title: Heparin resistance during cardiopulmonary bypass. The role of heparin pretreatment.
mesh_terms: D000368:Aged; D001777:Blood Coagulation / Q000187:drug effects*; D002315:Cardiopulmonary Bypass; D003327:Coronary Disease / Q000601:surgery; D004305:Dose-Response Relationship, Drug; D004351:Drug Resistance; D005260:Female; D006493:Heparin / Q000008:administration & dosage / Q000097:blood / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D008875:Middle Aged; D008944:Mitral Valve Insufficiency / Q000601:surgery; D010314:Partial Thromboplastin Time; D011300:Preoperative Care; D014914:Whole Blood Coagulation Time
chemical_list: D006493:Heparin