How dangerous is arrhythmia?
Young people are often not aware of the threats that threaten a variety of heart rhythm disorders (in common parlance they are referred to as «arrhythmia»). What is this disorder and what is their danger?
The main danger of arrhythmias lies in its temporary suspension that could face sudden death. Arrhythmias can be fatal, which almost always lead to serious complications, and relatively safe. To understand this question, you need to know as you receive a normal heart rhythm.
The heart rhythm normal
Source of heart rate, as well as the main co-ordinating structure is the conducting system of the heart consisting of conductive beams by special branching in the thickness of the myocardium. The heart muscle (myocardium) in its structure is a unique striated muscle of the particular structure that nowhere else in the body is not found. It is a «functional syncytium» that is, can be excited very quickly, almost immediately, and so immediately «reset» itself with excitement. In addition, myocardial no concept of «tone», which are other muscles.
Source of heart rate is predserdno-the sinoatrial node, whose cells are capable of spontaneous excitation in the rhythm of 60 – 80 beats per minute. The activity of this node is changed under the influence of nervous and humoral regulation: the vagus nerve when activated, slows the heart rate and the release of catecholamine – adrenaline quickens it. After the occurrence of the main pulse of his need to breed for all four chambers of the heart and provide the correct sequence of reduction: when reduced ventricles – the Atria relax, and Vice versa.
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There is a significant pattern: the lower the Executive body in the hierarchy of conduction system, the more frequency it can be reduced. Thus, the Atria and ventricles can, «repeatables», start to flicker with a frequency 300 – 600 per minute. What is dangerous similar disorganization of ventricular contraction? What it actually means stopping of blood circulation, loss of consciousness and clinical and possibly biological death.
Conducting system ensures the strict control not only over the conduct impulse to the deepest parts of the heart, but the suppression of the spontaneous activity of individual muscle fibers, which can begin uncontrollably excited randomly, not giving rise to an effective contraction.
What arrhythmia is not dangerous to life?
Surprisingly, a dangerous arrhythmia may not be felt by the person. The patient may be bad, but from the heart, he can feel nothing. Only by pulse (for example, atrial fibrillation), you can define a thin thread of intermittent and spasmodic contractions. It is the ventricles as the forces trying to maintain sinus rhythm and atrial, «exhausted» out of rhythm, not only not help, but hinder the flow of blood. Felt mostly harmless condition, which are referred to as «sinus arrhythmia», or «sinus arrythmia». Just, for whatever reason (anxiety, hormonal changes in the body, overheating on a hot beach, a visit to the baths, physical exercise, drinking strong coffee or Smoking) there is an extraordinary reduction, and heart for a few seconds drops out of a single rhythm.
In the chest there is an unpleasant feeling, as if the heart «hooted down.» Later, a second and a half after a pause, where the heart is not reduced, the pulse is restored with a sense of serious push. This picture is very scary neurotic personalities, especially if the premature beats appear in a row. Adrenaline in this case, it may speed up heart rate together with the manifestation of extrasystoles and even lead to fainting.The arrhythmias include tachycardia (increased heart rate) and bradycardia (slowing down). Within reasonable limits, the normal heart rate at rest ranges from 60 to 80 beats per minute.
How to measure pulse rate
To measure the pulse you need to rest, preferably in the morning before getting up from the bed, and in the evening, after you went to bed. The night the old physicians called the «Kingdom of the vagus nerve». This nerve which is the longest cranial nerve of the man, twisting around the heart, and «ordered» him to reduce the number of reductions and to lower the pressure. So in the morning you can often determine the minimum frequency. In the evening, after an active period of daytime wakefulness, heart rate can be higher by 10 – 20 beats – this is normal.
To measure the pulse should be within one minute, resting on the radial artery four fingers of the other hand (except the thumb), which should fix the wrist. In that case, if the pulse wave can be traced under all the fingers you have found the correct location.
As already mentioned, the main danger of arrhythmia associated with the development of flicker and flutter, the ventricles. In addition, adults and children can experience the following States:
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- Atrioventricular blockade. This is the state in which you sent down into the ventricles, the impulses do not reach the destination for different reasons: «useful signal» is blocked, interrupted or lost. The danger may appear with age or during exercise. In extreme cases, it may be a condition in which the ventricles and the Atria pump in isolation, independently from each other.
- Ventricular fibrillation – disorganized activity of the myocardium.
- Ventricular tachycardia and ventricular premature beats – these types of arrhythmias that are only visible on the ECG, unable to fall back to ventricular fibrillation.
In conclusion, I must emphasize that there are many types of fatal arrhythmias, but the most important factor that triggers their appearance is acute myocardial infarction. Therefore, to reduce the risk of severe arrhythmias should abandon bad habits, to follow the body weight and cholesterol levels in the blood to maintain a regime of motor activity, and are also more likely to experience positive emotions!