23 results
Causes of Bleeding / Bruising - Differential Diagnosis Algorithm
Thrombocytopenia - Quantitative Defect
 • Decreased Production
 •
• Vasculitis Coagulation ... • Factor VIII Deficiency ... • Factor IX Deficiency ... • Vitamin K Deficiency ... Algorithm #Causes #Hematology
Coagulation Cascade and Anticoagulant Sites of Action

- Amy Chung, MD, MSc https://twitter.com/AmyChung

#AntiCoagulation #Cascade #Anticoagulants #Medications #Pharmacology
Coagulation Cascade ... #Pharmacology #Pathophysiology ... Mechanisms #DOAC #Hematology
Hemostasis Physiology

The blood's response to blood vessel injury can be viewed as four interrelated steps. 
Roman
numerals refer to coagulation ... #Hemostasis #Pathophysiology ... #Coagulation #Cascade ... #Hematology
Summary of Coagulation Deficiencies
Inherited:
 • Hemophilia A - Deficiency of Factor VIII
 • Hemophilia B -
Summary of Coagulation ... Hemophilia A - Deficiency ... EricsMedicalLectures/ #Coagulation ... comparison #diagnosis #hematology ... #deficiency
Causes of Abnormal PT and/or aPTT
Prolonged Prothrombin Time (PT)
1. Acquired deficiency of FVII
Acquired deficiency ... Congenital intrinsic coagulation ... intravascular coagulation ... #differential #hematology ... #coagulation
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
vascular disorders, coagulation ... Platelet defects • Coagulation ... Kasabach-Merritt syndrome Coagulation ... necrosis) • VIT K deficiency ... Differential #Diagnosis #hematology
Disseminated Intravascular Coagulation (DIC) Overview

Increased Clotting and Consumption of Clotting Factors

Findings:
 • Bleeding
 • Recent history
Intravascular Coagulation ... protein C and S Pathophysiology ... is simultaneous coagulation ... thrombopoietin deficiency ... treatment #management #hematology
Differential Diagnosis for a Prolonged PT and aPTT
If the PT and the aPTT are both prolonged,
single factor deficiency ... severe fibrinogen deficiency ... • Congenital deficiency ... #differential #hematology ... #coagulation
Central Retinal Artery Occlusion: Pathogenesis and clinical findings
 • Inflammatory Disease: (i.e. GCA, SLE, GPA) ->
Protein C & S deficiency ... , ATIII deficiency ... ) -> Increased coagulation ... • Hematologic ... Occlusion #CRAO #pathophysiology
Venous Thrombosis vs Arterial Thrombosis - Differential Diagnosis Framework

VENOUS THROMBOSIS

 • Acquired Risk Factors:
	- >48 hours
- Protein S deficiency ... - Protein C deficiency ... intravascular coagulation ... Venous #Arterial #pathophysiology ... #hematology #differential