[Patent foramen ovale: is a change in the diagnostic paradigm necessary?].

The patent foramen ovale has been a well-known medical entity for a long time. With the advent of new diagnostic tools, the methodology for evaluating patients with stroke and suspected patent foramen ovale is evolving. In this article, we review the patent foramen ovale and the ultrasound methods used for its detection. Finally, we present a new paradigm for its study.