How long a patient with a massive cerebral infarction lives depends on factors such as the severity of the condition and whether treatment is given in a timely manner. Some patients with brain herniation die within a week after the onset of the disease, while patients with well-controlled disease may survive for several years or even longer. Massive cerebral infarction is a disease with a high mortality and disability rate. Patients with this disease can die within a week after the cerebral infarction due to a sharp rise in intracranial pressure caused by severe cerebral edema, which in turn leads to brain herniation. If a patient with massive cerebral infarction recovers after treatment with dehydration to lower the cranial pressure and debridement and decompression, he or she may have a certain period of survival. If patients with massive cerebral infarction are treated with thrombolysis and thrombus removal at an early stage of the disease, they may have a better prognosis and survive for a long time. Patients with massive cerebral infarction are often left with severe limb movement disorder and need to stay in bed for a long period of time, which can cause complications such as lung infection, urinary tract infection, bedsores, etc. leading to death, which may occur within a few days if not well taken care of; if well taken care of, they may survive for several years. If you are diagnosed with massive cerebral infarction, please follow the doctor’s instructions for treatment.