title: The William Nelson ECG Quiz. Why is there a low QRS voltage?
mesh_terms: D000273:Adipose Tissue / Q000378:metabolism / Q000503:physiopathology; D004562:Electrocardiography; D006329:Heart Conduction System / Q000378:metabolism / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000378:metabolism* / Q000503:physiopathology; D012964:Sodium / Q000097:blood
chemical_list: D012964:Sodium