3710 results
The head impulse test (HIT) result is positive (abnormal) in nearly all patients with a peripheral
impulse test (HIT ... with a peripheral cause ... with a central cause ... It cannot therefore ... HeadImpulse #Testing #HIT
4-T Score for the Likelihood of Heparin Induced Thrombocytopenia
 - Thrombocytopenia - Compare the highest platelet
count
Other potential cause ... probability (risk of HIT ... probability (risk of HIT ... probability (risk of HIT ... ) #4TScore #HIT
Causes of Thrombocytopenia - Differential Diagnosis Algorithm
 
Decreased Megakaryopoiesis
 • Aplastic Anemia
 • Toxic Damage (e.g.
Causes of Thrombocytopenia ... Quinidine • HIT ... Diagnosis #Algorithm #Causes
Causes of Purpura - Differential Diagnosis
Non-PalpabIe → Palpable
 • Thrombocytopenia (HIT, ITP/HUS), Coagulation defects (DIC, warfarin
Causes of Purpura ... Thrombocytopenia (HIT ... nonpalpable #palpable #Causes
Causes of Arterial and Venous Thrombosis - Differential Diagnosis Framework

STRUCTURAL:
 - PFO: paradoxical emboli
 - Popliteal
Causes of Arterial ... artery aneurysm: Causes ... neoplasms - PNH - HIT
Causes of Thrombocytopenia - Differential Diagnosis Framework
Decreased Production:
 - Drugs (chemo, yang, sulfa, acetaminophen, NSAIDs, quinine,
Causes of Thrombocytopenia ... etc) - Viral: HIV ... Antibody-mediated: ITP, HITT
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
Causes of Petechial ... ITP - APLS - HIT ... Diagnosis #Algorithm #Causes
Venous Thrombosis vs Arterial Thrombosis - Differential Diagnosis Framework

VENOUS THROMBOSIS

 • Acquired Risk Factors:
	- >48 hours
Hematological: - HIT ... contraceptives - HRT ... considered in all cases ... coagulation and other causes
Disseminated Intravascular Coagulation (DIC) Overview

Increased Clotting and Consumption of Clotting Factors

Findings:
 • Bleeding
 • Recent history
deficiency) • HIT ... Treat primary cause ... Coagulation #diagnosis #causes
TRALI vs TACO - Transfusion Reactions
TRALI:
 • Epidemiology: 0.1% of transfused patientsl
 • Risk factors: Critical
Pathophysiology: 2 hit ... without other cause