Doctors test implant to block strokes
(AP)


<p><a href="http://us.rd.yahoo.com/dailynews/rss/health/*http://news.yahoo.com/s/ap/20061128/ap_on_he_me/stroke_blocker"><img src="http://d.yimg.com/us.yimg.com/p/ap/20061127/capt.0e54481f10f2409caa95d8b487075f8c.healthbeat_stroke_blocker_wx101.jpg?x=89&y=130&sig=iElmdnPG0GPTeXpj7SsQqA--" align="left" height="130" width="89" alt="Grace Holland, who received an experimental stroke-blocking device called the Watchman, is shown in her home in Shelby Township, Mich., Thursday, Nov. 23, 2006. (AP Photo/Paul Sancya)" border="0" /></a>AP - At least 120,000 Americans a year suffer strokes because of a common irregular heartbeat — one that's on the rise, hard to treat and can shoot deadly blood clots straight to the brain. Now doctors are experimenting with a new way to prevent those brain attacks: a tiny device that seals off a little section of the jiggling heart where the clots form.</p><br clear="all"/>