title: ECG of the month. Rise and fall. Narrow-QRS tachycardia with electrical alternans.
authors.affiliation: Dept of Medicine, Texas Tech Regional Academic Health Center, El Paso.
authors.forename: J I
authors.initials: JI
authors.lastname: Martinez-Lopez
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D004562:Electrocardiography; D005260:Female; D006801:Humans; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000175:diagnosis*; D013613:Tachycardia, Ectopic Junctional / Q000175:diagnosis*