8 results
How to Evaluate an Abnormal APTT
Step 1: Is the PT or APTT Artifactually Prolonged?
Step 2: Is
Step 1: Is the PT ... Prolonging the PT ... to identify the cause ... #prolonged #diagnosis ... #hematology #evaluation
Mixing Study
 • Clotting tests can be abnormal due to either a clotting factor deficiency, or
Mixing Study • ... PT and/or aPTT) ... #Study #diagnosis ... #hematology #pathophysiology ... #hematology #laboratory
Differential Diagnosis for a Prolonged PT and aPTT
If the PT and the aPTT are both prolonged,
Differential Diagnosis ... for a Prolonged PT ... PT and the aPTT ... #Causes #diagnosis ... #differential #hematology
Causes of Abnormal PT and/or aPTT
Prolonged Prothrombin Time (PT)
1. Acquired deficiency of FVII
Causes of Abnormal ... PT and/or aPTT ... Pre-analytical cause ... #Causes #diagnosis ... #differential #hematology
Hemophilia - Diagnosis and Management
Diagnosis:
 • Consistent bleeding history (unless screening for disease in family members
corrects with a mixing ... study (aPTT may ... normal in mild cases ... ) • PT/INR & von ... Management #treatment #hematology
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
- Differential Diagnosis ... : INR/PT, aPTT(liver ... function test, ANA (e.g ... #Differential #Diagnosis ... #hematology
Bleeding and Bruising - Disorders of Hemostasis - Differential Diagnosis Framework

== Quantitative or Qualitative defect in
Bleeding and Bruising ... - Differential Diagnosis ... Perform a PTT mixing ... discern these causes ... #Hematology
Macrophage Activation Syndrome (MAS)
Classified among the secondary or acquired forms of haemophagocytic lymphohistiocytosis (sHLH)

What?
A subset of
manifestations: from easy bruising ... Hypofibrinogenemia • ↑ PT ... ↑ PTT • ↑ Fibrin ... Activation #Syndrome #Diagnosis ... #Management #Hematology