Branch Block And Hemiblock (Fascicular)

A branch block is a partial or complete interruption of the pulse conduction in the legs of the His-Purkinje system. The hemiblock (fascicular) is a partial or complete interruption of the impulse conduction in one of the fascicles of the left bundle. The two disorders frequently co-exist. In general, both are asymptomatic. But where it appears one of the two blocks, this points to a heart disease. The diagnosis results from the ECG. A special treatment is necessary.

Line blockages can be caused by many heart diseases. This includes the intrinsic degeneration without an associated cardiac dysfunction.

A branch block is a partial or complete interruption of the pulse conduction in the legs of the His-Purkinje system. The hemiblock (fascicular) is a partial or complete interruption of the impulse conduction in one of the fascicles of the left bundle. The two disorders frequently co-exist. In general, both are asymptomatic. But where it appears one of the two blocks, this points to a heart disease. The diagnosis results from the ECG. A special treatment is necessary. Line blockages can be caused by many heart diseases. This includes the intrinsic degeneration without an associated cardiac dysfunction. Electrical path through the heart of a right bundle branch block (RSB right bundle branch block.) Can occur in apparently healthy people. Even with an anterior myocardial infarction, a RSB can show and indicate a significant myocardial damage. In a recent onset RSB, the patient should be evaluated for an underlying heart disease, but often there is here no positive findings. A temporary RSB can occur after a pulmonary embolism. Although a RSB deforms the QRS complex, it does not affect seriously the ECG diagnosis of myocardial infarction. Right bundle branch block. The left bundle branch block (LBBB LSB.) Is brought substantially more frequently than the RSB with a structural heart disease in conjunction. The LSB makes the diagnosis of myocardial infarction by ECG is usually impossible. Left bundle branch block. A hemiblock concerns the anterior or posterior fascicles of the left leg of the His-Purkinje system. The interruption of the left anterior fascicle causes the left anterior hemiblock, which is supported by a modest QRS prolongation in (<120 msec) and a QRS-axis in the frontal plane of <-30 ° (left deviation). The left-posterior hemiblock shows a QRS-axis in the frontal plane of> 120 °. A hemiblock is frequently brought just like the LSB with a structural heart disease in conjunction. A hemiblock may be present in combination with other conduction disturbances: RSB plus left anterior or left-posterior hemiblock (bifaszikulärer block), the left-anterior and left-posterior hemiblock plus RSB plus AV-block first degree (also referred to as trifaszikulärer block; However, the term is not correct in this case, since an AV block, first degree is due to rule in the AV node). The term trifaszikulärer block refers to a RSB with alternating left anterior and left posterior hemiblock or alternating LSB and RSB. A bi- or trifaszikulärer block after myocardial infarction indicate a massive cardiac damage. A bifaszikulärer block must only be treated if also an intermittent AV block II. Or III. Degree there. A real trifaszikulärer block makes an immediate pacing and then a permanent pacemaker stimulation necessary. Nonspecific intraventricular conduction defects manifested by a prolonged QRS complex of> 120 msec, the QRS characteristics, however, are not typical of an LSB or RSB. It is believed that the conduction delay occurs beyond the Purkinje fibers, and results from a slow conduction of a myocardial cell to another. It is indicated no specific treatment.

Health Life Media Team

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