Clot-busting drugs are the main treatment for stroke, but they have often not been recommended for people who have an aneurysm in their brains that has not ruptured. An aneurysm is a bulge in the wall of a blood vessel in the brain. A new study finds that these aneurysms rarely burst after treatment with clot-busting drugs, so the drugs may be safe for use. The study is published in the October 6, 2021, online issue of Neurology.