13 results
Algorithm for Investigation of Abnormal Coagulation Tests
- Prolonged PT
- Prolonged aPTT and Prolonged PT
- Prolonged aPTT

Dr.
Algorithm for Investigation ... of Abnormal Coagulation ... DrEricStrong #Algorithm ... #Coagulation #Abnormal ... #Hematology #Diagnosis
Causes of Prolonged PT (INR), Prolonged PTT
 • Prolonged PT (INR), Prolonged PTT
 • Prolonged PT
Prolonged PT (INR), Normal ... PTT, Normal PT ... , Normal PT (INR ... #Causes #Hematology ... #coagulation #disorders
Prolonged APTT - Diagnostic Algorithm

#Prolonged #APTT #PTT #abnormal #Diagnosis #Algorithm #hematology
Prolonged APTT - ... Diagnostic Algorithm ... #PTT #abnormal ... #Diagnosis #Algorithm ... #hematology
ISTH Scoring System for Disseminated Intravascular Coagulation (DIC)
Platelet count:
 • Expected: Low (or normal)
 • Elevation
Expected: Low (or normal ... aggregation PT, aPTT ... factors, Can be normal ... Expected: Low (or normal ... clots, Can be normal
Causes of Abnormal PT and/or aPTT
Prolonged Prothrombin Time (PT)
1. Acquired deficiency of FVII
Causes of Abnormal ... intravascular coagulation ... Jcortesizaguirr #Abnormal ... #differential #hematology ... #coagulation
Approach to Thrombotic Microangiopathy (TMA) - Differential Diagnosis and Management Algorithm

Suspected TMA: Unexplained thrombocytopenia + MAHA
and Management Algorithm ... antiglobulin test, PT/aPTT ... hemosiderin • PT/aPTT ... normal • DAT ... #hematology
Disseminated Intravascular Coagulation (DIC) Overview

Increased Clotting and Consumption of Clotting Factors

Findings:
 • Bleeding
 • Recent history
• Prolonged PT/PTT ... Thrombocytopenia - Normal ... INR < 2.3 - APTT ... < 1.5 x normal ... treatment #management #hematology
Bleeding and Bruising - Disorders of Hemostasis - Differential Diagnosis Framework

== Quantitative or Qualitative defect in
factor == NORMAL ... PT/NORMAL PTT: ... PT/ABNORMAL PTT ... PT/NORMAL PTT: ... PT/ABNORMAL PTT
Causes of Bleeding / Bruising - Differential Diagnosis Algorithm
Thrombocytopenia - Quantitative Defect
 • Decreased Production
 •
Differential Diagnosis Algorithm ... Destruction • Abnormal ... • Vasculitis Coagulation ... Differential #Diagnosis #Algorithm ... #Causes #Hematology
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 ... #differential #hematology ... #coagulation