15 results
How to Evaluate an Abnormal APTT
Step 1: Is the PT or APTT Artifactually Prolonged?
Step 2: Is
to Evaluate an Abnormal ... the PT or APTT ... Prolonging the PT ... to identify the cause ... #diagnosis #hematology
Causes of Prolonged PT (INR), Prolonged PTT
 • Prolonged PT (INR), Prolonged PTT
 • Prolonged PT
PTT • Prolonged ... PT (INR), Normal ... PTT, Normal PT ... , Normal PT (INR ... #Diagnosis #Algorithm
Disseminated Intravascular Coagulation (DIC) Overview

Increased Clotting and Consumption of Clotting Factors

Findings:
 • Bleeding
 • Recent history
• Prolonged PT ... /PTT • Low plasma ... Fibrinogen: ↓ • PT ... /INR: ↑ • PTT: ... INR < 2.3 - APTT
Causes of Abnormal PT and/or aPTT
Prolonged Prothrombin Time (PT)
1. Acquired deficiency of FVII
Causes of Abnormal ... PT and/or aPTT ... Prothrombin Time (PT ... #PT #aPTT #Prolonged ... #Causes #diagnosis
Differential Diagnosis for a Prolonged PT and aPTT
If the PT and the aPTT are both prolonged,
for a Prolonged PT ... and aPTT If the ... PT and the aPTT ... #PT #aPTT #Prolonged ... #Causes #diagnosis
Bleeding and Bruising - Disorders of Hemostasis - Differential Diagnosis Framework

== Quantitative or Qualitative defect in
PT/NORMAL PTT: ... PT/ABNORMAL PTT ... PT/NORMAL PTT: ... ABNORMAL PT/ ... ABNORMAL PTT: Prolongation
Approach to Thrombotic Microangiopathy (TMA) - Differential Diagnosis and Management Algorithm

Suspected TMA: Unexplained thrombocytopenia + MAHA
and Management ... antiglobulin test, PT ... /aPTT MAHA likely ... hemosiderin • PT ... /aPTT normal
ISTH Scoring System for Disseminated Intravascular Coagulation (DIC)
Platelet count:
 • Expected: Low (or normal)
 • Elevation
Intravascular Coagulation (DIC ... platelet aggregation PT ... , aPTT: • Expected ... using INR use PT ... ISTH #Scoring #diagnosis
Hemophilia - Diagnosis and Management
Diagnosis:
 • Consistent bleeding history (unless screening for disease in family members
and Management ... established disease) • aPTT ... mixing study (aPTT ... mild cases) • ... PT/INR & von Willebrand
Ketosis Disorders
Ketone bodies are a normal metabolic energy source. Excessive unregulated production of ketones, often accompanied
IVF or PO): The pt ... ketoacidosis (DKA) - caused ... Glucosuria causes ... #differential #diagnosis ... #management #endocrinology