27 results
How to Evaluate an Abnormal APTT
Step 1: Is the PT or APTT Artifactually Prolonged?
Step 2: Is
to Evaluate an Abnormal ... the PT or APTT ... Prolonging the PT ... to identify the cause ... #diagnosis #hematology
Causes of Prolonged PT (INR), Prolonged PTT
 • Prolonged PT (INR), Prolonged PTT
 • Prolonged PT
Causes of Prolonged ... PT (INR), Normal ... PTT, Normal PT ... , Normal PT (INR ... #Hematology #coagulation
Causes of Abnormal PT and/or aPTT
Prolonged Prothrombin Time (PT)
1. Acquired deficiency of FVII
Causes of Abnormal ... PT and/or aPTT ... Jcortesizaguirr #Abnormal ... #PT #aPTT #Prolonged ... #differential #hematology
Differential Diagnosis for a Prolonged PT and aPTT
If the PT and the aPTT are both prolonged,
for a Prolonged PT ... PT and the aPTT ... amyloidosis #Abnormal ... #PT #aPTT #Prolonged ... #differential #hematology
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) ... Study #diagnosis #hematology ... pathophysiology #hematology
Von Willebrand Disease - Most common inherited bleeding disorder 
Clinical 
 • Easy bruising 
 •
type 2B) • Normal ... PT/INR • Normal ... aPTT (prolonged ... factor VIII) Treatment ... Disease #Diagnosis #Hematology
Hemophilia - Diagnosis and Management
Diagnosis:
 • Consistent bleeding history (unless screening for disease in family members
mixing study (aPTT ... mild cases) • ... PT/INR & von Willebrand ... hemophilia type (e.g ... #hematology
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
Causes of Thrombocytopenia ... : INR/PT, aPTT(liver ... function test, ANA (e.g ... or if a primary hematologic ... #Workup #hematology
Disseminated Intravascular Coagulation (DIC) Overview

Increased Clotting and Consumption of Clotting Factors

Findings:
 • Bleeding
 • Recent history
• Prolonged PT ... Fibrinogen: ↓ • PT ... Treat primary cause ... #treatment #management ... #hematology
Causes of Anemia with Normal Mean Corpuscular Volume (MCV) - Differential Diagnosis Algorithm
Decreased WBCs
 - Decreased/NormaI
Causes of Anemia ... • Secondary (e.g ... Anemias (MAHA) - Abnormal ... Diagnosis #Algorithm #Causes ... #Hematology