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A left posterior fascicular block (LPFB) is a condition where the left posterior fascicle, which travels to the inferior and posterior portion of the left ventricle, does not conduct the electrical impulses from the atrioventricular node. The wave-front instead moves more quickly through the left anterior fascicle and right bundle branch, leading to a right axis deviation seen on the ECG. The American Heart Association has defined a LPFB as: * Frontal plane axis between 90° and 180° in adults * rS pattern in leads I and aVL * qR pattern in leads III and aVF * QRS duration less than 120 ms The broad nature of the posterior bundle as well as its dual blood supply makes isolated LPFB rare. ==See also== * Left bundle branch block * Left anterior fascicular block 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Left posterior fascicular block」の詳細全文を読む スポンサード リンク
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