Hello, I need help answering this case study. Case study instructions below

 Stroke is acute focal neurologic deficit from a vascular disorder that injures brain tissue. Stroke is a leading cause of mortality and morbidity in the United States. The term ‘brain attack’ has been promoted to raise awareness that time-dependent tissue damage in the brain occurs, and that rapid emergency treatment is necessary, similar to that with heart attack. You may see this term in your research of current literature.

1. Explain the two main types of stroke.
   • Discuss the etiology and pathogenesis of each type of stroke
   • Discuss the clinical manifestations and the risk factors of each type of stroke
   • Discuss the reasoning and rationales of why the timely diagnosis and treatment of stroke is imperative
   • Which diagnostic tests would determine each type of stroke? Please explain.
   • Discuss the treatment goals of stroke and stroke care
   • What are the indications for the administration of intravenous tissue plasminogen activator (tPA)? Explain.
2. A 62-year-old female presented to the Emergency Department with a 2-hour history of right-sided arm weakness and aphasia. The CT scan of the brain that was done STAT upon admission is negative and does not indicate any brain injury.
   1. Based on the patient’s clinical manifestations which cerebral artery is involved and where in the brain is the pathology located?
   2. Since the patient’s initial CT scan was negative what further testing would be required to determine the patient’s diagnosis?