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  • Title: Continuous intravenous dosing with ciprostene using a portable pump in ambulatory patients.
    Author: Wolf DL, Metzler CM, Froeschke MO, Luderer JR.
    Journal: J Clin Pharmacol; 1993 Feb; 33(2):150-3. PubMed ID: 8440764.
    Abstract:
    Parenteral compounds present special drug delivery challenges. This open-label study evaluated a portable infusion pump as a means to deliver intravenous ciprostene, a stable prostacyclin analog. Ten patients with peripheral vascular disease and claudication received ciprostene (titrated to 120 ng/kg/min) infused over 8 hours 1 day per week for 4 consecutive weeks. Patients successfully maintained the pump strapped to the waist. The mean +/- standard deviation delivery error, with volumes of 6 to 10 mL over 8 hours, was -0.895 +/- 3.177%. Accordingly, the pump performed well with a potent drug under these clinical conditions. Headache, flushing, and infusion site irritation during infusion were the most frequent side effects. Blood pressure remained unchanged during infusion; however, heart rate increased significantly (P < .05, maximum increase was 13.9 +/- 2.1 beats per minute [mean +/- standard error of the mean]. Mean (+/- standard error of the mean) relative claudication times on treadmill remained unchanged; however, absolute claudication times increased (P < .05) from 6.6 +/- 1.8 to 10.0 +/- 2.2 minutes. Ciprostene inhibited adenosine diphosphate-induced platelet aggregation by 56.0 +/- 12.7% (mean +/- standard error of the mean). Mean template bleeding times and plasma concentrations of platelet-specific proteins (beta-thromboglobulin, platelet factor 4) did not change.
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