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left anterior fascicular block
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left anterior fascicular block

what is left anterior fascicular block?  Found in an EGG.?
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976897_tn?1379171202
One of the nerves on your heart isn't working as it should do, the one feeding a signal into your left ventricle. They call it a block, but the signal is still activating your left ventricle, causing it to pump but there's a very slight delay. You was probably born with this defect and nothing can be done to correct it unless you have a pacemaker but there would have to be a concerned delay in the left ventricle for this. You are at greater risk of needing a pacemaker at some time with this condition and It's not really dangerous.
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242508_tn?1287427246
There are three fascicles in the heart.  They can be thought of as the electrical system of the heart with each fascicle being a separate cable that transfers electical impulses to various parts of the heart.  A left antarior block implies that one of those fasciles isn't working as well and the other two are filling in for it.  This may be related to a prior heart attack, but more so due to an older age and degenerative disease in the conduction system.  It does not portend a poor prognosis.  
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