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    PTT increased

    PTT increased is a topic covered in the Diagnosaurus.

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    Etiology

    Congenital factor deficiencies

    • Contact factors (no clinical bleeding)
    • Factor XII (no clinical bleeding)
    • Factor XI
    • Factor IX (hemophilia B)
    • Factor VIII (hemophilia A)
    • Factor VIII (von Willebrand's disease)
    • Factor I (afibrinogenemia)

    Anticoagulants

    • Factor VIII inhibitor (postpartum, idiopathic, or after factor VIII infusions)
    • Lupus anticoagulant (no clinical bleeding)
    • Heparin
    • Warfarin (PT increased more than PTT)

    Other

    • Disseminated intravascular coagulation (PT & PTT increased)
    • Liver disease (PT increased more than PTT)
    • Vitamin K deficiency (PT increased more than PTT)

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    Last updated: December 1, 2014

    Citation

    Zeiger, Roni F.. "PTT Increased." Diagnosaurus, 4th ed., McGraw-Hill Education, 2014. Medicine Central, im.unboundmedicine.com/medicine/view/Diagnosaurus/114681/all/PTT_increased.
    Zeiger RF. PTT increased. Diagnosaurus. 4th ed. McGraw-Hill Education; 2014. https://im.unboundmedicine.com/medicine/view/Diagnosaurus/114681/all/PTT_increased. Accessed March 22, 2019.
    Zeiger, R. F. (2014). PTT increased. In Diagnosaurus. Available from https://im.unboundmedicine.com/medicine/view/Diagnosaurus/114681/all/PTT_increased
    Zeiger RF. PTT Increased [Internet]. In: Diagnosaurus. McGraw-Hill Education; 2014. [cited 2019 March 22]. Available from: https://im.unboundmedicine.com/medicine/view/Diagnosaurus/114681/all/PTT_increased.
    * Article titles in AMA citation format should be in sentence-case
    TY - ELEC T1 - PTT increased ID - 114681 A1 - Zeiger,Roni F, Y1 - 2014/12/01/ BT - Diagnosaurus UR - https://im.unboundmedicine.com/medicine/view/Diagnosaurus/114681/all/PTT_increased PB - McGraw-Hill Education ET - 4 DB - Medicine Central DP - Unbound Medicine ER -