4 results
Causes of Abnormal PT and/or aPTT
Prolonged Prothrombin Time (PT)
1. Acquired deficiency of FVII
Congenital intrinsic coagulation ... drugs e.g. direct thrombin ... Disseminated intravascular ... coagulation (DIC ... differential #hematology #coagulation
Disseminated Intravascular Coagulation (DIC) Overview

Increased Clotting and Consumption of Clotting Factors

Findings:
 • Bleeding
 • Recent history
Disseminated Intravascular ... Coagulation (DIC ... Thrombocytopenia • Prolonged ... PT/PTT • Low ... • Increased thrombin
Differential Diagnosis for a Prolonged PT and aPTT
If the PT and the aPTT are both prolonged,
PT and aPTT If ... drugs (e.g. direct thrombin ... hemorrhage • Disseminated ... intravascularcoagulation (DIC ... differential #hematology #coagulation
Bleeding and Bruising - Disorders of Hemostasis - Differential Diagnosis Framework

== Quantitative or Qualitative defect in
inhibitor of a coagulation ... prolonged after ... liver failure, disseminated ... disease • Acute DIC ... warfarin, direct thrombin