21 results
How to Evaluate an Abnormal APTT
Step 1: Is the PT or APTT Artifactually Prolonged?
Step 2: Is
to identify the cause ... of Prolonged APTT ... ISN Education ... #prolonged #diagnosis ... #hematology #evaluation
Pancytopenia - Differential Diagnosis Algorithm
 • 12-13 g/dL,
 • ANC < 1800/uL,
 • platelet < 150,000/uL

Initial
- Differential Diagnosis ... /uL Initial Workup ... iron studies, PT/aPTT ... #Algorithm #hematology ... #workup
Hemolysis - Diagnostic Algorithm and Causes

Increased red cell production: 
 • Increased Reticulocytosis/polychromasia 
 • Erythroid
Hemolysis - Diagnostic ... Algorithm and Causes ... Increased red cell production ... #Workup #Hematology ... #Diagnosis *
Approach to Thrombocytosis - Elevated Platelet Count - Differential Diagnosis Algorithm

Peripheral Smear concerning for malignancy?
→ Refer to hematology ... for workup, including ... Rebound effect from treatment ... Inflammatory Conditions: Rheumatologic ... #Algorithm #hematology
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
- Differential Diagnosis ... and Workup History ... : INR/PT, aPTT(liver ... #Causes #Workup ... #hematology
Differential Diagnosis for a Prolonged PT and aPTT
If the PT and the aPTT are both prolonged,
Differential Diagnosis ... the PT and the aPTT ... synthesis (impaired production ... #diagnosis #differential ... #hematology #coagulation
Eosinophil Disorders Testing Algorithm
INDICATIONS FOR TESTING:
 • Peripheral blood eosinophilia/hypereosinophilia uncovered incidentally during medical evaluation or
evaluation or workup ... allergy, drug reaction ... glucocorticoid treatment ... #Differential #diagnosis ... #hematology #eosinophilia
Causes of Abnormal PT and/or aPTT
Prolonged Prothrombin Time (PT)
1. Acquired deficiency of FVII
Causes of Abnormal ... Pre-analytical cause ... synthesis - Impaired production ... #diagnosis #differential ... #hematology #coagulation
Disseminated Intravascular Coagulation (DIC) Overview

Increased Clotting and Consumption of Clotting Factors

Findings:
 • Bleeding
 • Recent history
coagulation factors - Reduction ... INR < 2.3 - APTT ... #Coagulation #diagnosis ... #causes #treatment ... #management #hematology
Hemophilia - Diagnosis and Management
Diagnosis:
 • Consistent bleeding history (unless screening for disease in family members
established disease) • aPTT ... mixing study (aPTT ... normal in mild cases ... #Management #treatment ... #hematology