Tachycardia Reciprocnaya Najeludochkovaya

Tachycardia Supraventricular Reciprocal. Reciprocal tachycardia of the supraventricular region of the heart is a sinus arrhythmia, which is characterized by an unchanged heart rate exceeding 150 beats per minute, while maintaining normal contractile function of the atria and ventricles. The pathology is often accompanied by impaired cardiohemodynamics. Such disorders are found in a quarter of the population (about 20% of the adult population of the planet), mainly in older people, but the disease can occur at any age. The disease leads to the development of heart failure, stroke and death of the patient. Some cases are misdiagnosed as atrial fibrillation, sinusoidal arrhythmia. With timely and high-quality treatment, the prognosis is favorable. Doctors consider isolated episodes of supraventricular tachycardia as the cause of persistent atrial fibrillation. By changing the pattern of activation of cardiac tissue to the opposite, reciprocal changes cause atrial tachycardia (pendulum rhythm). The mechanism of occurrence of supraventricular tachyarrhythmias differs from that of atrial fibrillation in several respects. Namely, in the case of supraventricular tachycardia, excitation impulses do not come from the points of the sinus node, but from areas of the myocardium of the atria or right ventricles located near the mouth of the coronary vessels or the coronary sulcus. Tachyarrhythmias of this type are also called automatic, since the frequency of impulses in the atria depends on how fast the rate of blood movement is through the coronary vessels and pulmonary trunk. Thus, the heart rate in this case is independent of the heart rate of the normal sinus node.

Presisting tachycardia. Persistent cardiac arrhythmia occurs most often with supraventricular (supraventricular) pathology. This type of disorder is manifested by a clear picture of the heart. Characteristic features:

1. Heart rate is 250 or more beats per minute. 2. Heart sounds are rhythmic and clear. 3. During the study, neither the duration of RR intervals nor the correctness of sinus rhythm changes. 4. There are no interpulse waves. An ECG gives the right to qualify such arrhythmia as true supraventricular tachycardia. 5. Since sinus and reciprocated contractions often alternate on the electrogram, doctors raise the question of the degree of hemodynamic disorder

**Tachycardia** - accelerated or rapid heartbeat. There are physiological, pathological and sinus tachycardia. Bradycardia is also distinguished - a decrease in heart rate, you can find the name decreased heart rate. In medicine, a distinction is made between physiological (physiological manifestations), that is, those associated with an increase in the level of excitatory impulses from the central nervous system, and pathological ones, caused by dysfunction of the conduction system of the heart. Rapid heartbeat can also be a symptom or be combined with some symptoms of the following diseases (loss of pulse, fainting (dizziness), feeling of shortness of breath, etc.). Tachycardia is an increase in heart rate. With tachycardia, the QRS complex has a vertical orientation. But at the same time, the normal morphology of the P wave and the RS-T segment is preserved. Paroxysmal (extrasystolic) tachycardia differs from paroxysmal atrial fibrillation only in the nature of the rhythm.

**Sinus tachycardia:** • Heart rate (average) 90–130 per minute; • ECG morphology corresponds to sinus rhythm; Heart rate does not change as physical activity increases; pause between contractions is more than 1.5 s. As a rule, sinus tachycardia does not pose any particular danger to humans, but it is still worth immediately contacting a general practitioner or cardiologist if an increase in heart rate causes new unpleasant sensations.