title: Dihydroergotamine-heparin to prevent postoperative deep vein thrombosis.
mesh_terms: D002986:Clinical Trials as Topic; D004087:Dihydroergotamine / Q000009:adverse effects / Q000627:therapeutic use*; D004338:Drug Combinations / Q000009:adverse effects / Q000627:therapeutic use; D006493:Heparin / Q000009:adverse effects / Q000627:therapeutic use*; D006495:Heparin, Low-Molecular-Weight; D006801:Humans; D007279:Injections, Subcutaneous; D011183:Postoperative Complications / Q000453:epidemiology*; D013924:Thrombophlebitis / Q000517:prevention & control*
chemical_list: D004338:Drug Combinations; D006495:Heparin, Low-Molecular-Weight; C031388:heparin-dihydergot; D004087:Dihydroergotamine; D006493:Heparin