Left Posterior Fascicular Block
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Heart Block -> Left Posterior Fascicular Block
Left Posterior Fascicular Block Definition
An impairment of transmission of the cardiac electrical impulse along the fibers of the left posterior fascicle. In pure left posterior fascicular block (LPFB), the impulse emerges from the unblocked anterosuperior division, thus producing small q waves in leads II, III, and aVF. Thereafter, the impulse moves through the electrically predominant left ventricle in an inferior and rightward direction, thus explaining the S waves in leads I and aVL as well as the R waves in leads II, III, and aVF.
Left Posterior Fascicular Block Synonyms
Left Posterior Fascicular Block, LEFT POSTERIOR FASCICULAR BLOCK, LPFB, Left Posterior Hemiblock, Left posterior fascicular block
Terms in Left Posterior Fascicular Block category
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