Abnormal Heart Rhythms

ghdhair100 · Wysłany: Pon 5:41, 28 Mar 2011

Abnormal Heart Rhythms (arrhythmias)
Abnormal heart rhythms (arrhythmias) are sequences of heartbeats namely are irregular. They are too fast, too slow, alternatively behaved via one irregular electrical pathway through the heart. Heart rhythms different from an human to the additional. Health, old and fitness are often opener elements.
The heart is a muscular apparatus with 4 chambers, devised to work efficiently, reliably, and continuously over a lifetime. The sturdy walls of each compartment compact in a regulated sequence, pumping blood as required by the body while expending as little vigor as possible during each heartbeat.
Contraction of the brawn fibers among the heart is controlled along electricity. This streams via the heart in a accurate style, according another pathways and by a controlled speed. The electrical new that begins each heartbeat, originates in the heart's pacemaker, situated in the top of the upper right heart chamber (right atrium). The rate at which the pacemaker discharges the electrical current determines the heart rate. This rate is inspired along nerve thrusts and levels of definite hormones within the bloodstream.
The heart rate is regulated automatically by the autonomic nervous system, which consists of the sympathetic and parasympathetic divisions. The sympathetic department additions the heart rate through a web of nerves cried the sympathetic plexus. The parasympathetic division decreases the heart rate through a single nerve, the vagus nerve.
In an adult at rest, the heart rate is normally among sixty and one hundred hammers per minute. However, lower rates may be natural in youth adults,[link widoczny dla zalogowanych], particularly those who are physically eligible. A person's heart rate varies normally in rejoinder to discipline and such stimuli as ache and inflame. Heart tempo is considered abnormal merely when the heart rate is inappropriately quickly (known as tachycardia) or slow (known as bradycardia), or is random, or when electrical impulses voyage along abnormal pathways.
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