Approach to Bleeding Flashcards
1
Q
What blood test is this describing?
Measuring extrinsic coagulation system, expressed as a ratio to normal (INR).
A
Prothrombin time (PT)
2
Q
What can prolong the prothrombin time?
A
Warfarin, vitamin K deficiency, liver disease, DIC.
3
Q
What blood test is this describing?
Measuring intrinsic coagulation system, normal range 35-45.
A
Activated partial thromboplastin time (aPTT).
4
Q
What prolongs the activated partial thromboplastin time?
A
Heparin, haemophilia, DIC, liver disease.
5
Q
What is the normal range of thrombin time and what can prolong it?
A
- 10-15
2. Heparin, DIC
6
Q
What blood test is this describing?
Fibrin degradation product, occurs during DIC and VTE. May be raised in inflammation, infection, or malignancy.
A
D-dimer
