How long you can live with a large left hemisphere cerebral infarction is closely related to the severity of the cerebral infarction, whether the treatment is timely, and whether you are in good health. Some patients may not affect their life expectancy, while some may have life-threatening conditions. Cerebral infarction is an acute and serious disease belonging to neurology, which is acute and even life-threatening. When patients with large left hemisphere cerebral infarction are treated in time and are in good health, it may have less impact on life expectancy. If left hemisphere massive cerebral infarction is not treated in time or combined with underlying diseases such as heart disease and prolonged bed rest, it is also prone to complications such as serious lung infections and pressure ulcers, which can be life-threatening at any time. It is recommended that patients seek timely medical treatment under the guidance of doctors to prolong their life as much as possible.