Background: The FinPAC trial showed that the strategy of uninterrupted oral anticoagulation (OAC) was non-inferior to interrupted OAC for the primary outcome of bleeding and thromboembolic complications in patients undergoing cardiac rhythm management device (CRMD) implantation.

Methods: We conducted a post hoc analysis of the FinPAC data to explore the incidence and predictors of significant (> 100 cm(2)) pocket hematoma after CRMD implantation among the study population (n = 447). A total of 213 patients were on OAC, 128 were on aspirin, and 106 on no antithrombotic therapy.

Results: The incidence of significant pocket hematoma during hospital stay was significantly higher among patients using OAC (5.6%) and aspirin (5.5%) than in those with no antithrombotic medications (0.9%), but only one patient (0.8%) in the aspirin group needed revision of hematoma. Two patients (0.9%) in the OAC group and one (0.8%) in the aspirin group needed blood products. In multivariable regression analysis, no pre- procedural features predicted the significant hematoma in any of the groups.

Conclusions: Clinically significant pocket hematoma is a rare complication after CRMD implantation in patients with ongoing therapeutic OAC. The incidence of significant pocket hematoma formation is similar in patients using OAC and those using aspirin.

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http://dx.doi.org/10.3109/07853890.2014.894285DOI Listing

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