43 results
How to Evaluate an Abnormal APTT
Step 1: Is the PT or APTT Artifactually Prolonged?
Step 2: Is
Step 1: Is the PT ... Heparin, or Direct Thrombin ... Prolonging the PT ... #prolonged #diagnosis ... mixing #studies #PTT
Approach to Elevated aPTT / PT - Differential Diagnosis Algorithm

aPTT: Intrinsic / Final
PT: Extrinsic / Final

By
Approach to Elevated aPTT ... / PT - Differential ... aPTT: Intrinsic ... #Elevated #aPTT ... #PT #INR #Algorithm
Causes of Prolonged PT (INR), Prolonged PTT
 • Prolonged PT (INR), Prolonged PTT
 • Prolonged PT
INR), Prolonged PTT ... INR), Prolonged PTT ... (INR), Normal PTT ... • Prolonged PTT ... #Diagnosis #Algorithm
Coagulation Cascade Mnemonic - PITT vs PET
PITT (with an I) = Intrinsic = APTT
vs PET PITT (with ... an I) = Intrinsic ... = APTT Factors ... E)= Extrinsic=PT ... #PET #diagnosis
Algorithm for Investigation of Abnormal Coagulation Tests
- Prolonged PT
- Prolonged aPTT and Prolonged PT
- Prolonged aPTT

Dr.
Tests - Prolonged PT ... - Prolonged aPTT ... and Prolonged PT ... - Prolonged aPTT ... Laboratory #Hematology #Diagnosis
This 24M presented with acute onset CP/SOB, hypoxia, HR 150s. What's the diagnosis? Treatment options? Hint:
What's the diagnosis ... Thrombus in transit ... Pt had extensive ... Echocardiogram #A4C ... #Clots #InTransit
Causes of Abnormal PT and/or aPTT
Prolonged Prothrombin Time (PT)
1. Acquired deficiency of FVII
Causes of Abnormal PT ... Prothrombin Time (PT ... Congenital intrinsic ... drugs e.g. direct thrombin ... #Causes #diagnosis
Coagulation cascade and anticoagulants 

Satyendra Dhar MD, @DharSaty

#coagulation #coumadin #heparin #warfarin #apaxiban #pradaxa #xarelto #DOAC #vWF
xarelto #DOAC #vWF #thrombin ... #ptt #pt
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 ... #Abnormal #PT ... #aPTT #Prolonged
Prothrombin Time (PT) and Partial Thromboplastin Time (PTT)

Prothrombin Time (PT) - Often Elevated in:
 • Vitamin
Prothrombin Time (PT ... Thromboplastin Time (PTT ... Prothrombin Time (PT ... thematttsai #PT ... #PTT #Prothrombin