Übersetzung und Analyse von Wörtern durch künstliche Intelligenz
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pacemaking$57120$ - Übersetzung nach italienisch
![Illustration depicting an [[ectopic focus]].](https://commons.wikimedia.org/wiki/Special:FilePath/Ectopic focus.svg?width=200 "Illustration depicting an [[ectopic focus]].")
Wikipedia
The contraction of cardiac muscle (heart muscle) in all animals is initiated by electrical impulses known as action potentials that in the heart are known as cardiac action potentials. The rate at which these impulses fire controls the rate of cardiac contraction, that is, the heart rate. The cells that create these rhythmic impulses, setting the pace for blood pumping, are called pacemaker cells, and they directly control the heart rate. They make up the cardiac pacemaker, that is, the natural pacemaker of the heart. In most humans, the highest concentration of pacemaker cells is in the sinoatrial (SA) node, the natural and primary pacemaker, and the resultant rhythm is a sinus rhythm.
Sometimes a secondary pacemaker sets the pace, if the SA node is damaged or if the electrical conduction system of the heart has problems. Cardiac arrhythmias can cause heart block, in which the contractions lose any useful rhythm. In humans, and sometimes in other animals, a mechanical device called an artificial pacemaker (or simply "pacemaker") may be used after damage to the body's intrinsic conduction system to produce these impulses synthetically.
