title: Regularly irregular narrow complex tachycardia: what is the mechanism?
authors: Lahey Clinic Medical Center, Division of Cardiovascular Medicine, Burlington, MA 01805, USA.
authors: Jonathan S
authors: JS
authors: Silver
authors: Benjamin R
authors: BR
authors: Smith
authors: Roy M
authors: RM
authors: John
mesh_terms: D004562:Electrocardiography; D005260:Female; D006801:Humans; D008875:Middle Aged; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000175:diagnosis* / Q000503:physiopathology*