AV Block First Degree

**Semantic type:** Disease or Syndrome

**Definition:** A disorder characterized by an electrocardiographic finding of prolonged PR interval for a specific population. For adults one common threshold is a PR interval greater than 0.20 seconds.

**Synonyms:** - Atrioventricular Block, First Degree - Atrioventricular block first degree - First Degree AV Block - First Degree Atrioventricular Block