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    CHARACTERISING FACTORS PREDICTIVE OF INFECTION IN SEVERELY INJURED PATIENTS 
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    CHARACTERISING FACTORS PREDICTIVE OF INFECTION IN SEVERELY INJURED PATIENTS

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    Cole, Elaine 020215.pdf (1.226Mb)
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    Queen Mary University of London
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    Abstract
    Infection after trauma complicates the patients clinical course. Infection leads to longer critical care and hospital stays, has been associated with increased mortality rates and places considerable cost pressures on health economies. The predictors of infection after severe injury are not known, and the effects on outcomes other than mortality are under-reported. The overall objective of this research was to characterise factors predictive of infection in severely injured patients admitted to critical care. A prospective cohort study of 271 patients investigated admission factors predictive of the development of infection. A second study of 280 patients evaluated post-injury immune cell changes and the association with infection. Thirdly the relationship between early coagulopathy and infections was investigated in 158 patients. Finally a study of 385 patients examined the use of Tranexamic Acid (TXA) and its association with infection and other outcomes. Infection was a significant burden for severely injured patients. Admission hypoperfusion was the only early characteristic associated with the development of infection, and a dose dependent relationship was observed between severity of shock and increased percentage of infection (p<0.01). Lymphopenia prolonged to day four post injury was strongly predictive infection (OR 0.10, CI 0.02-0.48, p<0.01). At 24 hours, the anticoagulant Protein C was lower in those with infection (Infection: 70.2 iu/dL vs. No infection: 83.3 iu/dL p=0.02), and increased fibrinolysis was also associated with infectious complications (Infection: 6156 μg/L vs. No infection: 3324 μg/L p=0.03). There was a trend to a beneficial relationship between TXA and infection, and it was independently associated with reduced organ failure (OR 0.27, CI: 0.10 – 0.73, p=0.01) and mortality (OR 0.16 CI 0.03 - 0.86, p=0.03). In severely injured patients, admission shock, prolonged lymphopenia and early coagulation dysfunction post severe injury were independent predictors of infection. Timely modulation of these responses after trauma may help to reduce the burden of infection.
    Authors
    Cole, Elaine
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    http://qmro.qmul.ac.uk/xmlui/handle/123456789/7975
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    • Theses [3705]
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    The copyright of this thesis rests with the author and no quotation from it or information derived from it may be published without the prior written consent of the author
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