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diagnosis hematology differential abnormal aptt prolonged anticoagulant anticoagulation apixaban arterial bleeding bruising cascade clot dabigatran dic disseminated edoxaban embolism hemostasis
Disseminated Intravascular Coagulation (DIC) Overview Increased Clotting and Consumption of Clotting Factors Findings: • Bleeding • Recent history
• Prolonged PT ... protein C and S Pathophysiology ... Fibrinogen: ↓ • PT ... Treat primary cause ... #diagnosis #causes
Causes of Abnormal PT and/or aPTT Prolonged Prothrombin Time (PT) 1. Acquired deficiency of FVII
Causes of Abnormal ... unfractionated heparin ... e.g. heparin ... #differential #hematology ... #coagulation
Differential Diagnosis for a Prolonged PT and aPTT If the PT and the aPTT are both prolonged,
for a Prolonged PT ... (e.g. heparin contamination ... thrombin inhibitors, heparin ... #differential #hematology ... #coagulation
The coagulation cascade is shown, separated into different phases with their endogenous and pharmacological inhibitors shown.
The coagulation ... #Coagulation #Cascade ... thrombin #clot #PT ... #pathophysiology ... Rivaroxaban #Edoxaban #heparin
Venous Thrombosis vs Arterial Thrombosis - Differential Diagnosis Framework VENOUS THROMBOSIS • Acquired Risk Factors: - >48 hours
Hyperhomocysteinemia - Heparin-induced ... intravascular coagulation ... and other causes ... Venous #Arterial #pathophysiology ... #hematology #differential
Liver Chemistries - Interpretation of LFTs R-value: Serum (ALT/ULN ALT) / (Alk phos/ULN ALP) • R >
• Albumin • Coagulation ... factors: PT/INR ... replaced by non-hepatic ... Hemolysis #liver #chemistry ... #differential #Hepatology
Bleeding and Bruising - Disorders of Hemostasis - Differential Diagnosis Framework == Quantitative or Qualitative defect in
inhibitor of a coagulation ... Acquired: • Heparin ... intravascular coagulation ... discern these causes ... Differential #Diagnosis #Hematology
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