[The effect of Taprostene on platelet activation and clinical course after percutaneous transluminal angioplasty].

In a double blind pilot study, we examined the effects of the stable prostacyclin derivate taprostene compared to a combination of aspirin and dipyridamole on platelet uptake and clinical outcome after peripheral percutaneous angioplasty. Taprostene was administered to 19 patients as a continuous intravenous infusion from 2 hours before until 8 (n = 6) or 24 (n = 6) hours after angioplasty; 7 control patients were given a combination of 330 mg aspirin and 75 mg dipyridamole. Uptake of 111-indium labelled platelets at the site of the PTA was measured 3 hours before and 4 and 24 hours after angioplasty. Clinical parameters were obtained one day before PTA, on the following day and 3 months after the procedure. There was a tendency for slightly higher platelet uptake ratios in the taprostene groups as compared to the control group especially in patients requiring technically difficult procedures. There were no differences between the 3 groups with regard to primary success or periinterventional complications. In the taprostene patients, 3 early reocclusions were found up to 72 hours after the procedure and 1 late reocclusion within 3 months. In the control group, no reocclusion was apparent in the observation time. No advantages were found when taprostene was administered during angioplasty as compared to conventional treatment with aspirine and dipyridamole.

RCT Entities:   Population Interventions Outcomes