10 results
Causes of Abnormal PT and/or aPTT
Prolonged Prothrombin Time (PT)
1. Acquired deficiency of FVII
Early liver disease ... unfractionated heparin ... Reduced liver synthesis ... Massive hemorrhage ... Causes #diagnosis #differential
Liver Disease in Pregnancy
Intrahepatic Cholestasis of Pregnancy (ICP)
 • Onset/Trimester: 25-32 weeks
 • Typical clinical features:
imaging: Hepatic ... extensive necrosis and hemorrhage ... often <5 mg/dL, higher ... obstetrics #hepatitis #comparison ... #differential #
Differential Diagnosis for a Prolonged PT and aPTT
If the PT and the aPTT are both prolonged,
Differential Diagnosis ... thrombin inhibitors, heparin ... • Reduced liver ... • Massive hemorrhage ... #hematology #coagulation
Disseminated Intravascular Coagulation (DIC) Overview

Increased Clotting and Consumption of Clotting Factors

Findings:
 • Bleeding
 • Recent history
• Prolonged PT ... Acral cyanosis • Hemorrhagic ... Fibrinogen: ↓ • PT ... DIC • Severe Liver ... 100mg/dL) - Heparin
Appearance of Liver Lesions on Various Imaging Modalities
 • Computed Tomography (CT) - Arterial Phase, Portal
Appearance of Liver ... , Metastasis #Liver ... #Lesions #Hepatic ... POCUS #radiology #differential ... #diagnosis #comparison
Bleeding and Bruising - Disorders of Hemostasis - Differential Diagnosis Framework

== Quantitative or Qualitative defect in
of Hemostasis - Differential ... inhibitor of a coagulation ... Acquired: • Heparin ... intravascular coagulation ... Bruising #Hemostasis #Differential
Liver Chemistries - Interpretation of LFTs

R-value: Serum (ALT/ULN ALT) / (Alk phos/ULN ALP)
 • R >
Liver Chemistries ... • Albumin • Coagulation ... factors: PT/INR ... replaced by non-hepatic ... chemistry #diagnosis #differential
Purpura - Differential Diagnosis Framework

Non-blanchable, dark red to purple, hemorrhagic skin lesions that result from leakage
Purpura - Differential ... red to purple, hemorrhagic ... deficiency • Liver ... Cholesterol emboli • Septic ... Vasculopathy #Purpura #Differential
Postpartum Hemorrhage - Differential Diagnosis and Management 
Uterine Atony (80%) - Most PPH Will respond to
Postpartum Hemorrhage ... - Differential ... Oxytocin 40 IU in 1 liter ... CBC, fibrinogen, PT ... compression (using ultrasound
Appearance of Liver Lesions on Contrast Enhanced Ultrasound - Early arterial, Grayscale phase, Late arterial phase,
Appearance of Liver ... Contrast Enhanced Ultrasound ... #Lesions #Hepatic ... POCUS #radiology #differential ... #diagnosis #comparison