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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 ...
"The pacemaker rate was variable from about 80 to 120 pulses per minute, and likewise the voltage variable from 1.5 to 120 volts". [59] In 1928, the apparatus was used to revive a stillborn infant at Crown Street Women's Hospital in Sydney, whose heart continued "to beat on its own accord", "at the end of 10 minutes" of stimulation. [60] [61]
The most common indication for transcutaneous pacing is an abnormally slow heart rate. By convention, a heart rate of fewer than 60 beats per minute in the adult patient is called bradycardia. [1] Not all instances of bradycardia require medical treatment. Normal heart rate varies substantially between individuals, and many athletes in ...
In a normal heart beat rhythm, the SA node usually suppresses the ectopic pacemaker activity due to the higher impulse rate of the SA node. However, in the instance of either a malfunctioning SA node or an ectopic focus bearing an intrinsic rate superior to SA node rate, ectopic pacemaker activity may take over the natural heart rhythm. [3]
Biological pacemakers are indicated for issues such as heart block, slow heart rate, and asynchronous heart ventricle contractions. [ 2 ] [ 3 ] The biological pacemaker is intended as an alternative to the artificial cardiac pacemaker that has been in human use since the late 1950s.
One day we'll be able to create virtual twins of each patient’s entire body, giving new meaning to "personalized health care." My 2-year-old daughter needed a pacemaker.
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