A new study examines the link between cardiac surgery and migraines with visual auras, which have been found to increase the risk of stroke. (Image credit: KATERYNA KON/SCIENCE PHOTO LIBRARY via Getty Images)
Some patients who have undergone major heart surgery develop migraines with visual auras, which are temporary disturbances in visual perception such as glowing lights and zig-zagging lines. The cause of this unusual complication has long been unknown, but new research suggests that blood clots in the brain may be the cause.
“Previously, it was thought that these [clots] did not cause any symptoms and had no obvious negative consequences,” study co-author Dr. Gregory Marcus, a cardiologist at the University of California, San Francisco, told Live Science in an email.
A new study published July 7 in the journal Heart Rhythm offers a fresh hypothesis about the causes of these mysterious migraines.
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Sourse: www.livescience.com
