title: Narrow QRS Tachycardia With Varying VA and RR Intervals: 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 Mohanan
authors.initials: KK
authors.lastname: 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: 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; D006801:Humans; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000209:etiology*
keywords: AV node reentry; Wenkebach block; catheter ablation; retrograde conduction