headache, a migraine results when tightened blood vessels in the brain repeatedly expand, squeeze surrounding nerves and then constrict again, resulting in excruciating pain that often leaves sufferers unable to function for days at a time. Migraines are triggered by a variety of sources, from caffeine to changes in weather to menstrual periods--catalysts, doctors believe, that result in a flood of serotonin that causes blood vessels in the brain to contract. Some of the more than 23 million Americans who suffer from migraines can find relief in a new drug, sumatriptan succinate, which blocks serotonin and prevents vessels...
...WEEKS AGO, A PROSECUTOR IN MUNICH MANAGED, almost casually, to strike a global blow against freedom of expression. Though he is a person of such obscurity that most of the accounts I've read of this incident didn't even mention his name, he has been able to constrict the information flow for some 4 million people in 140 countries...
Office workers started flooding into the streets below, and Smith and her co-workers followed. As Smith and her mother Kathy Graham-Wilburn, who also works for the irs, got closer to the area of the blast, they felt their stomachs constrict. They made their way through the crowds, past the bodies, listening to the children crying in the streets and studying every bloody face carefully. She found neither Chase nor Colton...