Premature Atrial Tachycardia
The most common form of supra ventricular fibrillation is atrial tachycardia. Atrial tachycardia consists of accelerated heartbeat coming from the atria (the heart has four chambers: two atria and two ventricles). It can be deduced from the name of the condition (supraventricular means above the ventricles, atria i.
Normally, heart rate and rhythm are carefully controlled by a power management system. In atrial tachycardia, accelerated heartbeat disorders are triggered by initiation or transmission of electrical impulses that cause contractions of the heart. Usually, heart rate during episodes of atrial tachycardia is located between 150 and 200 beats per minute, occasionally more than 300 per minute.
After a while, the heart returns to a normal heart rate (from 60 to 100 beats per minute). Other names for the disorder are synonymous:”paroxysmal supraventricular tachycardia” or “paroxysmal atrial tachycardia.”
In some situations, increased heart rate is normal (e.g., during exercise, fever, stress). This fast heart rate, called sinus tachycardia, is a normal response to physical or mental stress factors and is not considered pathological (abnormal).
Atrial tachycardia pathological forms are:
– Atrial fibrillation (which is the most common)
– Supraventricular tachycardia with atrioventricular entry, including syndrome
A common cause of supraventricular tachycardia is the electrical circuits on the existence of abnormal heart, as happens in atrioventricular tachycardia and atrial tachycardia, and this happens frequently in individuals who have other heart disease. Nobody knows the exact cause of this phenomenon. Some experts believe that by re-entry tachycardia (especially for Wolf-Parkinson-White syndrome) is inherited.
– Overdose of drugs
– Other disease conditions such as chronic obstructive pulmonary disease, heart failure, pneumonia or metabolic disorders.
Some risk factors related to lifestyle choices triggering an episode of supraventricular tachycardia, as is the case of consumption of excessive amounts of coffee, cigarettes or alcohol or using drugs such as cocaine or methamphetamines (central nervous system stimulants). The decongestant medication (used to treat colds) may contain substances that can induce tachycardia. Doctors advise caution regarding the use of pharmaceutical products that can be bought from pharmacies without a prescription, as many have in their caffeine content, ephedrine plant “hung me” and other stimulants of the heart.
A special form of supraventricular tachycardia, multifocal atrial tachycardia (TAM), can be triggered by certain diseases and preexisting chronic obstructive pulmonary disease, pneumonia, heart failure (deterioration of heart function) and pulmonary embolism (one or more of the pulmonary arteries are clogged and thus, the territory served by them will not be well vascularized and will generate necrosis, losing its function).
Because it has been hypothesized that Wolff-Parkinson-White syndrome may be genetically inherited, doctors recommend those who have close relatives suffering from this condition to consult a specialist to determine if there is opportunity to further develop this rhythm disorder.
Because deciding the type of treatment of tachycardia depends on the suffering patient is very important to establish an exact diagnosis. Sometimes the diagnosis of supraventricular tachycardia can be established only through a routine medical examination, in conjunction with establishment of personal and family history of the patient’s history (the other patient had a disease and its close relatives) and by making some simple tests.
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