Summary
The post thrombotic syndrome (PTS) develops in 20–40% of deep venous thrombosis (DVT)
patients. Risk factors for PTS have not been well elucidated. Identification of risk
factors would facilitate individualised risk assessment for PTS. We conducted a systematic
review to determine whether biomarkers of fibrinolysis or endothelial dysfunction
can predict the risk for PTS among DVT patients. Studies were identified by searching
the electronic databases PubMed, EMBASE, Scopus and Web of science. We included studies
published between 1990 and 2013, measured biomarker levels in adult DVT patients,
and reported rates of PTS development. Fourteen studies were included: 11 investigated
the association between D-dimer and PTS; three examined fibrinogen; two measured von
Willebrand factor; one measured plasminogen activator inhibitor-1; one assessed ADAMTS-13
(A Disintegrin and Metalloprotease with Thrombospondin type 1 repeats) and one measured
factor XIII activity. Studies varied with regards to inclusion criteria, definition
of PTS, time point and method of biomarker measurement. We were unable to meta-analyse
results due to marked clinical heterogeneity. Descriptively, a significant association
with PTS was found for D-dimer in four studies and factor XIII in one study. Further
prospective research is needed to elucidate whether these markers might be useful
to predict PTS development.
Keywords
Post thrombotic syndrome - deep vein thrombosis - D-dimer - risk factors - fibrinolysis