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RI Hospital: Near-complete blood flow restoration critical for best outcomes in stroke
Date:10/31/2012

PROVIDENCE, R.I. Two Rhode Island Hospital researchers recently found that restoring near-complete blood flow to the brain is necessary to restore or preserve neurological function following stroke. Seems like a no-brainer, right?

Yet until their research was complete, many physicians and researchers believed that partial blood-flow restoration was good enough. Not anymore.

The study by Mahesh Jayaraman, M.D., director of interventional neuroradiology, and Brian Silver, M.D., director of the Comprehensive Stroke Center at Rhode Island Hospital, is published online in advance of print in the American Journal of Neuroradiology.

The researchers found that when performing intra-arterial stroke therapy putting a catheter directly into a blood vessel in the brain in an effort to open it it's simply not enough to open some of the vessels. Rather, opening the vast majority of the vessels is needed to truly restore neurological function in patients with acute ischemic stroke who are ineligible for, or fail to improve following intravenous tissue plasminogen activator (tPA), a common treatment for stroke.

"Stroke caused by a large blockage in the brain is potentially debilitating," Jayaraman said. "But if we can successfully restore blood flow to the majority of the blood vessels in the brain, then we may be able to help reduce the severity of a patient's stroke. While previous studies have shown that any restoration of blood flow can help, our results are the first to show that near-complete restoration is needed to help improve patient outcomes, including the preservation of fine and gross motor skills, speech and behavior."

The purpose of the study was to determine whether the degree of restoration of blood flow to the brain has an impact on the degree of brain damage and clinical outcomes. The study found that there are, in fact, significant differences in clinical outcomes between partial and near-complete b
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Contact: Ellen Slingsby
eslingsby@lifespan.org
401-444-6421
Lifespan
Source:Eurekalert

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