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Clinical Experiences with 4-Hydroxycoumarin Anticoagulant No. 63 and the Antagonistic Effect of Menadione and Vitamin K 1
Author(s) -
Hugh H. Hanson,
Nelson W. Barker,
Frank D. Mann
Publication year - 1951
Publication title -
circulation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 7.795
H-Index - 607
eISSN - 1524-4539
pISSN - 0009-7322
DOI - 10.1161/01.cir.4.6.844
Subject(s) - hypoprothrombinemia , medicine , vitamin k , anticoagulant , menadione , prothrombin time , thrombosis , vitamin , coumarin , pharmacology , vitamin k deficiency , chemistry , oxidative stress , organic chemistry
The successful use of dicumarol in the prevention of intravascular thrombosis and subsequent embolism has led to the investigation of other coumarin compounds as therapeutic anticoagulants. 4-Hydroxycoumain anticoagulant No. 63 is such a compound. Like dicumarol, it induces hypoprothrombinemia and daily tests of prothrombin time are necessary as a guide to dosage. Our experience indicates that a less fluctuating and somewhat more consistent therapeutic hypoprothrombinemia can be established and maintained with anticoagulant No. 63 than with dicumarol. The potential disadvantage of the prolonged hypoprothrombinemia after administration is stopped is counter balanced by the strong and relatively rapid antagonistic effect of vitamin K1.

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