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Heparin-Induced Thrombocytopenia (HIT) Evaluation Algorithm

- Dr. Josh Farkas @PulmCrit

#4TScore #HITT #Algorithm #HeparinInduced #Thrombocytopenia #Diagnosis #Criteria #Hematology
Heparin-Induced Thrombocytopenia ... (HIT) Evaluation ... PulmCrit #4TScore #HITT ... HeparinInduced #Thrombocytopenia
Heparin Induced Thrombocytopenia (HIT) - Likelihood, Diagnosis and Management
 - HIT Suspected
 - Calculate 4T Score
Heparin Induced Thrombocytopenia ... (HIT) - Likelihood ... Management - HIT ... PF4 Results #HIT ... Heparin #Induced #Thrombocytopenia
Approach to suspected Heparin-Induced Thrombocytopenia (HIT)

 • Suspected HIT Algorithm
 • "4 T's" clinical probability score:
Heparin-Induced Thrombocytopenia ... (HIT) • Suspected ... HIT Algorithm ... score: - Thrombocytopenia ... Heparin #Induced #Thrombocytopenia
Bayesian combination of 4T score with Heparin PF4 antibody titer to obtain the post-test probability of
probability of HIT ... Diagnosis #Hematology #HITT ... #Thrombocytopenia
Heparin Induced Thrombocytopenia (HIT) - 4T Score

The 4T score is useful to establish pre-test probability of
Heparin Induced Thrombocytopenia ... (HIT) - 4T Score ... probability of HIT ... #Diagnosis #HIT ... Heparin #Induced #Thrombocytopenia
4-T Score for the Likelihood of Heparin Induced Thrombocytopenia
 - Thrombocytopenia - Compare the highest platelet
count
Heparin Induced Thrombocytopenia ... - Thrombocytopenia ... probability (risk of HIT ... probability (risk of HIT ... ) #4TScore #HIT
Heparin Induced Thrombocytopenia (HIT) - Diagnosis and Management - GrepMed Handbook

Presentation: 
 • Plts ↓50% (nadir
Heparin Induced Thrombocytopenia ... (HIT) - Diagnosis ... consumption → thrombocytopenia ... emcrit.org/ibcc/thrombocytopenia ... #Induced #Thrombocytopenia
Our approach to the diagnosis and initial management of patients with suspected HIT. Our approach is
with suspected HIT ... the results of HIT ... probability of HIT ... Management #Hematology #HIT ... Heparin #Induced #Thrombocytopenia
Causes of Thrombocytopenia - Differential Diagnosis Algorithm
 
Decreased Megakaryopoiesis
 • Aplastic Anemia
 • Toxic Damage (e.g.
Causes of Thrombocytopenia ... Quinidine • HIT ... Heart Valve) #Thrombocytopenia
4T Score for Heparin-Induced Thrombocytopenia

Interpretation of the 4T score:
0-3 points:  Low probability (<<1%)
  -
Heparin-Induced Thrombocytopenia ... further workup of HITT ... agent #4TScore #HITT ... HeparinInduced #Thrombocytopenia