14 results
Causes of Arterial and Venous Thrombosis - Differential Diagnosis Framework

STRUCTURAL:
 - PFO: paradoxical emboli
 - Popliteal
Causes of Arterial ... artery aneurysm: Causes ... intravascular coagulation ... neoplasms - PNH ... Diagnosis #clots #hematology
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
vascular disorders, coagulation ... deficiencies - PNH ... Cholesterol emboli • Septic ... Differential #Diagnosis #hematology ... #nonpalpable #dermatology
Disseminated Intravascular Coagulation (DIC) Overview

Increased Clotting and Consumption of Clotting Factors

Findings:
 • Bleeding
 • Recent history
dysfunction (25%) • Hepatic ... Treat primary cause ... 100mg/dL) - Heparin ... #diagnosis #causes ... treatment #management #hematology
Venous Thrombosis vs Arterial Thrombosis - Differential Diagnosis Framework

VENOUS THROMBOSIS

 • Acquired Risk Factors:
	- >48 hours
Hyperhomocysteinemia - Heparin-induced ... intravascular coagulation ... and other causes ... Vasculitis • Injury ... pathophysiology #hematology
The coagulation cascade is shown, separated into different phases with their endogenous and pharmacological inhibitors shown.
The coagulation ... at the site of injury ... #Coagulation #Cascade ... diagnosis #models #hematology ... Rivaroxaban #Edoxaban #heparin
Differential Diagnosis for a Prolonged PT and aPTT
If the PT and the aPTT are both prolonged,
Causes include : ... (e.g. heparin contamination ... thrombin inhibitors, heparin ... #differential #hematology ... #coagulation
Causes of Abnormal PT and/or aPTT
Prolonged Prothrombin Time (PT)
1. Acquired deficiency of FVII
Causes of Abnormal ... unfractionated heparin ... e.g. heparin ... #differential #hematology ... #coagulation
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
Extravascular Causes ... intravascular coagulation ... hemoglobinuria (PNH ... Extravascular #Causes ... differential #diagnosis #hematology
Review of the Coagulation Cascade
Traditional Model:
 • Parallel extrinsic and intrinsic pathways.
Contemporary Model:
 • 4 key
Review of the Coagulation ... Initiation phase caused ... due to vascular injury ... , resulting in coagulation ... diagnosis #models #hematology
Leukemias Overview: ALL, CML, AML, APML, CLL

Acute leukemias > 20% blasts in the peripheral blood smear
involvement • 30%: CNS ... -> AML: Blast crises ... count ↑ PLT • ↑ PBS ... #Leukemia #Hematology ... #Oncology #Diagnosis