title: Ergotism and heparin-dihydroergotamine prophylaxis.
mesh_terms: D003251:Constriction, Pathologic / Q000139:chemically induced; D004087:Dihydroergotamine / Q000009:adverse effects*; D006493:Heparin / Q000009:adverse effects; D006801:Humans; D011183:Postoperative Complications / Q000517:prevention & control; D013923:Thromboembolism / Q000517:prevention & control*; D014666:Vasomotor System / Q000187:drug effects*
chemical_list: D004087:Dihydroergotamine; D006493:Heparin