New Drug No Substitute for Standard Blood-Cl...(t. The currently available treatments ar...),Health
t. The currently available treatments are effective but necessitate careful monitoring and require patients to modify their diets and watch what medications they take to prevent complications.
"We wanted to find a medication that was a little safer, more patient-friendly and that could improve the quality of life," Buller said.
Two of the studies, published in the Sept. 13 issue of the New England Journal of Medicine, compared the use of idraparinux to standard therapy (heparin, followed by warfarin) for both DVT and pulmonary embolisms.
The DVT study included 2,904 people, and the pulmonary embolism study had 2,215 participants. In each group, the study volunteers were randomly chosen to receive either once-weekly injections of idraparinux or heparin, followed by three to six months of warfarin therapy.
The incidence of recurrence in the DVT group was 2.9 percent for those on idraparinux compared to 3.0 percent for those on standard therapy. In the pulmonary embolism group, the rates of recurrence were 3.4 percent in the idraparinux group versus just 1.6 percent in the usual treatment group.
Buller said that the frequency of recurrence in the standard therapy group was extremely low -- much lower than would normally be expected -- in the pulmonary embolism study.
"We've never seen this low frequency in studies. It's always around 3 to 4 percent," said Buller, who believes that this is likely a chance finding.
The third study, also published in the Sept. 13 New England Journal of Medicine, compared the use of idraparinux to a placebo in people who had already completed six months of treatment with either warfarin or idraparinux.
Just under half of the 1,215 people recruited for this study were randomly selected to receive six months of idraparinux, and the rest received a placebo. Just 1 percent in the idraparinux group had a recurrent blood clot, compared to almos
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