title: ECGs in the ED.
mesh_terms: D003490:Cyanosis / Q000209:etiology; D004562:Electrocardiography / Q000379:methods*; D004636:Emergency Service, Hospital; D005260:Female; D006801:Humans; D018636:Hypoplastic Left Heart Syndrome / Q000175:diagnosis* / Q000601:surgery; D007223:Infant