Sunday, 13 November 2016

Atrial Bigeminy

Atrial premature complexes (APCs) do not have a compensatory pause since they reset the sinus node, but atrial or supraventricular bigeminy can occur. If the APCs are very premature, the wave front can encounter a refractory AV node and not be conducted. This can be mistaken for sinus bradycardia if the APC is buried in the t wave since the APC will reset the SA node and lead to a long P-P interval. Atrial Bigeminy is a harmless, benign rhythm, and does not normally require treatment.