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A pacemaker or pacesetter, sometimes informally called a rabbit, [1] is a runner who leads a middle-or long-distance running event for the first section to ensure a high speed and to avoid excessive tactical racing. Pacemakers are frequently employed by race organisers for world record attempts with specific instructions for lap times. Some ...
An artificial cardiac pacemaker (or artificial pacemaker, so as not to be confused with the natural cardiac pacemaker) or just pacemaker is an implanted medical device that generates electrical impulses delivered by electrodes to the chambers of the heart either the upper atria, or lower ventricles to cause the targeted chambers to contract and ...
A pacemaker, also known as an artificial cardiac pacemaker, is an implanted medical device that generates electrical pulses delivered by electrodes to one or more of the chambers of the heart. Each pulse causes the targeted chamber(s) to contract and pump blood, [3] thus regulating the function of the electrical conduction system of the heart.
The action potential passes along the cell membrane causing the cell to contract, therefore the activity of the sinoatrial node results in a resting heart rate of roughly 60–100 beats per minute. All cardiac muscle cells are electrically linked to one another, by intercalated discs which allow the action potential to pass from one cell to the ...
Individuals with a low heart rate prior to pacemaker implantation are more at risk of developing pacemaker syndrome. Normally the first chamber of the heart (atrium) contracts as the second chamber (ventricle) is relaxed, allowing the ventricle to fill before it contracts and pumps blood out of the heart.
Pacemakers, like the one Arnold Schwarzenegger recently had implanted, help regulate a patient's heartbeat. ... “The idea behind the pacemaker is to help stimulate the heart in a more regular ...
The Wanted vocalist, 36, revealed on Instagram on Saturday, Dec. 21, that he had a pacemaker fitted after announcing weeks earlier that recent tests had found "issues" with his heart.
Thomas Joseph Byers, Jr. (born May 12, 1955) is a former professional distance runner and current businessman. In 1981, when running as a designated pacemaker or 'rabbit' in the high-profile 1500 meters race at the Bislett Games in Oslo, he won against a field including Olympic champion and world record holder Steve Ovett, after the rest of the field refused to follow his early pacesetting.
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