The patient was prescribed Vicasol (Menadione) several days before the elective surgery for peptic ulcer disease of the stomach. What is the mechanism of action of this drug?

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Answer

Decreases vascular permeability

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Increases blood coagulability via intensified prothrombin synthesis

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Suppresses fibrinolysis

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Binds free calcium ions, removing calcium from coagulation reaction

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Suppresses platelet aggregation

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The patient was prescribed Vicasol (Menadione) several days before the elective ...

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