Subarachnoid hemorrhage is a type of bleeding stroke which can lead to a delayed ischemic stroke after just a few days. Researchers have shown that massive electrochemical waves in the brain act as a marker announcing an impending ischemic stroke. Electrodiagnostic monitoring of these waves enables clinicians to identify the signs of an impending stroke early, particularly in comatose patients receiving intensive care following a subarachnoid hemorrhage.
