3-rx.comCustomer Support
3-rx.com
   
HomeAbout UsFAQContactHelp
News Center
Health Centers
Medical Encyclopedia
Drugs & Medications
Diseases & Conditions
Medical Symptoms
Med. Tests & Exams
Surgery & Procedures
Injuries & Wounds
Diet & Nutrition
Special Topics



\"$alt_text\"');"); } else { echo"\"$alt_text\""; } ?>


Join our Mailing List





Syndicate

You are here : 3-RX.com > Home > Stroke -

Stenting of the carotid artery significantly improves cognitive speed

StrokeNov 29, 05

Stenting of the carotid artery significantly improves cognitive speed and may improve memory function in some patients, according to research presented at the annual meeting of the Radiological Society of North America (RSNA).

“To my knowledge this is the first study combining neuropsychological testing and perfusion imaging that screens for silent ischemic stroke events that can occur during stenting,” said Iris Q. Grunwald, M.D., consultant at Saarland University Clinic in Homburg, Germany.

Stroke is the third leading cause of death in the United States. Every year, approximately 600,000 Americans experience a stroke, one-quarter of which are caused by carotid arterial occlusive disease, or a narrowing of the carotid arteries. Until recently, surgery was the standard treatment for this disease, but carotid artery stenting has emerged as an accepted minimally invasive alternative to restore blood flow to the brain.

To perform the procedure, an interventional radiologist inserts a long catheter into a tiny incision in the common femoral artery in the leg. Using an image-guidance system such as computed tomography (CT) and a guide wire, the radiologist positions the sheath at the site of the narrowing, or stenosis, in the carotid artery, expands the artery with a balloon and inserts a stent to hold the artery open.

While stenting is known to be an effective treatment for stroke prevention, little is known on the treatment’s effects on cognitive function.

Dr. Grunwald and colleagues performed carotid artery stenting on 26 patients. All were given neuropsychological tests at least 24 hours before and three months after the stenting procedure. These tests included tests for cognitive speed (how quickly the brain processes information) and memory function. Patients were also tested for dementia and depression. The researchers examined the patients with diffusion- and perfusion-weighted magnetic resonance imaging (MRI) before and after stenting.

The results showed that cognitive speed increased significantly after stenting, regardless of the patient’s age or the severity of the stenosis. In addition, the researchers found a correlation between the degree of vessel stenosis and perfusion deficit, or decreased blood flow, in the brain area on the side of the stenosis. Increasing the blood flow by stenting resulted in an increase in memory function in patients with perfusion deficit.

“Stenting is a safe way to treat carotid artery stenosis,” Dr. Grunwald said. “In addition, stenting of the carotid artery may offer more than reduced stroke risk, especially to patients with impaired brain perfusion.”

http://www.rsna.org/



Print Version
Tell-a-Friend
comments powered by Disqus

RELATED ARTICLES:
  Aspirin cuts risk of clots, DVT by a third - new study
  ADHD drugs not linked to increased stroke risk among children
  Surgical procedure appears to improve outcomes after bleeding stroke
  Disappearing bacterium may protect against stroke
  Kirk leaves rehab center
  Singing after stroke? Why rhythm and formulaic phrases may be more important than melody
  Stroke centers no worse at weekend treatment
  Regional differences in the care of acute stroke patients
  Scripps Research scientists find way to block stress-related cell death
  Treating mild strokes with clot-busting drug could save $200 million annually, study shows
  Hope for stroke victims
  Most Medicare stroke patients rehospitalized or dead within year

 












Home | About Us | FAQ | Contact | Advertising Policy | Privacy Policy | Bookmark Site