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Left bundle branch block information


Left bundle branch block
ECG characteristics of a typical LBBB showing wide QRS complexes with abnormal morphology in leads V1 and V6.
SpecialtyCardiology, Emergency Medicine

Left bundle branch block (LBBB) is a conduction abnormality in the heart that can be seen on an electrocardiogram (ECG).[1] In this condition, activation of the left ventricle of the heart is delayed, which causes the left ventricle to contract later than the right ventricle.

  1. ^ "Conduction Blocks". Department of Physiology. Kansas City University of Medicine & Biosciences. Archived from the original on 23 May 2009. Retrieved 20 January 2009.

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Left bundle branch block

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right bundle branch block (RBBB) is a heart block in the right bundle branch of the electrical conduction system. During a right bundle branch block, the...

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distinguished from, left bundle branch block (LBBB). It is caused by only the left anterior fascicle – one half of the left bundle branch being defective. It is...

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physiologic change. Conduction defects such as left bundle branch block or left anterior fascicular block can cause LAD on the ECG. Pre-excitation syndrome...

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one in the right bundle branch, and two in the left bundle branch the left anterior fascicle and the left posterior fascicle. A block at any of these levels...

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Bifascicular block is characterized by right bundle branch block with left anterior fascicular blockleft bundle branch block, or right bundle branch block with...

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may occur at the left or right bundle branches ("bundle branch block") or the fascicles of the left bundle branch ("fascicular block" or "Hemiblock")...

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block Trifascicular block Bifascicular block (RBBB with fascicular block) Right bundle branch block (RBBB) Left bundle branch block (LBBB) Intraventricular...

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arrhythmias, left atrial enlargement, and sometimes intraventricular conduction defects and low voltage. When left bundle-branch block (LBBB) is accompanied...

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Nicholas Y.; Witt, Chance M.; Oh, Jae K.; Cha, Yong-Mei (2020). "Left bundle branch block". Circulation: Arrhythmia and Electrophysiology. 13 (4): e008239...

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that looks like: Left bundle branch block Left anterior fascicular block Left posterior fascicular block Right bundle branch block This is in contrast...

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Hypokalemia Right or left ventricular hypertrophy Intraventricular conduction abnormalities (e.g., right or left bundle branch block, WPW, etc.) Hypothermia...

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changes indicating acute heart damage include: ST elevation, new left bundle branch block and ST depression amongst others. The absence of ECG changes does...

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Heart failure

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left ventricles. This is especially problematic in people with left bundle branch block (blockage of one of the two primary conducting fiber bundles that...

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conduction via the His-Purkinje system, resulting in right or left bundle branch block (RBBB or LBBB), syncope, and occasionally sudden cardiac death...

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the posterior bundle as well as its dual blood supply makes isolated LPFB rare. Left anterior fascicular block Left bundle branch block Kevin J. Koop;...

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Myocardial infarction

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on an electrocardiogram (ECG), such as ST segment changes, new left bundle branch block, or pathologic Q waves Changes in the motion of the heart wall...

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QRS complex

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infarction, but it may also be caused by left bundle branch block, Wolff–Parkinson–White syndrome, right and left ventricular hypertrophy, or a faulty ECG...

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years old, in the absence of a right bundle branch block (RBBB) Ventricular tachycardia with a left bundle branch block (LBBB) morphology, with superior axis...

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Third-degree AV block or complete AV block Right bundle Incomplete right bundle branch block (IRBBB) Complete right bundle branch block (RBBB) Left bundle Incomplete...

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heart. The bundle of His branches into the left and the right bundle branches, which run along the interventricular septum. The left bundle branch further...

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The key indication for CRT is left bundle branch block (LBBB) of the heart, a cardiac abnormality leading to delayed left ventricular contraction. LBBB...

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It is seen in conditions that delay left ventricular emptying (e.g., aortic stenosis, left bundle branch block). "The Auscultation Assistant – Split...

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supraventricular tachycardias with aberrant conduction from a pre-existing bundle branch block are commonly misdiagnosed as ventricular tachycardia. Other rarer...

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and progressive muscular weakness, electrocardiographic changes of bundle branch block or ST-segment elevations as seen in ischemic myocardial threat, and...

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mimics of acute myocardial infarction, which include left ventricular hypertrophy, left bundle branch block, paced rhythm, early repolarization, pericarditis...

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