17 results
Bleeding and Bruising - Disorders of Hemostasis - Differential Diagnosis Framework

== Quantitative or Qualitative defect in
PT/NORMAL PTT: ... PT/ABNORMAL PTT ... ) ABNORMAL PT ... PT/ABNORMAL PTT ... warfarin, direct thrombin
How to Evaluate an Abnormal APTT
Step 1: Is the PT or APTT Artifactually Prolonged?
Step 2: Is
to Evaluate an Abnormal ... Step 1: Is the PT ... Patient Receiving Anticoagulants ... Heparin, or Direct Thrombin ... Prolonging the PT
The coagulation cascade is shown, separated into different phases with their endogenous and pharmacological inhibitors shown.
at the site of injury ... FVa to generate thrombin ... Thrombin, then primes ... #clot #PT #PTT ... anticoagulation #anticoagulant
Disseminated Intravascular Coagulation (DIC) Overview

Increased Clotting and Consumption of Clotting Factors

Findings:
 • Bleeding
 • Recent history
• Prolonged PT ... • Increased thrombin ... Fibrinogen: ↓ • PT ... Reduction of pro/anticoagulants ... - APTT < 1.5 x normal
This 24M presented with acute onset CP/SOB, hypoxia, HR 150s. What's the diagnosis? Treatment options? Hint:
Thrombus in transit ... Pt had extensive ... 3 d later with normal ... Echocardiogram #A4C ... PulmonaryEmbolism #Thrombus
Causes of Abnormal PT and/or aPTT
Prolonged Prothrombin Time (PT)
1. Acquired deficiency of FVII
Causes of Abnormal ... PT and/or aPTT ... heparin - Other anticoagulants ... drugs e.g. direct thrombin ... Jcortesizaguirr #Abnormal
Liver Chemistries - Interpretation of LFTs

R-value: Serum (ALT/ULN ALT) / (Alk phos/ULN ALP)
 • R >
AST/ALT > ALP: Typical ... ALP > AST/ALT: typical ... - If both are normal ... Coagulation factors: PT ... RBC (hemolysis, bleeding
Acute Liver Injury - Differential Diagnosis Algorithm

Vascular Causes of Acute Liver Injury: 
 • Hepatic vein:
AST/ALT > ALP: Typical ... ALP > AST/ALT: typical ... - If both are normal ... function may be abnormal ... RBC (hemolysis, bleeding
Bleeding manifestations 
Petechiae are small, flat, red, discrete areas of skin bleeding that are typically <2
Bleeding manifestations ... areas of skin bleeding ... ) are typical of ... levels tend to be normal ... , PT should be normal
Cool echo - RV strain, McConnell sign, and CLOT IN TRANSIT!! BP is normal and pt
BP is normal and ... pt not in distress ... Echocardiogram #A4C ... Pulmonary #Embolism #Thrombus