European Heart Journal Advance Access originally published online on May 31, 2009
European Heart Journal 2009 30(15):1880-1884; doi:10.1093/eurheartj/ehp194
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Preparation for pacemaker or implantable cardiac defibrillator implants in patients with high risk of thrombo-embolic events: oral anticoagulation or bridging with intravenous heparin? A prospective randomized trial
1 Cardiology Department, Thorax Institute, Hospital Clinic, University of Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS)
2 Hemotherapy and Hemostasis Department, Villarroel 170, Barcelona 08036, Catalonia, Spain
Received 7 May 2008; revised 5 March 2009; accepted 28 April 2009; online publish-ahead-of-print 31 May 2009.
* Corresponding author. Tel: +34 932275551, Fax: +34 934513045, Email: lmont{at}clinic.ub.es
Aims: Current guidelines recommend stopping oral anticoagulation (OAC) and starting heparin infusion before implanting/replacing a pacemaker/implantable cardioverter-defibrillator (ICD) in patients with high risk for thrombo-embolic events. The aim of this study was to demonstrate that the maintenance of OAC during device implantation/replacement is as safe as bridging to intravenous heparin and shortens in-hospital stay.
Methods and results: A cohort of 101 consecutive patients with high risk for embolic events and indication for implant/replacement of a pacemaker/ICD were randomized to two anticoagulant strategies: bridging from OAC to heparin infusion (n = 51) vs. maintenance of OAC to reach an INR = 2 ± 0.3 at the day of the procedure (n = 50). Haemorrhagic and thrombo-embolic complications were evaluated at discharge, 15 and 45 days after the procedure. A total of 4/51 patients (7.8%) from heparin group and 4/50 (8.0%) from the OAC group developed pocket haematoma following the implant (P = 1.00). One haematoma in each group required evacuation (1.9 vs. 2%, P = 1.00). No other haemorrhagic events or embolic complications developed during the follow-up. Duration of the hospital stay was longer in the heparin group [median of 5 (4–7) vs. 2 (1–4) days; P < 0.001].
Conclusion: Implant of devices maintaining OAC is as safe as bridging to heparin infusion and allows a significant reduction of in-hospital stay.
Key Words: Pacemaker Mechanical prosthetic valve Atrial fibrillation Pocket haematoma Thrombo-embolism
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