Atiral fibrilation overviewThe heart rate in normal parameters is between 60 and 100 beats a minute. When a heart is in atrial fibrilation, the rate is over 140 beats a minute, because this is a condtion is responsible of an abnormal and fast rate. When the heart beats normally, the walls contract and relax in a ordinate way for every single heart beat.
There are three types of atrial fibrilation: paroxysmal atrial fibrillation, . persistent atrial fibrillation, longstanding persistent atrial fibrillation.. Paroxysmal atrial fibrillation trial premature beats is not constant it may appear and disappear and it stops without treatment in 48 hours. . This is more common in young patients and that present in a Holter monitoring atrial premature beats. Paroxysmal atrial fibrilation can in time become a permanent one.
Persistent atrial fibrillation last around 7 days or less if it is treated properly. It can be the result of many episodes of many episodes of paroxysmal atrial fibrillation. When persistent AF is combined with rapid ventricular heart rate response it can cause ardiomyopathy that will need electrical remodeling. The last type, the longstanding persistent atrial fibrillation lasts for a long period, about a year. In this case the treatment has to deal with rate control. Even though is very difficult it is possible to stop the evolution from aroxysmal to persistent and to permanent.
For young patients with no heart conditions, with normal echocardiography results and no structural heart disease but who suffer from paroxysmal, persistent, or permanent AF, the term used is lone atrial fibrillation.
It is hard to tell the exact cause of atrial fibrilation but it is more frequent with age and it affects drinkers. Among the causes are present: high blood pressure, heart valve disease, inflammation of the lining around the heart called pericarditis; atherosclerosis.
Atiral fibrilation comes along with other medical problems like: pneumonia, diabetes, diabetes, carbon monoxide poisoning..
It may also be caused by : obesity, drinking in excess, drinking caffeine in excess, smoking, taking drugs (especially cocaine or amphetamines ).
Homodynamic stress, atrial inflammation, catecholamine excess, neurohumoral cascade activation and other cardiovascular risk factors are prone to cause atiral fibrilation .
It is thought tha atrial fibrilation needs an action to start the condition and permissive atrial substrate. Also a cause may be multiple wavelet when the wave fronts are fractioned that triggers the appearance of new so called “daughter wavelet”
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