Answer to Question 1
An ischemic stroke occurs when an obstruction clogs a blood vessel and prevents oxygen and other nutrients from reaching part of the brain. A hemorrhagic stroke occurs when a weakened blood vessel breaks, such as the rupture of an aneurysm.
Risk factors include long-term high blood pressure, family history, African American, Asian, and Hispanic ethnicity, physical inactivity, cigarette smoking, comorbid conditions, living in poverty, excessive use of alcohol, and use of cocaine and illicit intravenous drugs.
Answer to Question 2
a