** Heart device maker HeartBeam Inc's BEAT.O shares surge
53.2% to $1.91
** Stock biggest pct. gainer across U.S. stock exchanges
** Shares will record their best day, if gains hold
** Co receives patent for its heart device, 12-lead
electrocardiogram (ECG) patch monitor, for detection of acute
coronary syndrome from United States Patent and Trademark Office
urn:newsml:reuters.com:*:nBw7xynqZa
** Co says the global ECG patch monitor market is estimated
to reach $4.8 bln by 2030
** Acute coronary syndrome is a condition resulting from the
sudden reduction of blood flow to the heart
** Including session gains, stock lost ~29% YTD
(Reporting by Khushi Mandowara)
((Khushi.Mandowara@thomsonreuters.com;))