Platelet
Count in HIT
Every
other day
Frequency for
monitoring count:
First
indication may be:
Drop in platelet count following injection of heparin
Problem
with using platelet count:
30% of patients on heparin develop a benign thrombocytopenia –
type I HIT
Detection of HIT using platelet count:
Differentiating type I and type II HIT:
Type
I
Type
II
Feature
Drop in count
Time
from heparin
Small drop
1 – 3 days
>50% drop
>5 days
