8 results
Coagulation cascade and anticoagulants 

Satyendra Dhar MD, @DharSaty

#coagulation #coumadin #heparin #warfarin #apaxiban #pradaxa #xarelto #DOAC #vWF
Coagulation cascade ... @DharSaty #coagulation ... heparin #warfarin #apaxiban ... xarelto #DOAC #vWF #thrombin ... #ptt #pt
ISTH Scoring System for Disseminated Intravascular Coagulation (DIC)
Platelet count:
 • Expected: Low (or normal)
 • Elevation
Scoring System for Disseminated ... Intravascular Coagulation ... platelet aggregation PT ... using INR use PT ... vessels #DIC #Disseminated
Effect of Anticoagulants on Coagulation Tests
PT / INR, aPTT, Anti-Xa Activity, Activated Clotting Time, Thrombin Time,
Anticoagulants on Coagulation ... Tests PT / INR, ... Clotting Time, Thrombin ... Rivaroxaban Apixaban
The coagulation cascade is shown, separated into different phases with their endogenous and pharmacological inhibitors shown.
The coagulation ... and endothelial cells ... #Coagulation #Cascade ... #clot #PT #PTT ... #inhibitor #Apixaban
Causes of Abnormal PT and/or aPTT
Prolonged Prothrombin Time (PT)
1. Acquired deficiency of FVII
- Rivaroxaban, apixaban ... Congenital intrinsic coagulation ... drugs e.g. direct thrombin ... Disseminated intravascular ... coagulation (DIC
Disseminated Intravascular Coagulation (DIC) Overview

Increased Clotting and Consumption of Clotting Factors

Findings:
 • Bleeding
 • Recent history
Disseminated Intravascular ... • Prolonged PT ... • Increased thrombin ... Fibrinogen: ↓ • PT ... Schistocytes, helmet cells
Differential Diagnosis for a Prolonged PT and aPTT
If the PT and the aPTT are both prolonged,
for a Prolonged PT ... and aPTT If the PT ... drugs (e.g. direct thrombin ... hemorrhage • Disseminated ... differential #hematology #coagulation
Bleeding and Bruising - Disorders of Hemostasis - Differential Diagnosis Framework

== Quantitative or Qualitative defect in
inhibitor of a coagulation ... == NORMAL PT ... liver failure, disseminated ... intravascular coagulation ... warfarin, direct thrombin