title: Letter: Clinical use of an indwelling umbilical-artery electrode.
mesh_terms: D004567:Electrodes, Implanted; D006801:Humans; D007231:Infant, Newborn; D008991:Monitoring, Physiologic; D010100:Oxygen / Q000097:blood; D014469:Umbilical Arteries
chemical_list: D010100:Oxygen