title: How useful are serum levels of cardiac drugs?
mesh_terms: D000889:Anti-Arrhythmia Agents / Q000097:blood* / Q000627:therapeutic use; D004071:Digitalis Glycosides / Q000097:blood* / Q000627:therapeutic use; D004206:Disopyramide / Q000097:blood; D006331:Heart Diseases / Q000097:blood / Q000188:drug therapy; D006801:Humans; D008012:Lidocaine / Q000097:blood; D010672:Phenytoin / Q000097:blood; D011342:Procainamide / Q000097:blood; D011433:Propranolol / Q000097:blood; D011802:Quinidine / Q000097:blood
chemical_list: D000889:Anti-Arrhythmia Agents; D004071:Digitalis Glycosides; D010672:Phenytoin; D008012:Lidocaine; D011433:Propranolol; D004206:Disopyramide; D011802:Quinidine; D011342:Procainamide