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Patients who need a heart valve replacement but are too ill for major surgery sometimes get a less invasive procedure that uses a catheter to replace the damaged valve.

However, as many as 10 percent of these patients experience a stroke as a complication.

A new study looks at whether a filter inserted into the blood vessel might help protect the brain from a stroke in these patients by removing debris that is dislodged during the procedure.

Catherine Dolf explains.


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