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Abstract
Dicumarol has been given to 1,000 patients for the purpose of preventing postoperative
venous thrombosis, pulmonary embolism, and thrombophlebitis. We have found it effective
in preventing these complications in cases in which there has been nonfatal pulmonary
embolism, thrombophlebitis or a history of previous thrombosis or embolism, and when
the drug has been given prophylactically when no thrombosis or embolism has occurred.
There is a small risk of bleeding. This can be further minimized by proper administration
of the drug and rapid control of excessive prothrombin deficiency. Dicumarol should
not be given unless daily and consistently comparable Quick prothrombin time tests
are done. Consistently comparable prothrombin time tests depend on the use of thromboplastins
of constant potency or on the checking of each new batch of thromboplastin with various
dilutions of normal plasma. During the administration of dicumarol the prothrombin
should be kept between 10 and 30 per cent of normal. Excessive prothrombin deficiency
produced by dicumarol can almost always be controlled by the intravenous administration
of large doses (60 to 64 mg.) of menadione bisulfite (synthetic vitamin K). If bleeding
occurs as the result of excessive prothrombin deficiency, it can be controlled by
transfusions of freshly drawn citrated blood and intravenous administration of large
doses of menadione bisulfite.
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Article info
Publication history
Received:
October 4,
1944
Identification
Copyright
© 1945 Published by Elsevier Inc.