[Effectiveness and safety of non-pharmacological interventions for the prevention of venous thromboembolism in stroke patients: an overview of systematic reviews].

Introduction: Half of the deaths recorded in non-surgical patients attributable to venous thromboembolism (VTE) affect those with stroke. The uncertain benefit of anticoagulant therapy has increased interest in non-pharmacological intervention to prevent VTE.

Aim: To evaluate the efficacy and safety of non-pharmacological interventions to prevent VTE in stroke patients.

Methods: Overview of systematic reviews with retrieval of documents in compliance with the PICOS Framework and through a research strategy implemented on 4 April 2019 in six biomedical databases and in the PROSPERO registry. The tools used to assess the methodological quality and the risk of bias were the AMSTAR checklist and the ROBIS tool, respectively. The results have been synthesized with narrative modality.

Results: Seven systematic reviews of different methodological quality and risk of bias met the inclusion criteria. The non-pharmacological interventions of prophylaxis used are graduated compression stockings (GCS) and intermittent pneumatic compression devices (IPCD). The first has no effect on VTE and has important side effects, the second is promising in reducing mortality from all causes and decreases the incidence of deep vein thrombosis.

Discussion: The use of IPCD, despite the efficacy observed, should be reserved, after a risk assessment of VTE and a subgroup analysis, for patients who can derive the maximum benefit from the intervention.

Conclusions: In stroke patients the use of GCS to prevent VTE is not recommended because it is not superior to standard care and can cause damage. IPCD as a intervention of prophylaxis appears to be effective but further confirmation is needed from future studies.