bifascicular block

In those with bifascicular block and no symptoms little with respect to treatment is needed.

Bifascicular block.

In the setting of right bundle branch block, right or left axis deviation may indicate bifascicular block.

Bifascicular block is a conduction abnormality in the heart where two of the three main fascicles of the His/Purkinje system are blocked.

This may be preceded by first-degree AV block, second-degree AV block, bundle branch block, or bifascicular block.

Some authors consider left bundle branch block (LBBB) to be a technical bifascicular block, since the block occurs above the bifurcation of the left anterior and left posterior fascicles of the left bundle branch.

Transcutaneous pacing is no longer indicated for the treatment of asystole (cardiac arrest associated with a "flat line" on the ECG), with the possible exception of witnessed asystole (as in the case of bifascicular block that progresses to complete heart block without an escape rhythm).