14 results
How to Evaluate an Abnormal APTT
Step 1: Is the PT or APTT Artifactually Prolonged?
Step 2: Is
Artifactually Prolonged ... K Antagonists, Heparin ... to identify the cause ... of Prolonged APTT ... #hematology #evaluation
Causes of Prolonged PT (INR), Prolonged PTT
 • Prolonged PT (INR), Prolonged PTT
 • Prolonged PT
Causes of Prolonged ... PTTProlonged ... #PPT #PT #INR #Differential ... Diagnosis #Algorithm #Causes ... #Hematology #coagulation
Causes of Abnormal PT and/or aPTT
Prolonged Prothrombin Time (PT)
1. Acquired deficiency of FVII
Causes of Abnormal ... intravascular coagulation (DIC ... #Prolonged #Causes ... #diagnosis #differential ... #hematology #coagulation
Differential Diagnosis for a Prolonged PT and aPTT
If the PT and the aPTT are both prolonged,
Differential Diagnosis ... (e.g. heparin contamination ... intravascularcoagulation (DIC ... #Prolonged #Causes ... #hematology #coagulation
Disseminated Intravascular Coagulation (DIC) Overview

Increased Clotting and Consumption of Clotting Factors

Findings:
 • Bleeding
 • Recent history
Thrombocytopenia • Prolonged ... Treat primary cause ... INR < 2.3 - APTT ... Coagulation #diagnosis #causes ... treatment #management #hematology
Causes of Arterial and Venous Thrombosis - Differential Diagnosis Framework

STRUCTURAL:
 - PFO: paradoxical emboli
 - Popliteal
Causes of Arterial ... artery aneurysm: Causes ... neoplasms - PNH ... MAHA: TTP, HUS, DIC ... Diagnosis #clots #hematology
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Purpura - Differential ... deficiencies - PNH ... Cholesterol emboli • Septic ... Vasculopathy #Purpura #Differential ... #Diagnosis #hematology
Causes of Extravascular and Intravascular Hemolysis - Differential Diagnosis Algorithm
Extravascular - Spleen and RES-mediated hemolysis
 -
Causes of Extravascular ... Intravascular Hemolysis - Differential ... • PCH • PNH ... • MAHA (TTP, DIC ... #Hematology
Bleeding and Bruising - Disorders of Hemostasis - Differential Diagnosis Framework

== Quantitative or Qualitative defect in
of Hemostasis - Differential ... Acquired: • Heparin ... the PT remains prolonged ... discern these causes ... #Diagnosis #Hematology
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
Extravascular Causes ... intravascular coagulation (DIC ... hemoglobinuria (PNH ... #differential # ... diagnosis #hematology