Sinoatrial nodal reentry tachycardia
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Sinoatrial node reentrant tachycardia (SANRT) is caused by a reentry circuit localised to the SA node,
Diagnosis
Electrocardiogram
- SA node reentry results in a normal appearing p-wave that precedes a regular, narrow QRS complex.
- It is therefore impossible to distinguish on the EKG from ordinary sinus tachycardia.
- It may however be distinguished by its prompt response to vagal maneuvers.