Final answer:
The most common cause of morbidity and mortality with a SAH is a hemorrhagic stroke, which occurs when there is bleeding into the space between the brain and the tissues that cover it.
Step-by-step explanation:
The most common cause of morbidity and mortality with a SAH is a hemorrhagic stroke.
A SAH, or subarachnoid hemorrhage, occurs when there is bleeding into the space between the brain and the tissues that cover it. This bleeding can be caused by a ruptured blood vessel in the brain, which can lead to a lack of blood flow to parts of the brain and the death of brain cells.
Hemorrhagic strokes are more likely to be fatal than ischemic strokes, which are caused by a blocked blood vessel in the brain.