1
Q
Aptt stands for
A
Activated partial thromboplastin time
2
Q
What does aptt measure
A
It measures anticoag effect of heparin
3
Q
What is normal aptt without heparin
A
20-40 secs
4
Q
With heparin therapeutic aptt
A
1.5 -2.5 times of baseline or 45-70 secs
5
Q
How often is aptt tested
A
Every 6 hours
6
Q
What is pt and effected by what
A
Prothrombin time
Effected by warfarin
7
Q
What is inr
A
International normalized ratio
8
Q
What is inr used for
A
To standardize pt. Inr= pt pt over control pt
9
Q
What are inr goals
A
Mostly 2-3, mechanical valves 2.5-3.5
10
Q
Without warfarin inr
A
Inr=1
Anticoagulants
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