NCIt synonyms : First Degree Atrioventricular Block; First Degree AV Block;
NCIt related terms : Atrioventricular Block, First Degree; Atrioventricular block first degree;
NCIt 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.;
Alternative definition : CTCAE: A disorder characterized by a dysrhythmia with a delay in the time required
for the conduction of an electrical impulse through the atrioventricular (AV) node
beyond 0.2 seconds; prolongation of the PR interval greater than 200 milliseconds.; NICHD: Abnormally slow conduction of atrial electrical impulses to the ventricles.;