The legs of the bundle are related to the cardiac conduction system. They are designed to convey the electrical impulse to the ventricles of the main muscle. The bundle consists of the back, as well as the left and right legs, the blockade of which can lead to unpleasant consequences. Each of them is responsible for its own part of the left ventricle. Between the branches is a network of anastomoses.
Blockade of the anterior branch of the left branch of the bundle
During this state, the pathogen acts on the left and right sides of the interventricular septum. When the ECG procedure passes, the results show a deep tooth S, as well as a high R. At the same time, the total index begins to deviate to the left and up. There can be several reasons for the occurrence:
- myocardial infarction ;
- exacerbation of angina pectoris;
- myocarditis;
- Hypertension and other malformations affecting the left ventricle.
The most common manifestations are:
- scar scar tissue of the left ventricle;
- hypertrophy of the atria;
- blockade of anastomoses between two branches.
Blockade of the posterior branch of the left branch of the bundle
In this case, the impulses pass through the anterior branch and act on the lateral zone of the left ventricle. At the same time, the QRS indicator on the electrocardiogram tends up, to the right and forward. In this case, R also shows a high tooth, and S - a deep tooth. Most often this type of blockade occurs after myocardial infarction of the left ventricle or as a result of the development of problems with the pulmonary artery. As consequences, hypertrophy, coronary insufficiency develops and there is an excessive load on the left atrium.
Complete blockade of the left bundle butt and its consequences
In the case of the development of this unpleasant disease, it blocks the passage of the pathogen, not letting it pass to the left side of the septum. Also, the path to the left ventricle becomes unavailable, so the first stage of the blood supply process does not occur. In this case, the pulse on the right leg goes in the usual way - the excitation of the corresponding interventricular septum is carried out in a timely manner, after
Incomplete left bundle branch blockade
This ailment appears as a result of the inferior conductivity of one of the legs. It is characterized by a slower transmission of the pathogen from the atria to the ventricles. As a result, the process takes more time.