3 results
TTP - Laboratory Evaluation for Thrombotic Thrombocytopenic Purpura

Activity of von Willebrand factor-cleaving protease activity - A
levels - Usually normal ... platelet number Direct ... Mild-to-moderate elevation ... WBC count and differential ... ThromboticThrombocytopenicPurpura #Diagnosis #Workup
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
/0.8)] - PaO2 Normal ... PiO2: Extreme Elevation ... • Diffusion Defect ... UnremarkableLab #AA ... Hypoxia #hypoxemia #differential
Acute Liver Injury - Differential Diagnosis Algorithm

Vascular Causes of Acute Liver Injury: 
 • Hepatic vein:
Liver Injury - Differential ... Diagnosis Algorithm ... Bilirubin - +/- elevation ... Half-life: 1 week • Direct ... of Liver Enzyme Elevation