title: [Practical-theoric notions in electrocardiography. (IX)].
mesh_terms: D006332:Cardiomegaly / Q000175:diagnosis*; D004562:Electrocardiography; D006325:Heart Atria; D006327:Heart Block / Q000175:diagnosis*; D006801:Humans
vernacular_title: Noções teórico-práticas de electrocardiografie. (IX)