Abstract:
BACKGROUND:There is a high risk of developing venous thromboembolism (VTE) following total knee arthroplasty (TKA). Conventional thromboprophylactic agents have limitations, such as route of administration, the need for monitoring, narrow therapeutic windows and interactions. Apixaban is a new oral anticoagulant with the potential to overcome these limitations. AIMS:To report the efficacy and safety of apixaban and low-molecular-weight heparin, enoxaparin, in VTE prophylaxis following TKA. METHODS:This single-centre, single-surgeon, retrospective analysis included 506 consecutive patients who underwent TKA between 2009 and 2015 and received enoxaparin or apixaban as thromboprophylaxis. Baseline characteristics of patients, in-hospital rates of VTE, total DVT, proximal or distal DVT, pulmonary embolism, bleeding outcomes and mortality were compared between the two groups. RESULTS:In-hospital VTE occurred in 22 (8.9%) patients in the enoxaparin group and 11 (4.5%) patients in the apixaban group (P = 0.049). Nine (3.6%) patients in the enoxaparin group and one (0.4%) in the apixaban group experienced a postoperative drop in haemoglobin ≥20 g/L that either necessitated transfusion of ≥2 units blood, caused haemodynamic instability or both (P = 0.020). Thirty-five patients experienced other bleeding events, with 25 (9.9%) in the enoxaparin group and 10 (4.0%) in the apixaban group (P = 0.009). There were no statistically significant differences in rates of total DVT, proximal or distal DVT, pulmonary embolism or mortality between the groups. CONCLUSIONS:Compared with enoxaparin, thromboprophylaxis with apixaban resulted in a lower VTE incidence and fewer haemorrhagic complications.
journal_name
Intern Med Jjournal_title
Internal medicine journalauthors
King DA,Pow RE,Dickison DM,Vale PRdoi
10.1111/imj.13139subject
Has Abstractpub_date
2016-09-01 00:00:00pages
1030-7issue
9eissn
1444-0903issn
1445-5994journal_volume
46pub_type
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