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J Infect. 1988 Mar;16(2):153-61.

Disturbances of blood coagulation associated with Salmonella typhi infections.

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  • 1Department of Medicine, University of the Witwatersrand, Johannesburg, South Africa.


Disturbances of blood coagulation were studied in 32 consecutive patients with typhoid fever on their admission to hospital. Estimations of prothrombin time, activated partial thromboplastin time, fibrinogen, fibrin degradation products (FDPs), factors VII, VIII and XII, alpha I antitrypsin, plasminogen, CI esterase inhibitor, and platelet counts were performed as well as liver function tests and blood counts. Five patients had laboratory evidence of disseminated intravascular coagulation (DIC) and two had a generalised bleeding disorder which in the other three was inapparent. The platelet count in the group as a whole was low (P less than 0.05) and the FDPs in most cases were mildly elevated. The pre-kallikrein values were depressed in three of the five with DIC, whereas factor XII was not reduced. These results indicate that bleeding disorders in typhoid fever are uncommon. The depression of pre-kallikrein indicates that the DIC is probably triggered by activation of the intrinsic coagulation pathway. Most patients had lymphopenia and monocytopenia but only two had neutropenia.

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