Tachycardia

Description:

Tachycardia (other - Greek  — bystry and  — heart) — increase in heart rate from 90 beats per minute. It is necessary to distinguish tachycardia as the pathological phenomenon, that is increase in ChSS at rest, and tachycardia as the normal physiological phenomenon (increase in ChSS as a result of an exercise stress, as a result of nervousness or fear).

Pathological tachycardia is harmful for several reasons. First, at frequent heartbeat overall performance of heart as ventricles do not manage to be filled with blood therefore arterial pressure goes down decreases and inflow of blood to bodies decreases. Secondly, conditions of blood supply of the heart as it makes a lot of work in unit of time worsen and demands more oxygen, and bad conditions of blood supply of heart increase risk of an ischemic disease and the subsequent heart attack.

Tachycardia symptoms:

Tachycardia symptoms — heartbeat, weakness, dizziness, feeling of shortage of air, feeling of a fast loss of consciousness.

For the best understanding of a problem it is necessary to remember in brief how heart is arranged. It consists of four cavities (cameras) — from above two auricles, it is lower than two ventricles. Reduction of ventricles and auricles is coordinated and subordinated to electric impulses. In the field of the right auricle there is a texture of nervous cells which is called — a sinus node. It is a peculiar biological generator of electric impulses (it also call "pacemaker"). From it impulses run up on heart and in a certain order cause reduction of muscle fibers of a myocardium — there is a reduction of heart.

Owing to various reasons the impulsation from a sinus node accelerates that leads to a cardiopalmus which is called sinus tachycardia. In some cases in heart other pacemaker who the impulsation diskoordinirut carrying out impulses that leads to disturbance of normal cardiac performance forms. Depending on an arrangement of such center of tachycardia divide on supraventricular, (supraventricular) and ventricular, but it is possible to specify localization first of all by means of an ECG. Ventricular tachycardias the heaviest, quite often proceed with a loss of consciousness, and can even lead to death.

Tachycardia reasons:

Tachycardia is not a disease, but a symptom as it can arise as display of many various diseases. As the most frequent reasons of tachycardia serve disturbances of the autonomic nervous system, disturbance of endocrine system, disturbance of a hemodynamics and various forms of arrhythmia.

Treatment of Tachycardia:

Treatment of tachycardia demands use of antiarrhytmic drugs and implementation of actions for treatment of a basic disease and elimination of the factors promoting developing of arrhythmia (glikozidny intoxication, electrolytic disturbances, an anoxemia).