Heart Beat: Hole in the heart
Heart Beat
Hole in the heart
All babies are born with a hole in the heart between the right atrium and the left. Although it usually closes within a year or so, in up to one-third of people a small opening remains into adulthood. This hole, called a patent foramen ovale, usually has no effect on heart function. It has been branded, though, as a cause of stroke in some young adults. Now there is new evidence that it could be responsible for some strokes in older people, too.
Writing in the Nov. 29, 2007, New England Journal of Medicine, German researchers showed that a patent foramen ovale was far more common in older people who had strokes of "unknown origin" than in those whose strokes could be traced to atrial fibrillation or other causes. A patent foramen ovale plus a ballooning of the wall between the right and left atria, called an atrial septal aneurysm, was even more problematic.
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