Bifascicular Block by ECG Finding

**Semantic type:** Finding

**Definition:** An electrocardiographic finding comprising right bundle branch block and left anterior fascicular block, or right bundle branch block and left posterior fascicular block. Defects occurring in two of the three divisions of the conduction system of the heart are considered bifascicular blocks. Technically left bundle branch block may be considered a bifascicular block.

**Synonyms:** - BIFASCICULAR BLOCK - Bifascicular Block - Bifascicular Block by EKG Finding - Bifascicular block