Stroke & Cerebrovascular Disorders

 

In a stroke, the brain suddenly stops functioning properly due to either low blood flow or bleeding in the brain.  Low-blood-flow strokes are called “ischemic” (iss-KEE-mick) strokes, are usually caused by blockage of a brain artery by a blood clot, and are the most common type of stroke.  Ischemic strokes are emergencies.  If treated quickly enough with blood-clot breaker medicine (tPA) and/or catheters that pull clots out of brain arteries (clot-retrieval devices), it is possible to reverse much of the devastating effect of an ischemic stroke.  Ischemic stroke patients are best cared for in an Acute Stroke Unit or Neurosciences Intensive Care Unit.  Bleeding strokes are called “hemorrhagic” strokes.  There are two types of hemorrhagic strokes, “intracerebral hemorrhage” in which bleeding occurs inside the brain and “subarachnoid hemorrhage” in which the bleeding occurs around the brain (between the brain and the skull).  Intracerebral hemorrhage is usually due to rupture of a small brain artery damaged after many years of high blood pressure.  Intracerebral hemorrhage patients are best cared for in an Acute Stroke Unit or Neurosciences Intensive Care Unit. Subarachnoid hemorrhage is usually due to rupture of a weak outpouching in a brain artery called an aneurysm.  Aneurysmal rupture is an emergency and requires one of two invasive procedures to stop the bleeding—either clipping of the aneurysm by a neurosurgeon or obliteration of the aneurysm by a neurointerventional procedure (coiling or special stent).  Patients with aneurysmal subarachnoid hemorrhage are best cared for in a Neurosciences Intensive Care Unit after treatment of the aneurysm.  Cerebrovascular disorders are conditions in which the blood vessels of the brain are abnormal, damaged, or do not function properly and include stroke, vascular malformations, cerebral vein thrombosis, and other conditions.

Faculty

David Lee Gordon, MD
Gabriela Purcarin, MD
Meheroz H. Rabadi, MD
Evgeny V. Sidorov, MD, PhD 
OU Physicians
OU Children's Physicians
VAMC
OU Physicians