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DOI: 10.1055/s-0038-1650013
Heparin Induced Thrombocytopenia: a Prospective Study
Publikationsverlauf
Received 25. Oktober 1979
Accepted 30. Januar 1980
Publikationsdatum:
13. Juli 2018 (online)
![](https://www.thieme-connect.de/media/10.1055-s-00035024/198001/lookinside/thumbnails/10-1055-s-0038-1650013-1.jpg)
Summary
Thrombocytopenia occurred in 11.6% of 43 patients prospectively randomized to receive either bovine lung or porcine mucosal heparin. Four patients received bovine heparin and developed mild to moderate thrombocytopenia after eight to twelve days which resolved when therapy was stopped in one to six days. One patient received porcine heparin and developed mild thrombocytopenia after four days. The thrombocytopenia resolved in one day in spite of continued heparin therapy.
Serial blood samples from the five thrombocytopenic patients were studied for their in vitro effect upon normal platelets. These samples induced a high release of serotonin from normal platelets or caused normal platelets to aggregate in the presence of additional heparin. Release or aggregation coincided with or occurred shortly after nadir platelet counts were reached and returned toward normal following cessation of heparin.
Our data constitute the first prospective study of heparin induced thrombocytopenia in which serial blood samples were studied before, during and following the onset of thrombocytopenia. They strongly support the presence of a heparin dependent co-factor, presumably an antibody, as the cause for thrombocytopenia.
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