title: ECG of the month. End of the block. Second-degree AV block.
authors.affiliation: Dept of Medicine, Texas Tech Regional Academic Health Center, El Paso.
authors.forename: J I
authors.initials: JI
authors.lastname: Martínez-López
mesh_terms: D000368:Aged; D004562:Electrocardiography; D006327:Heart Block / Q000175:diagnosis* / Q000503:physiopathology; D006801:Humans; D008297:Male