Left Posterior Fascicular Block by ECG Finding

**Semantic type:** Finding

**Definition:** An electrocardiographic finding of an S1Q3 pattern and QRS axis greater than or equal to 120 degrees. It is usually seen in association with other abnormalities (e.g. RBBB or RVH). (CDISC)

**Synonyms:** - LEFT POSTERIOR FASCICULAR BLOCK - LPFB - Left Posterior Fascicular Block - Left Posterior Fascicular Block by EKG Finding - Left Posterior Hemiblock - Left Posterior Hemiblock - Left posterior fascicular block