Word: irregularly
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Hughes-Hallett recalls having to convince "several people in University Hall" in 1970 to let her hire undergraduates, and being told it would be "a highly irregular thing to do." "I may have been the first," she says. But over a decade the practice has spread to science and computer courses--especially Natural Sciences 110, "Automatic Computing," and Applied Math 110, "Introduction to Computer Programming...
Dana Wilson, 41, a lumber company manager in Mehama, Ore., had been taking drugs to control the occasional irregular beating of his heart following a massive heart attack. But the treatment proved unsuccessful; one day several months after the attack, his heart began to race, reaching 250 beats per minute before returning to normal. Doctors turned to an innovative method of studying arrhythmias. They threaded electrodes into his heart and electrically stimulated the tissue to induce the erratic beating. Trying different drugs, they learned that none would be helpful in treating Wilson's condition. But by moving the electrodes...
...drugs reduce both the rate at which the heart beats and the force of its contractions. Beta blockers were introduced in the U.S. in the 1970s and have caused much excitement. In addition to lowering blood pressure, they are used extensively to control angina and are commonly prescribed for irregular heart rhythms as well. They are now being studied to see if they can prevent death in people who have survived a heart attack. About 10% of survivors die in the year following an attack...
Diagnosing Arrhythmias. A large percentage of the heart disease deaths in the U.S. each year are due to arrhythmias, irreguLar heartbeats that occur when the organ's electrical impulses are disrupted. Normally, the millions of heart cells contract in specific sequence as an electric current flows from one part of the heart to another. Irregular rhythms are associated with coronary artery disease, faulty valves and heart muscle damage resulting from hypertension, heart attacks or excessive drinking. When the system shortcircuits, the heart develops abnormal rhythms, which can lead in extreme situations to fibrillation, a disorganized twitching of the heart...
...threat of arrhythmias is that the first episode can be fatal. In emergencies the heart can be electrically shocked to restore a healthy beat. But many people do not get help in time and are not resuscitated. One device that doctors now use to diagnose a patient's irregular rhythms is the 24-hour EKG recording. A person wears a tape recorder-size monitor that has electrodes leading from it to his chest as he pursues his normal daily routine. The machine automatically records his heart's rhythm over the day, during which time he keeps a diary...