38 results
Causes of Abnormal PT and/or aPTT
Prolonged Prothrombin Time (PT)
1. Acquired deficiency of FVII
Abnormal PT and/or aPTT ... typically prolong aPTT ... may prolong the aPTT ... Prolonged PT and aPTT ... #Abnormal #PT #aPTT
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 ... , FVII, FIX, FX ... , FVII, FIX, FX) ... #Abnormal #PT #aPTT
Algorithm for Investigation of Abnormal Coagulation Tests
- Prolonged PT
- Prolonged aPTT and Prolonged PT
- Prolonged aPTT

Dr.
Algorithm for Investigation ... PT - Prolonged aPTT ... PT - Prolonged aPTT ... DrEricStrong #Algorithm ... #Laboratory #Hematology
Prothrombin Time (PT) and Partial Thromboplastin Time (PTT)

Prothrombin Time (PT) - Often Elevated in:
 • Vitamin
Thromboplastin Time (PTT ... warfarin) • Factor VII ... Thromboplastin Time (PTT ... thematttsai #PT #PTT ... Thromboplastin #laboratory
Approach to Elevated aPTT / PT - Differential Diagnosis Algorithm

aPTT: Intrinsic / Final
PT: Extrinsic / Final

By
Approach to Elevated aPTT ... Differential Diagnosis Algorithm ... aPTT: Intrinsic ... #Elevated #aPTT ... #PT #INR #Algorithm
Effect of Anticoagulants on Coagulation Tests
PT / INR, aPTT, Anti-Xa Activity, Activated Clotting Time, Thrombin Time,
Tests PT / INR, aPTT ... Testing #Diagnosis #Laboratory
Prolonged APTT - Diagnostic Algorithm

#Prolonged #APTT #PTT #abnormal #Diagnosis #Algorithm #hematology
Prolonged APTT - ... Diagnostic Algorithm ... #Prolonged #APTT ... #PTT #abnormal ... #Diagnosis #Algorithm
Approach to Thrombotic Microangiopathy (TMA) - Differential Diagnosis and Management Algorithm

Suspected TMA: Unexplained thrombocytopenia + MAHA
and Management Algorithm ... antiglobulin test, PT/aPTT ... hemosiderin • PT/aPTT ... Diagnosis #Management #Algorithm
Syphilis Traditional vs Reverse-Sequence Screening Algorithms

#Syphilis #ReverseSequence #Screening #Algorithm #Diagnosis #Laboratory #Testing
Reverse-Sequence Screening Algorithms ... ReverseSequence #Screening #Algorithm ... #Diagnosis #Laboratory
Disseminated Intravascular Coagulation (DIC) Overview

Increased Clotting and Consumption of Clotting Factors

Findings:
 • Bleeding
 • Recent history
• Prolonged PT/PTT ... levels of factors VII ... venipuncture sites Laboratory ... PT/INR: ↑ • PTT ... INR < 2.3 - APTT