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

Dr.
Abnormal Coagulation Tests ... Abnormal #APTT #Laboratory ... #Hematology #Diagnosis ... #Workup
Laboratory Testing in Hemolytic Anemia

Intravascular vs Extravascular Hemolysis
Reticulocytes
Unconjugated bilirubin
LDH
Peripheral smear
Haptoglobin
Urine hemosiderin
Urine hemoglobin
Carboxyhemoglobin

#Hemolytic #Anemia #Laboratory #Testing #workup
Laboratory Testing ... Hemolytic #Anemia #Laboratory ... #Testing #workup ... #diagnosis #hematology
Bayesian combination of 4T score with Heparin PF4 antibody titer to obtain the post-test probability of
obtain the post-test ... PF4Antibody #Bayesian #Diagnosis ... #Hematology #HITT ... Thrombocytopenia #Laboratory
Mixing Study
 • Clotting tests can be abnormal due to either a clotting factor deficiency, or
Study • Clotting tests ... • Clotting tests ... Mixing #Study #diagnosis ... #hematology #pathophysiology ... #hematology #laboratory
Hemolysis - Diagnostic Algorithm and Causes

Increased red cell production: 
 • Increased Reticulocytosis/polychromasia 
 • Erythroid
Hemolysis - Diagnostic ... Differential #Causes #Workup ... #Hematology #Diagnosis ... GrepMed Recommended Text
Approach to the Hypercoagulable State
Arterial thromboembolism
→ Cardiac rhythm monitoring, Echocardiogram, Vascular imaging
→ Test for APS, particularly
Vascular imaging → Test ... - No other workup ... Hypercoagulable #Workup ... #hematology #diagnosis ... #algorithm #hematology
Prothrombin Time (PT) and Partial Thromboplastin Time (PTT)

Prothrombin Time (PT) - Often Elevated in:
 • Vitamin
• Underfilled test ... Thromboplastin #laboratory ... #hematology #diagnosis
WHAT test - Wrist Hyperflexion and Abduction of the Thumb 

The wrist is hyperflexed and the
WHAT test - Wrist ... Thumb The wrist ... PhysicalExam #clinical #video ... #sports #msk #orthopedics ... #rheumatology
Eichhoff's Test in de Quervain's Tenosynovitis

1) Patient makes a fist with fingers wrapped around the thumb
2)
ulnar deviates the wrist ... Tenosynovitis #clinical #video ... #sports #msk #orthopedics ... #rheumatology # ... wrist
Hemolysis - Differential Diagnosis Framework

1) Environment
  - Fragmentation
  - MAHA: TTP, HUS, DIC, HELLP
- Differential Diagnosis ... Hypophostphatemia Laboratory ... Tests: - Haptoglobin ... #Differential #Diagnosis ... #hematology