17 results
How to Evaluate an Abnormal APTT
Step 1: Is the PT or APTT Artifactually Prolonged?
Step 2: Is
: Is the PT or APTT ... Anticoagulants (Vitamin ... to identify the cause ... #prolonged #diagnosis ... #hematology #evaluation
Differential Diagnosis for a Prolonged PT and aPTT
If the PT and the aPTT are both prolonged,
Differential Diagnosis ... ) • Severe vitamin ... intravascularcoagulation (DIC ... #diagnosis #differential ... #hematology #coagulation
Prothrombin Time (PT) and Partial Thromboplastin Time (PTT)

Prothrombin Time (PT) - Often Elevated in:
 • Vitamin
Thromboplastin Time (PTT ... Elevated in: • Vitamin ... elevated in: • DIC ... Thromboplastin #laboratory #hematology ... #diagnosis
Causes of Abnormal PT and/or aPTT
Prolonged Prothrombin Time (PT)
1. Acquired deficiency of FVII
Early vitamin K ... Severe vitamin K ... intravascular coagulation (DIC ... #diagnosis #differential ... #hematology #coagulation
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
- Differential Diagnosis ... Corticosteroids - Vitamin ... #Differential #Diagnosis ... #hematology #rheumatology ... #nonpalpable #dermatology
Disseminated Intravascular Coagulation (DIC) Overview

Increased Clotting and Consumption of Clotting Factors

Findings:
 • Bleeding
 • Recent history
Treat primary cause ... INR < 2.3 - APTT ... #Coagulation #diagnosis ... #causes #treatment ... #management #hematology
Summary of Coagulation Deficiencies
Inherited:
 • Hemophilia A - Deficiency of Factor VIII
 • Hemophilia B -
Acquired: • Vitamin ... Post-partum • Acute DIC ... Deficiencies #Summary #table ... #comparison #diagnosis ... #hematology #deficiency
Thrombocytopenia and Pregnancy
Three syndromes in the critically ill pregnant woman who presents with coagulation defects.
1) HELLP
schistocytes, DIC ... child * Severe cases ... Obstetrics #OBGyn #Hematology ... #Diagnosis #Comparison ... #Table
Thrombocytopenia and Pregnancy - TTP/HUS, HELLP Syndrome and Acute Fatty Liver of Pregnancy (AFLP)
Three syndromes in
schistocytes, DIC ... child * Severe cases ... AFLP #obstetrics #hematology ... #diagnosis #table ... #comparison
Bleeding and Bruising - Disorders of Hemostasis - Differential Diagnosis Framework

== Quantitative or Qualitative defect in
- Differential Diagnosis ... Warfarin • Acute DIC ... discern these causes ... disease • Acute DIC ... #Hematology