Predisposing Factors for DVT: SICC PT

S urgery
I mmobilization
C ontraceptive pill
C oagulation defects, i.e. ALASCA (see below)

P regnancy
T rauma


ALASCA – DDx of Hypercoagulability Causes:

A PS, e.g. in SLE
L eiden factor V mutation
A PC resistance
S protein deficiency
C protein deficiency
A T III deficiency


Proteins C and S are
C lot
S toppers