25 results
How to Evaluate an Abnormal APTT
Step 1: Is the PT or APTT Artifactually Prolonged?
Step 2: Is
or APTT Artifactually ... or APTT? ... to identify the cause ... of Prolonged APTT ... mixing #studies #PTT
Causes of Prolonged PT (INR), Prolonged PTT
 • Prolonged PT (INR), Prolonged PTT
 • Prolonged PT
Causes of Prolonged ... PTT • Prolonged ... PTT, Normal PT ... • Prolonged PTT ... Diagnosis #Algorithm #Causes
Causes of Abnormal PT and/or aPTT
Prolonged Prothrombin Time (PT)
1. Acquired deficiency of FVII
PT and/or aPTT ... typically prolong aPTT ... may prolong the aPTT ... and aPTT 1. ... #aPTT #Prolonged
Von Willebrand Disease - Most common inherited bleeding disorder 
Clinical 
 • Easy bruising 
 •
Clinical • Easy bruising ... 2B) • Normal PT ... INR • Normal aPTT
Differential Diagnosis for a Prolonged PT and aPTT
If the PT and the aPTT are both prolonged,
and aPTT If the ... PT and the aPTT ... Causes include : ... Pre-analytical cause ... #aPTT #Prolonged
Disseminated Intravascular Coagulation (DIC) Overview

Increased Clotting and Consumption of Clotting Factors

Findings:
 • Bleeding
 • Recent history
/PTT • Low plasma ... /INR: ↑ • PTT: ... Treat primary cause ... INR < 2.3 - APTT ... Coagulation #diagnosis #causes
Bleeding and Bruising - Disorders of Hemostasis - Differential Diagnosis Framework

== Quantitative or Qualitative defect in
/NORMAL PTT: • ... /ABNORMAL PTT: ... Perform a PTT mixing ... and the PTT suggests ... discern these causes
Standardized Physical Abuse Guideline
<6 months of age
 • Social work consult
 • Skeletal survey
 • Head
appearance • CBC, PT ... , PTT if bruising
Causes of AKI in Pregnancy - Differential Diagnosis
Creatinine - Platelets - Transaminases - LDH - PT/PTT
Causes of AKI in ... Transaminases - LDH - PT ... /PTT - Schistocytes ... Differential #Diagnosis #Causes
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
Causes of Thrombocytopenia ... practices that could cause ... : INR/PT, aPTT(liver ... patients if the cause ... Differential #Diagnosis #Causes