Patent foramen ovale (PFO) closure reduced the risk for recurrent ischemic stroke in most young and middle-aged adults with cryptogenic stroke but increased the risk for atrial fibrillation (AF) in a ...

Both traditional and less conventional risk factors contribute strongly to the risk of cryptogenic ischemic stroke in adults younger than 50 years, but their relative importance varies by the presence ...

The Nature Index 2024 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

In the womb, fetuses have an opening in the upper chambers of the heart known as a foramen ovale. While the opening is supposed to close naturally after birth, for many it never does. That's when it's ...