1104 results
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 ... the PT or APTT ... ISNeducation #Abnormal ... #APTT #prolonged
Algorithm for Investigation of Abnormal Coagulation Tests
- Prolonged PT
- Prolonged aPTT and Prolonged PT
- Prolonged aPTT

Dr.
Investigation of Abnormal ... PT - Prolonged aPTT ... PT - Prolonged aPTT ... #Coagulation #Abnormal ... #APTT #Laboratory
Prolonged APTT - Diagnostic Algorithm

#Prolonged #APTT #PTT #abnormal #Diagnosis #Algorithm #hematology
Prolonged APTT - ... #Prolonged #APTT ... #PTT #abnormal
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 ... may prolong the aPTT ... Jcortesizaguirr #Abnormal
Differential Diagnosis for a Prolonged PT and aPTT
If the PT and the aPTT are both prolonged,
Prolonged PT and aPTT ... the PT and the aPTT ... amyloidosis #Abnormal ... #PT #aPTT #Prolonged
Mixing Study
 • Clotting tests can be abnormal due to either a clotting factor deficiency, or
Clotting tests can be abnormal ... an inhibitor of normal ... to have 50% of normal ... Plasma → Recheck abnormal ... PT and/or aPTT)
Approach to Elevated aPTT / PT - Differential Diagnosis Algorithm

aPTT: Intrinsic / Final
PT: Extrinsic / Final

By
Approach to Elevated aPTT ... Diagnosis Algorithm aPTT ... #Elevated #aPTT
Causes of Prolonged PT (INR), Prolonged PTT
 • Prolonged PT (INR), Prolonged PTT
 • Prolonged PT
INR), Prolonged PTT ... INR), Prolonged PTT ... Prolonged PT (INR), Normal ... PTT, Normal PT ... , Normal PT (INR
Approach to Thrombotic Microangiopathy (TMA) - Differential Diagnosis and Management Algorithm

Suspected TMA: Unexplained thrombocytopenia + MAHA
antiglobulin test, PT/aPTT ... hemosiderin • PT/aPTT ... normal • DAT
Bleeding and Bruising - Disorders of Hemostasis - Differential Diagnosis Framework

== Quantitative or Qualitative defect in
PT/NORMAL PTT: ... PT/ABNORMAL PTT ... PT/NORMAL PTT: ... • Acute DIC ABNORMAL ... PT/ABNORMAL PTT