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diagnosis hematology coagulation anticoagulation ptt abnormal causes differential doac laboratory prolonged testing thrombin warfarin apaxiban apixaban bleeding bruising cascade clot
How to Evaluate an Abnormal APTT Step 1: Is the PT or APTT Artifactually Prolonged? Step 2: Is
Step 1: Is the PT ... Patient Receiving Anticoagulants ... K Antagonists, Heparin ... , or Direct Thrombin ... Prolonging the PT
Coagulation cascade and anticoagulants Satyendra Dhar MD, @DharSaty #coagulation #coumadin #heparin #warfarin #apaxiban #pradaxa #xarelto #DOAC #vWF
Coagulation cascade and anticoagulants ... coagulation #coumadin #heparin ... xarelto #DOAC #vWF #thrombin ... #ptt #pt
Effect of Anticoagulants on Coagulation Tests PT / INR, aPTT, Anti-Xa Activity, Activated Clotting Time, Thrombin Time,
Effect of Anticoagulants ... Coagulation Tests PT ... / INR, aPTT, Anti-Xa ... Clotting Time, Thrombin ... EricsMedicalLectures/ #Anticoagulants
Causes of Abnormal PT and/or aPTT Prolonged Prothrombin Time (PT) 1. Acquired deficiency of FVII
unfractionated heparin ... - Other anticoagulants ... cause e.g. heparin ... drugs e.g. direct thrombin ... inhibitors, heparin
Bleeding and Bruising - Disorders of Hemostasis - Differential Diagnosis Framework == Quantitative or Qualitative defect in
inhibitor and lupus anticoagulant ... Acquired: • Heparin ... syndrome • Lupus anticoagulant ... deficiency • Anticoagulants ... deficiency • Anticoagulant
The coagulation cascade is shown, separated into different phases with their endogenous and pharmacological inhibitors shown.
at the site of injury ... Thrombin, then primes ... #clot #PT #PTT ... anticoagulation #anticoagulant ... Rivaroxaban #Edoxaban #heparin
Disseminated Intravascular Coagulation (DIC) Overview Increased Clotting and Consumption of Clotting Factors Findings: • Bleeding • Recent history
• Prolonged PT ... • Increased thrombin ... Fibrinogen: ↓ • PT ... Reduction of pro/anticoagulants ... INR < 2.3 - APTT
Effect of Direct Oral Anticoagulants on Hemostatic Tests Horizontal bars correspond to the approximate range of detectability
of Direct Oral Anticoagulants ... within and above typical ... assay; ECT = ecarin ... clotting time; TT = thrombin ... laboratory #testing #aptt
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