• Runting Cai, Camilla Zimmermann, Monika Krzyzanowska, John Granton, and Breffni Hannon.
• 1 Department of Supportive Care, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada.
• Palliat Med. 2019 May 1; 33 (5): 486-499.

BackgroundPatients with advanced cancer have an elevated risk of venous thromboembolism. Increasingly, patients are admitted to palliative care settings for brief admissions, with greater numbers of discharges (vs deaths) reported internationally. There is limited guidance around the use of thromboprophylaxis or incidence of venous thromboembolism for these patients.AimThe aim of this study was to review the use of thromboprophylaxis as well as incidence of venous thromboembolism and bleeding in palliative care units or residential hospices for patients with advanced cancer.DesignA systematic review using Cochrane methods.Data SourcesMedline, Embase and the Cochrane Library were searched up to 28 September 2018 along with a grey literature search; the reference lists of selected papers were hand-searched. Inclusion criteria were original papers assessing thromboprophylaxis use in palliative care units or residential hospices for adult inpatients with cancer. Two reviewers independently selected and appraised papers using a tool designed for disparate data. Heterogeneity in study design made a meta-analysis not possible.ResultsA total of 11 full-text papers (9 quantitative and 2 qualitative) and 11 abstracts were included. Thromboprophylaxis use ranged between 4% and 53%; venous thromboembolism rates between 0.5% and 20%; and bleeding incidence was between 0.01% and 9.8%. Risk assessment tools were used infrequently and adherence to international thromboprophylaxis guidelines ranged between 5% and 71%. Physician opinions differed around the use of thromboprophylaxis; patients were largely accepting of thromboprophylaxis if it was offered.ConclusionThere is limited evidence around the optimal use of thromboprophylaxis for patients with advanced cancer admitted to palliative care settings. Although some patients may derive benefit, further research in this area is warranted.

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