Which of the following is listed as a subtype of hemorrhagic stroke?

• A. Subarachnoid hemorrhage
• B. Ischemic stroke
• C. Embolism
• D. Venous sinus thrombosis

Answer: (A)

Stroke types are categorized by whether bleeding or blockage causes the event. A hemorrhagic stroke occurs when a blood vessel in the brain bleeds, and subarachnoid hemorrhage is a specific subtype defined by bleeding into the space around the brain (the subarachnoid space), often from a ruptured aneurysm. This makes it a classic example of a hemorrhagic stroke subtype. The other options fit other concepts: ischemic stroke is caused by a blocked vessel (not bleeding); embolism is a mechanism that can cause an ischemic stroke; and venous sinus thrombosis is a distinct vascular condition that isn’t a standard hemorrhagic-stroke subtype.