Summary
Graduated elastic compression stockings (GECS) are commonly used in the primary prevention
of deep vein thrombosis (DVT); however, their role in preventing recurrent DVT and
also post-thrombotic syndrome is less well established. The aim of this review was
to investigate the effect of GECS after DVT. A literature search was performed by
two independent searchers in order to identify randomised controlled trials on the
effect of GECS in preventing recurrent DVT and post-thrombotic syndrome. Four randomised
trials, including 537 patients, were identified. Two of the studies demonstrated that
below-knee GECS significantly reduced post-thrombotic syndrome during follow-up, while
a smaller study showed equivocal results. GECS reduced the incidence of post-thrombotic
syndrome from 54% to 25.2% [relative risk (RR) 0.47, 95% confidence interval (CI)
0.36-0.61] with the number needed to treat (NNT) being 4 (95% CI 2.7-5.0).The rate
of recurrent asymptomatic DVT was also significantly reduced by GECS (RR 0.20, 95%
CI 0.06-0.64; NNT 5); the reduction in symptomatic DVT was not significant (RR 0.79,
95% CI 0.50-1.26; NNT 34). In conclusion, there is level Ia evidence to suggest that
GECS can significantly reduce the incidence of post-thrombotic syndrome (PTS) after
DVT, and therefore these should be routinely prescribed. The evidence for recurrent
DVT is less conclusive. Further research is needed towards standardising PTS diagnostic
criteria and evaluating more effective preventive measures after DVT.
Keywords
Graduated elastic compression stockings - recurrent deep vein thrombosis - venous
thromboembolism - post-thrombotic syndrome - prevention