Left anterior fascicular block.
D002037:Bundle-Branch Block / Q000175:diagnosis* / Q000209:etiology; D002312:Cardiomyopathy, Hypertrophic / Q000175:diagnosis; D003937:Diagnosis, Differential; D004562:Electrocardiography; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000175:diagnosis