Depolarization of the left ventricle will be carried out by
Potential conduction blocks in the His bundle and left bundle branch (LBB)
Fascicular block involves the anterior or posterior fascicle of the left bundle branch
Left bundle branch block (LBBB) is a problem where the electrical impulse that controls your heartbeat is not working in the usual way
Episodic (transient/ intermittent) left bundle branch block (LBBB) has been associated with different conditions such as bradycardia, tachycardia, anesthesia, acute
Other conditions that can cause a left bundle branch block include: coronary
Methods: We
Imitation: left bundle
Electrocardiogram (ECG or EKG)
This problem affects your heart’s lower pumping chambers (ventricles), causing it to pump too slowly or out of rhythm (arrhythmia)
This creates a delay in electrical activation and contraction, which causes the
This image should be memorized
Ventricular activation therefore begins in the right ventricle and the right side of the interventricular septum
I can remember granting service connection for left bundle branch block a number of times; however, it generally warrants no more than a 0 percent evaluation
QRS > 120 ms in adults (>100 ms in children 4-16yo, and > 90 ms <4yo
Left bundle branch block (LBBB) is an abnormality of the electrical conducting system of the heart
Fascicular block involves the anterior or posterior fascicle of the left bundle branch
Reddy, M
Depolarization of the ventricles is delayed, resulting in a wide QRS complex of 0
(See also Overview of Abnormal Heart Rhythms and Overview of Heart Block
Ratio of Discordant ST Segment Elevation or Depression to QRS Complex Amplitude is an Accurate Diagnostic Criterion of Acute Myocardial Infarction in the Presence of Left Bundle Branch Block (Abstract 551)
Left bundle branch block may be due to conduction system degeneration or a reflection of myocardial pathology