41 results
Causes of Prolonged PT (INR), Prolonged PTT
 • Prolonged PT (INR), Prolonged PTT
 • Prolonged PT
Causes of Prolonged ... PTT • Prolonged ... PTT, Normal PT ... (INR) - Bleeding ... ) - No Bleeding
How to Evaluate an Abnormal APTT
Step 1: Is the PT or APTT Artifactually Prolonged?
Step 2: Is
to Evaluate an Abnormal ... APTT Step 1: Is ... or APTT? ... to identify the cause ... mixing #studies #PTT
Disseminated Intravascular Coagulation (DIC) Overview

Increased Clotting and Consumption of Clotting Factors

Findings:
 • Bleeding
 • Recent history
/PTT • Low plasma ... /INR: ↑ • PTT: ... Treat primary cause ... INR < 2.3 - APTT ... #treatment #management
Bleeding and Bruising - Disorders of Hemostasis - Differential Diagnosis Framework

== Quantitative or Qualitative defect in
PT/NORMAL PTT: ... PT/ABNORMAL PTT ... Perform a PTT mixing ... /NORMAL PTT: Suggests ... PT/ABNORMAL PTT
Causes of Abnormal PT and/or aPTT
Prolonged Prothrombin Time (PT)
1. Acquired deficiency of FVII
Causes of Abnormal ... PT and/or aPTT ... typically prolong aPTT ... and aPTT 1. ... #PT #aPTT #Prolonged
Von Willebrand Disease - Most common inherited bleeding disorder 
Clinical 
 • Easy bruising 
 •
common inherited bleeding ... bruising • Skin bleeding ... • Prolonged bleeding ... PT/INR • Normal ... aPTT (prolonged
Hemophilia - Diagnosis and Management
Diagnosis:
 • Consistent bleeding history (unless screening for disease in family members
Diagnosis and Management ... established disease) • aPTT ... mixing study (aPTT ... may be normal in ... mild cases) •
Differential Diagnosis for a Prolonged PT and aPTT
If the PT and the aPTT are both prolonged,
and aPTT If the ... PT and the aPTT ... Causes include : ... amyloidosis #Abnormal ... #PT #aPTT #Prolonged
Approach to Thrombotic Microangiopathy (TMA) - Differential Diagnosis and Management Algorithm

Suspected TMA: Unexplained thrombocytopenia + MAHA
Diagnosis and Management ... /aPTT MAHA likely ... hemosiderin • PT ... /aPTT normal • ... Differential #Diagnosis #Management
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
- History of bleeding ... epistaxis, gingival bleeding ... practices that could cause ... : INR/PT, aPTT(liver ... patients if the cause