two hundred patients , with a mean age of 66.6 years and almost half with malignancy , were allocated to receive either 5,000 iu unfractionated heparin plus 0.5 mg dihydroergotamine mesylate twice daily or 1,500 iu low-molecular weight heparin plus 0.5 mg dihydroergotamine mesylate once daily together with one placebo injection per day .
C0019134
unfractionated heparin
C0019139
low-molecular weight heparin