AB019. 149. Timing of low molecular weight heparin administration in breast surgery and post-operative haematoma formation

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Background: In 2016 the American Society of Breast Surgeons generated thromboprophylaxis guidelines for breast surgery patients. There continues to be a paucity of guidelines pertaining to the optimum timing of venous thromboembolism (VTE) prophylaxis administration. Some studies have found enoxaparin to not increase haematoma rates (Pannucci et al., 2012) but others show contradictory increased risk (Lapid et al., 2012). Thus, further research is warranted to determine if pre- or post-operative administration of VTE prophylaxis effects post-operative haematoma rates.