ECG pitfall: anterior myocardial infarction in dextrocardia.

observed increased risk correlates with INR control. In summary, the findings of this large population-based study indicate that the initiation of warfarin is associated with an increased risk of ischaemic stroke. These results corroborate with those observed in post hoc analyses of two large trials of novel oral anticoagulants. While one hypothesis is that warfarin may induce a transient hypercoagulable state at the start of the treatment, additional wellconducted studies are needed to confirm these findings and determine whether a heparin bridging strategy at the initial phase of the treatment reduces this risk.