title: A single atrial extrastimulus during a short RP tachycardia.
authors.affiliation: University Health Network, Toronto, Ontario, Canada.
authors.forename: Raja
authors.initials: R
authors.lastname: Selvaraj
authors.forename: Krishnakumar
authors.initials: K
authors.lastname: Nair
authors.forename: Anandaraja
authors.initials: A
authors.lastname: Subramanian
authors.forename: Kumaraswamy
authors.initials: K
authors.lastname: Nanthakumar
mesh_terms: D000328:Adult; D004562:Electrocardiography; D022062:Electrophysiologic Techniques, Cardiac; D005260:Female; D006325:Heart Atria / Q000503:physiopathology; D006801:Humans; D013610:Tachycardia / Q000503:physiopathology*