title: Narrow QRS Tachycardia with RR Alternans: What Is the Mechanism?
authors.affiliation: Department of Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India.
authors.forename: Krishna Kumar
authors.initials: KK
authors.lastname: Mohanan Nair
authors.affiliation: Department of Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India. kknnamboodiri@gmail.com.
authors.forename: Narayanan
authors.initials: N
authors.lastname: Namboodiri
authors.affiliation: Department of Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India.
authors.forename: Bharatraj
authors.initials: B
authors.lastname: Banavalikar
authors.affiliation: Department of Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India.
authors.forename: Ramasubramanian
authors.initials: R
authors.lastname: Nallasivan
authors.affiliation: Department of Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India.
authors.forename: Ajitkumar
authors.initials: A
authors.lastname: Valaparambil
authors.affiliation: Department of Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India.
authors.forename: Anees
authors.initials: A
authors.lastname: Thajudeen
authors.affiliation: Department of Cardiology, Sree Chitra Tirunal Institute for Medical Sciences and Technology, Thiruvananthapuram, Kerala, India.
authors.forename: Jaganmohan
authors.initials: J
authors.lastname: Tharakan
mesh_terms: D001283:Atrioventricular Node / Q000503:physiopathology; D004562:Electrocardiography; D006801:Humans; D008297:Male; D008875:Middle Aged; D013610:Tachycardia / Q000503:physiopathology*
keywords: AH alternans; AV reentrant tachycardia; RR alternans; dual AV nodal physiology