[Subarachnoid hemorrhage, part 2 : Treatment, complications and long-term sequelae].

Aneurysmal subarachnoid hemorrhage (SAH) is associated with a high morbidity and complex management. After the diagnosis, prompt exclusion of the ruptured aneurysm via endovascular or surgical techniques depending on morphology and location is essential. Complications such as delayed cerebral ischemia (DCI), hydrocephalus, vasospasms, seizures and systemic dysfunctions significantly impact the prognosis. Modern imaging procedures, particularly computed tomography (CT) perfusion, enable early detection of critical changes. Interdisciplinary treatment and structured follow-up care are decisive to minimize long-term neurological deficits and to improve the patients' quality of life.