10 results
Causes of Abnormal PT and/or aPTT
Prolonged Prothrombin Time (PT)
1. Acquired deficiency of FVII
Causes of Abnormal ... Pre-analytical cause ... intravascular coagulation (DIC ... Jcortesizaguirr #Abnormal ... #Causes #diagnosis
Visual Guide to AV Nodal Reentrant Tachycardia (AVNRT) - Pathophysiology
 - Dual AV nodal physiology is
Visual Guide to AV ... Nodal Reentrant ... - Normal conduction ... - In most case ... ECG usually shows
Differential Diagnosis for a Prolonged PT and aPTT
If the PT and the aPTT are both prolonged,
Prolonged PT and aPTT ... the PT and the aPTT ... Causes include : ... intravascularcoagulation (DIC ... amyloidosis #Abnormal
Disseminated Intravascular Coagulation (DIC) Overview

Increased Clotting and Consumption of Clotting Factors

Findings:
 • Bleeding
 • Recent history
Thrombocytopenia - Normal ... Treat primary cause ... INR < 2.3 - APTT ... < 1.5 x normal ... Coagulation #diagnosis #causes
Bleeding and Bruising - Disorders of Hemostasis - Differential Diagnosis Framework

== Quantitative or Qualitative defect in
PT/NORMAL PTT: ... PT/ABNORMAL PTT ... PT/NORMAL PTT: ... ABNORMAL PTT: Prolongation ... discern these causes
Causes of Post-Partum Hemorrhage - Differential Diagnosis Algorithm
Blood Loss: >500mL post vaginal delivery OR >1000 mL
Causes of Post-Partum ... Uterine fatigue (e.g ... succenturiate lobe • Abnormal ... intravascular coagulation (DIC ... Diagnosis #Algorithm #Causes
Hemophilia - Diagnosis and Management
Diagnosis:
 • Consistent bleeding history (unless screening for disease in family members
established disease) • aPTT ... mixing study (aPTT ... may be normal in ... mild cases) • ... hemophilia type (e.g
Cryofibrinogenemia Summary

Cryofibrinogenemia Epidemiology:
 • 40-70 years with a modest female predominance

Cryofibrinogenemia:
 • The precipitation of a
cooled from the normal ... cryoglobulin (CG ... cryoglobulins • Negative causes ... skin necrosis • DIC
Chagas Disease - American Trypanosomiasis - Diagnosis and Management Summary
Chagas disease (American trypanosomiasis) is an infectious
infectious disease caused ... PCR + 20-90%, normal ... ECG) → 70-80% ... (RBBB; others: AV
Causes of Purpura or Easy Bruising in Children

Platelet count reduced, i.e. thrombocytopenia
 - Increased platelet destruction
Causes of Purpura ... purpura - DIC ... infiltration (e.g ... Platelet count normal ... Purpura #Bruising #Causes