What is a potential consequence of a haemorrhagic stroke?

A haemorrhagic stroke occurs when a blood vessel in the brain ruptures, leading to bleeding into surrounding brain tissue. This bleeding can cause significant damage to the brain cells and can create pressure within the skull, leading to further complications. The immediate consequence of this type of stroke is the accumulation of blood, which disrupts normal brain function, potentially resulting in symptoms like paralysis, speech difficulties, and cognitive impairments.

The other options relate to different processes or conditions. Blockage of blood vessels is associated with ischemic strokes, which occur due to obstruction of blood flow, while an increase in oxygen levels and enhanced blood flow do not occur as a direct result of a haemorrhagic stroke. In fact, the bleeding typically reduces oxygen delivery to affected areas, exacerbating damage. Thus, bleeding into the brain is the critical and defining consequence of a haemorrhagic stroke.