75 results
Differential Diagnosis for a Prolonged PT and aPTT
If the PT and the aPTT are both prolonged,
Differential Diagnosis ... Pre-analytical cause (e.g ... inhibitory drugs (e.g ... specific inhibitor (e.g ... hematology #coagulation
Mesenteric Ischemia - Differential Diagnostic Schema
Chronic: ASCVD, Venous, Vasculitides 5% (PAN, [E]GPA, IgA, MPA)
Acute
 - Venous
- Differential ... Diagnostic Schema ... inflammation (e.g ... hypovolemia), Meds/Treatments ... #Schema #Differential
Causes of Abnormal PT and/or aPTT
Prolonged Prothrombin Time (PT)
1. Acquired deficiency of FVII
to one factor e.g ... inhibitory drugs e.g ... Prolonged #Causes #diagnosis ... #differential # ... hematology #coagulation
Mixing Study
 • Clotting tests can be abnormal due to either a clotting factor deficiency, or
factor activity (e.g ... clotting test (e.g ... PT and/or aPTT) ... #hematology #pathophysiology ... #hematology #laboratory
Causes of Splenomegaly - Differential Diagnosis Algorithm
Infectious
 • Bacterial
 • Viral (EBV)
 • Parasitic
 • Fungal
Congestive
Splenomegaly - Differential ... Diagnosis Algorithm ... • Thrombus (e.g ... Myeloproliferative disorders (eg ... #Causes #Hematology
Causes of Thrombocytopenia - Differential Diagnosis Algorithm
 
Decreased Megakaryopoiesis
 • Aplastic Anemia
 • Toxic Damage (e.g.
Diagnosis Algorithm ... Toxic Damage (e.g ... Displacement (e.g ... Foreign Surface (e.g ... #Causes #Hematology
Von Willebrand Disease - Most common inherited bleeding disorder 
Clinical 
 • Easy bruising 
 •
bleeding disorder Clinical ... INR • Normal aPTT ... factor VIII) Treatment ... VonWillebrand #Disease #Diagnosis ... #Hematology
Hemophilia - Diagnosis and Management
Diagnosis:
 • Consistent bleeding history (unless screening for disease in family members
established disease) • aPTT ... mixing study (aPTT ... hemophilia type (e.g ... #Management #treatment ... #hematology
Acquired von Willebrand Syndrome - Diagnosis and Management
 • Autoantibodies to vWF: Lymphoproliferative disorders (e.g. lymphoma,
Willebrand Syndrome - Diagnosis ... Lymphoproliferative disorders (e.g ... Myeloproliferative disorders (e.g ... #Management #treatment ... #hematology #differential
Approach to the Hypercoagulable State
Arterial thromboembolism
→ Cardiac rhythm monitoring, Echocardiogram, Vascular imaging
→ Test for APS, particularly
• Provoked (e.g ... screening, CBC, aPTT ... Hypercoagulable #Workup #hematology ... #diagnosis #algorithm ... #hematology #VTE